* [Bug 220027] USB 3.2 capture cards using incorrect USB speed
2025-04-17 18:26 [Bug 220027] New: USB 3.2 capture cards using incorrect USB speed bugzilla-daemon
@ 2025-04-18 1:07 ` bugzilla-daemon
2025-04-26 8:39 ` bugzilla-daemon
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From: bugzilla-daemon @ 2025-04-18 1:07 UTC (permalink / raw)
To: linux-usb
https://bugzilla.kernel.org/show_bug.cgi?id=220027
--- Comment #1 from Niko (nrkowalski@gmail.com) ---
I decided to try the 6.14.0-15 Kernel and I'm still having the same issue, but
getting some more information from dmesg.
[ 847.836967] usb 8-1: new SuperSpeed Plus Gen 2x1 USB device number 3 using
xhci_hcd
[ 853.084344] usb 8-1: unable to get BOS descriptor or descriptor too short
[ 853.110389] usb 8-1: unable to read config index 0 descriptor/start: -71
[ 853.110406] usb 8-1: can't read configurations, error -71
[ 853.293248] usb 8-1: new SuperSpeed USB device number 4 using xhci_hcd
[ 853.372723] usb 8-1: LPM exit latency is zeroed, disabling LPM.
[ 853.624234] usb 8-1: New USB device found, idVendor=0fd9, idProduct=009c,
bcdDevice= 0.02
[ 853.624252] usb 8-1: New USB device strings: Mfr=6, Product=7,
SerialNumber=3
[ 853.624259] usb 8-1: Product: Elgato 4K X
[ 853.624265] usb 8-1: Manufacturer: Elgato
[ 853.624271] usb 8-1: SerialNumber: A7SNB504228NRE
[ 853.690719] uvcvideo 8-1:1.1: Unknown video format
30313050-0000-0010-8000-00aa00389b71
[ 853.690749] usb 8-1: Found UVC 1.00 device Elgato 4K X (0fd9:009c)
[ 853.856379] usb 8-1: 3:2: failed to get current value for ch 0 (-22)
[ 854.820221] retire_capture_urb: 15 callbacks suppressed
[ 854.836455] usb 8-1: cannot submit urb (err = -19)
[ 854.837512] usb 8-1: cannot submit urb 0, error -19: no device
[ 855.165030] usb 8-1: reset SuperSpeed USB device number 4 using xhci_hcd
[ 855.236908] usb 8-1: LPM exit latency is zeroed, disabling LPM.
[ 855.322103] uvcvideo 8-1:1.1: Unknown video format
30313050-0000-0010-8000-00aa00389b71
[ 855.322126] usb 8-1: Found UVC 1.00 device Elgato 4K X (0fd9:009c)
[ 855.407009] usb 8-1: 3:2: failed to get current value for ch 0 (-22)
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^ permalink raw reply [flat|nested] 13+ messages in thread* [Bug 220027] USB 3.2 capture cards using incorrect USB speed
2025-04-17 18:26 [Bug 220027] New: USB 3.2 capture cards using incorrect USB speed bugzilla-daemon
2025-04-18 1:07 ` [Bug 220027] " bugzilla-daemon
@ 2025-04-26 8:39 ` bugzilla-daemon
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From: bugzilla-daemon @ 2025-04-26 8:39 UTC (permalink / raw)
To: linux-usb
https://bugzilla.kernel.org/show_bug.cgi?id=220027
Michał Pecio (michal.pecio@gmail.com) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |michal.pecio@gmail.com
--- Comment #2 from Michał Pecio (michal.pecio@gmail.com) ---
This is similar to that other case: the device comes up at Gen 2 speed, then
fails to return descriptors (5 seconds between messages, looks like a timeout),
then connects at Gen 1 speed and works normally.
Do you have other 10Gbps devices to check if they work in the same USB port?
Is this problem reproducible on other types of USB controllers? The other bug
mentioned an ASMedia controller, those things sometimes have problems which
aren't seen anywhere else...
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^ permalink raw reply [flat|nested] 13+ messages in thread* [Bug 220027] USB 3.2 capture cards using incorrect USB speed
2025-04-17 18:26 [Bug 220027] New: USB 3.2 capture cards using incorrect USB speed bugzilla-daemon
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From: bugzilla-daemon @ 2025-04-26 16:15 UTC (permalink / raw)
To: linux-usb
https://bugzilla.kernel.org/show_bug.cgi?id=220027
--- Comment #3 from Niko (nrkowalski@gmail.com) ---
The only other 10Gbps device I have at the moment is a USB hub which is
properly detected as a SuperSpeed Plus device.
I have 3 PCs to test with 2x AMD and 1x Intel and all 3 exhibit the same
behavior in Linux Mint 21. I've confirmed the capture card does work at the
correct speed in Windows 11 using the same USB port, with the same cable.
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From: bugzilla-daemon @ 2025-04-27 23:27 UTC (permalink / raw)
To: linux-usb
https://bugzilla.kernel.org/show_bug.cgi?id=220027
--- Comment #4 from Niko (nrkowalski@gmail.com) ---
I did pick up a NVMe with USB 3.2 adapter and have confirmed that it is
properly detected and operating at the 10Gbps SuperSpeed Plus speeds.
[3323020.361533] usb 4-2.3: new SuperSpeed Plus Gen 2x1 USB device number 9
using xhci_hcd
[3323020.373970] usb 4-2.3: New USB device found, idVendor=152d,
idProduct=0562, bcdDevice= 2.14
[3323020.373975] usb 4-2.3: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[3323020.373978] usb 4-2.3: Product: External
[3323020.373981] usb 4-2.3: Manufacturer: JMicron
[3323020.373983] usb 4-2.3: SerialNumber: DD564198842A6
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M
|__ Port 2: Dev 4, If 0, Class=Hub, Driver=hub/4p, 10000M
|__ Port 3: Dev 9, If 0, Class=Mass Storage, Driver=uas, 10000M
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2025-04-17 18:26 [Bug 220027] New: USB 3.2 capture cards using incorrect USB speed bugzilla-daemon
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From: bugzilla-daemon @ 2025-04-30 6:35 UTC (permalink / raw)
To: linux-usb
https://bugzilla.kernel.org/show_bug.cgi?id=220027
--- Comment #5 from Michał Pecio (michal.pecio@gmail.com) ---
Looks like a problem with those capture devices, then. Maybe they all use the
same chip? One name I have seen somewhere is Realtek RTD2801VPF.
It could be what Mathias Nyman suggested in the other bug: the device expects
some particular order of descriptor requests (as issued by Windows) and doesn't
know what to do when Linux does similar things in other order. It would be a
little weird that such a bug only occurs at 10G speed, but hardware can be all
sorts of buggy...
To test this theory it would be necessary to patch the kernel and observe what
happens. Can you build the kernel from source, are you familiar with C
programming by any chance?
Another possible approach is to sniff the USB bus with Wireshark on Windows and
on Linux and compare. Disclaimer: I have never really used Wireshark on Windows
before, so IDK how usable it is, and any changes to Linux behavior would still
require kernel patches of course.
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^ permalink raw reply [flat|nested] 13+ messages in thread* [Bug 220027] USB 3.2 capture cards using incorrect USB speed
2025-04-17 18:26 [Bug 220027] New: USB 3.2 capture cards using incorrect USB speed bugzilla-daemon
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From: bugzilla-daemon @ 2025-04-30 19:54 UTC (permalink / raw)
To: linux-usb
https://bugzilla.kernel.org/show_bug.cgi?id=220027
--- Comment #6 from Niko (nrkowalski@gmail.com) ---
Its been awhile since I've built a Kernel but I'm sure I can do it, I am
familiar with C.
I can also do a packet capture with Wireshark. I'm not really familiar with how
USB communication works, but can share the captures.
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From: bugzilla-daemon @ 2025-05-02 9:41 UTC (permalink / raw)
To: linux-usb
https://bugzilla.kernel.org/show_bug.cgi?id=220027
--- Comment #7 from Michał Pecio (michal.pecio@gmail.com) ---
Created attachment 308070
--> https://bugzilla.kernel.org/attachment.cgi?id=308070&action=edit
don't fetch BOS descriptors from devices
Maybe something like this patch, then?
Your device seems to hang when asked for this descriptor, so don't ask it and
see what happens. I tried it on my own 5Gbps UVC device and it still works,
though many other things break without BOS and hence the patch checks for
vendor ID. You will need to edit it with the ID of your device. The patch also
prints IDs of new devices to a) confirm that the earlier device descriptor
request was successful and b) help with adjusting the patch if 10Gbps vendor ID
is different from 5Gbps vendor ID.
It should now look like this:
[89023.940009] usb 19-2.3: new SuperSpeed USB device number 8 using xhci_hcd
[89023.954100] usb 19-2.3: new device idVendor ac8 idProduct 3420
[89023.954115] usb 19-2.3: too lazy to get BOS descriptor or descriptor too
short
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https://bugzilla.kernel.org/show_bug.cgi?id=220027
--- Comment #8 from Niko (nrkowalski@gmail.com) ---
That fixed it!!
Though only when using the USB3.2 ports.
[ 251.355286] usb 2-1.2: new SuperSpeed Plus Gen 2x1 USB device number 3 using
xhci_hcd
[ 251.410801] usb 2-1.2: new device idVendor 0fd9 idProduct 009b ( I adjusted
the format specifier for readability, to always be 2 bytes long ).
[ 251.410817] usb 2-1.2: too lazy to get BOS descriptor or descriptor too
short
[ 251.610011] usb 2-1.2: New USB device found, idVendor=0fd9, idProduct=009b,
bcdDevice= 0.02
[ 251.610025] usb 2-1.2: New USB device strings: Mfr=6, Product=7,
SerialNumber=3
[ 251.610032] usb 2-1.2: Product: Elgato 4K X
[ 251.610037] usb 2-1.2: Manufacturer: Elgato
[ 251.610042] usb 2-1.2: SerialNumber: A7SNB504228NRE
[ 251.690762] uvcvideo 2-1.2:1.1: Unknown video format
30313050-0000-0010-8000-00aa00389b71
[ 251.690788] usb 2-1.2: Found UVC 1.00 device Elgato 4K X (0fd9:009b)
[ 251.901185] usb 2-1.2: 3:2: failed to get current value for ch 0 (-22)
[ 260.424232] retire_capture_urb: 18 callbacks suppressed
/: Bus 002.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/2p, 10000M
|__ Port 001: Dev 002, If 0, Class=Hub, Driver=hub/2p, 10000M
|__ Port 002: Dev 003, If 0, Class=Video, Driver=uvcvideo, 10000M
|__ Port 002: Dev 003, If 1, Class=Video, Driver=uvcvideo, 10000M
|__ Port 002: Dev 003, If 2, Class=Audio, Driver=snd-usb-audio, 10000M
|__ Port 002: Dev 003, If 3, Class=Audio, Driver=snd-usb-audio, 10000M
When using the USB4 port, the capture card is still only detected as a
SuperSpeed" device. Which must be do to another issue.
[ 3.404518] usb 8-1: new SuperSpeed USB device number 2 using xhci_hcd
[ 3.461502] usb 8-1: new device idVendor fd9 idProduct 9c
[ 3.461514] usb 8-1: too lazy to get BOS descriptor or descriptor too short
[ 3.537941] usb 8-1: New USB device found, idVendor=0fd9, idProduct=009c,
bcdDevice= 0.02
[ 3.537948] usb 8-1: New USB device strings: Mfr=6, Product=7,
SerialNumber=3
[ 3.537953] usb 8-1: Product: Elgato 4K X
[ 3.537956] usb 8-1: Manufacturer: Elgato
[ 3.537959] usb 8-1: SerialNumber: A7SNB504228NRE
[ 6.175241] usb 8-1: Found UVC 1.00 device Elgato 4K X (0fd9:009c)
[ 6.329905] usb 8-1: 3:2: failed to get current value for ch 0 (-22)
/: Bus 008.Port 001: Dev 001, Class=root_hub, Driver=xhci_hcd/1p, 10000M
|__ Port 001: Dev 002, If 0, Class=Video, Driver=uvcvideo, 5000M
|__ Port 001: Dev 002, If 1, Class=Video, Driver=uvcvideo, 5000M
|__ Port 001: Dev 002, If 2, Class=Audio, Driver=snd-usb-audio, 5000M
|__ Port 001: Dev 002, If 3, Class=Audio, Driver=snd-usb-audio, 5000M
Thanks so much for your help!
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From: bugzilla-daemon @ 2025-05-02 20:36 UTC (permalink / raw)
To: linux-usb
https://bugzilla.kernel.org/show_bug.cgi?id=220027
--- Comment #9 from Michał Pecio (michal.pecio@gmail.com) ---
That's good. Does it work, as in all the video modes are there and run at
advertised frame rates? There are some missing bits in support for 10Gbit
isochronous video devices, but maybe this one is bulk.
Out of curiosity, what happens if you run this as root?
lsusb -d 0fd9:009c -v
It will request BOS from this device again, and for real.
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From: bugzilla-daemon @ 2025-05-03 15:31 UTC (permalink / raw)
To: linux-usb
https://bugzilla.kernel.org/show_bug.cgi?id=220027
--- Comment #10 from Niko (nrkowalski@gmail.com) ---
Yep, all resolutions and framerates are there and appear to be working. I just
noticed there is a different PID when its detected as SuperSpeed (0x009c) vs
SuperSpeed Plus (0x009b).
I guess thats how it changes what is supported based on connected speed.
Anyways whats weird ( or not weird ) is that its now working at the 10Gbps
speed when using USB4.
Here is the output of 'lsusb -d 0fd9:009b -v', Do you want me to boot into an
unpatched kernel so I can do the same for the other PID (0x009c)?
Bus 008 Device 002: ID 0fd9:009b Elgato Systems GmbH Elgato 4K X
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 3.20
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2 [unknown]
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 9
idVendor 0x0fd9 Elgato Systems GmbH
idProduct 0x009b Elgato 4K X
bcdDevice 0.02
iManufacturer 6 Elgato
iProduct 7 Elgato 4K X
iSerial 3 A7SNB504228NRE
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x08bd
bNumInterfaces 4
bConfigurationValue 1
iConfiguration 4
bmAttributes 0xc0
Self Powered
MaxPower 896mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 2
bFunctionClass 14 Video
bFunctionSubClass 3 Video Interface Collection
bFunctionProtocol 0
iFunction 5
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 1 Video Control
bInterfaceProtocol 0
iInterface 5
VideoControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdUVC 1.00
wTotalLength 0x0050
dwClockFrequency 27.000000MHz
bInCollection 1
baInterfaceNr( 0) 1
VideoControl Interface Descriptor:
bLength 18
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0201 Camera Sensor
bAssocTerminal 0
iTerminal 0
wObjectiveFocalLengthMin 0
wObjectiveFocalLengthMax 0
wOcularFocalLength 0
bControlSize 3
bmControls 0x00000000
VideoControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 5 (PROCESSING_UNIT)
Warning: Descriptor too short
bUnitID 2
bSourceID 1
wMaxMultiplier 16384
bControlSize 3
bmControls 0x0000000f
Brightness
Contrast
Hue
Saturation
iProcessing 0
bmVideoStandards 0x09
None
SECAM - 625/50
VideoControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 3
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 4
iTerminal 0
VideoControl Interface Descriptor:
bLength 28
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 4
guidExtensionCode {961073c7-49f7-44f2-ab42-e940405940c2}
bNumControls 17
bNrInPins 1
baSourceID( 0) 2
bControlSize 3
bmControls( 0) 0x0f
bmControls( 1) 0xfe
bmControls( 2) 0x01
iExtension 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 8
bMaxBurst 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 6
VideoStreaming Interface Descriptor:
bLength 19
bDescriptorType 36
bDescriptorSubtype 1 (INPUT_HEADER)
bNumFormats 6
wTotalLength 0x07b5
bEndpointAddress 0x82 EP 2 IN
bmInfo 0
bTerminalLink 3
bStillCaptureMethod 0
bTriggerSupport 0
bTriggerUsage 0
bControlSize 1
bmaControls( 0) 0
bmaControls( 1) 4
bmaControls( 2) 0
bmaControls( 3) 0
bmaControls( 4) 0
bmaControls( 5) 0
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 1
bNumFrameDescriptors 9
guidFormat
{32595559-0000-0010-8000-00aa00389b71}
bBitsPerPixel 16
bDefaultFrameIndex 5
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 480
dwMinBitRate 147456000
dwMaxBitRate 294912000
dwMaxVideoFrameBufferSize 614400
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 480
dwMinBitRate 165888000
dwMaxBitRate 331776000
dwMaxVideoFrameBufferSize 691200
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 576
dwMinBitRate 331776000
dwMaxBitRate 331776000
dwMaxVideoFrameBufferSize 829440
dwDefaultFrameInterval 200000
bFrameIntervalType 1
dwFrameInterval( 0) 200000
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 737280000
dwMaxBitRate 1769472000
dwMaxVideoFrameBufferSize 1843200
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 166666
dwFrameInterval( 2) 166833
dwFrameInterval( 3) 200000
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 994332671
dwMaxBitRate 3981312000
dwMaxVideoFrameBufferSize 4147200
dwDefaultFrameInterval 83333
bFrameIntervalType 7
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
dwFrameInterval( 4) 200000
dwFrameInterval( 5) 333333
dwFrameInterval( 6) 333667
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 6
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1080
dwMinBitRate 2651553791
dwMaxBitRate 2654208000
dwMaxVideoFrameBufferSize 5529600
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
VideoStreaming Interface Descriptor:
bLength 46
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 7
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1440
dwMinBitRate 1767702527
dwMaxBitRate 3538944000
dwMaxVideoFrameBufferSize 7372800
dwDefaultFrameInterval 166666
bFrameIntervalType 5
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 8
bmCapabilities 0x00
Still image unsupported
wWidth 3440
wHeight 1440
dwMinBitRate 4294967295
dwMaxBitRate 4294967295
dwMaxVideoFrameBufferSize 9907200
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
VideoStreaming Interface Descriptor:
bLength 38
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 9
bmCapabilities 0x00
Still image unsupported
wWidth 3840
wHeight 2160
dwMinBitRate 3977330687
dwMaxBitRate 3981312000
dwMaxVideoFrameBufferSize 16588800
dwDefaultFrameInterval 200000
bFrameIntervalType 3
dwFrameInterval( 0) 200000
dwFrameInterval( 1) 333333
dwFrameInterval( 2) 333667
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 1 (BT.709)
VideoStreaming Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 6 (FORMAT_MJPEG)
bFormatIndex 2
bNumFrameDescriptors 6
bFlags 0
Fixed-size samples: No
bDefaultFrameIndex 6
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 1 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 737280000
dwMaxBitRate 1769472000
dwMaxVideoFrameBufferSize 1843200
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 166666
dwFrameInterval( 2) 166833
dwFrameInterval( 3) 200000
VideoStreaming Interface Descriptor:
bLength 58
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 994332671
dwMaxBitRate 3981312000
dwMaxVideoFrameBufferSize 4147200
dwDefaultFrameInterval 41666
bFrameIntervalType 8
dwFrameInterval( 0) 41666
dwFrameInterval( 1) 69444
dwFrameInterval( 2) 83333
dwFrameInterval( 3) 166666
dwFrameInterval( 4) 166833
dwFrameInterval( 5) 200000
dwFrameInterval( 6) 333333
dwFrameInterval( 7) 333667
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1080
dwMinBitRate 2651553791
dwMaxBitRate 2654208000
dwMaxVideoFrameBufferSize 5529600
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1440
dwMinBitRate 1767702527
dwMaxBitRate 3538944000
dwMaxVideoFrameBufferSize 7372800
dwDefaultFrameInterval 83333
bFrameIntervalType 7
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
dwFrameInterval( 4) 200000
dwFrameInterval( 5) 333333
dwFrameInterval( 6) 333667
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 3440
wHeight 1440
dwMinBitRate 4294967295
dwMaxBitRate 4294967295
dwMaxVideoFrameBufferSize 9907200
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 6
bmCapabilities 0x00
Still image unsupported
wWidth 3840
wHeight 2160
dwMinBitRate 3977330687
dwMaxBitRate 3981312000
dwMaxVideoFrameBufferSize 16588800
dwDefaultFrameInterval 83333
bFrameIntervalType 7
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
dwFrameInterval( 4) 200000
dwFrameInterval( 5) 333333
dwFrameInterval( 6) 333667
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 4 (SMPTE 170M)
bTransferCharacteristics 4 (SMPTE 170M)
bMatrixCoefficients 4 (SMPTE 170M (BT.601))
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 3
bNumFrameDescriptors 9
guidFormat
{3231564e-0000-0010-8000-00aa00389b71}
bBitsPerPixel 12
bDefaultFrameIndex 9
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 480
dwMinBitRate 110592000
dwMaxBitRate 221184000
dwMaxVideoFrameBufferSize 460800
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 480
dwMinBitRate 124416000
dwMaxBitRate 248832000
dwMaxVideoFrameBufferSize 518400
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 576
dwMinBitRate 248832000
dwMaxBitRate 248832000
dwMaxVideoFrameBufferSize 622080
dwDefaultFrameInterval 200000
bFrameIntervalType 1
dwFrameInterval( 0) 200000
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 552960000
dwMaxBitRate 1327104000
dwMaxVideoFrameBufferSize 1382400
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 166666
dwFrameInterval( 2) 166833
dwFrameInterval( 3) 200000
VideoStreaming Interface Descriptor:
bLength 58
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 745749503
dwMaxBitRate 3583180800
dwMaxVideoFrameBufferSize 3110400
dwDefaultFrameInterval 41666
bFrameIntervalType 8
dwFrameInterval( 0) 41666
dwFrameInterval( 1) 69444
dwFrameInterval( 2) 83333
dwFrameInterval( 3) 166666
dwFrameInterval( 4) 166833
dwFrameInterval( 5) 200000
dwFrameInterval( 6) 333333
dwFrameInterval( 7) 333667
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 6
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1080
dwMinBitRate 1988665343
dwMaxBitRate 3981312000
dwMaxVideoFrameBufferSize 4147200
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 7
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1440
dwMinBitRate 1325776895
dwMaxBitRate 2654208000
dwMaxVideoFrameBufferSize 5529600
dwDefaultFrameInterval 83333
bFrameIntervalType 7
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
dwFrameInterval( 4) 200000
dwFrameInterval( 5) 333333
dwFrameInterval( 6) 333667
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 8
bmCapabilities 0x00
Still image unsupported
wWidth 3440
wHeight 1440
dwMinBitRate 3563025407
dwMaxBitRate 3566592000
dwMaxVideoFrameBufferSize 7430400
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
VideoStreaming Interface Descriptor:
bLength 46
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 9
bmCapabilities 0x00
Still image unsupported
wWidth 3840
wHeight 2160
dwMinBitRate 2982998015
dwMaxBitRate 2985984000
dwMaxVideoFrameBufferSize 12441600
dwDefaultFrameInterval 166666
bFrameIntervalType 5
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 1 (BT.709)
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 4
bNumFrameDescriptors 9
guidFormat
{30323449-0000-0010-8000-00aa00389b71}
bBitsPerPixel 12
bDefaultFrameIndex 9
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 480
dwMinBitRate 110592000
dwMaxBitRate 221184000
dwMaxVideoFrameBufferSize 460800
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 480
dwMinBitRate 124416000
dwMaxBitRate 248832000
dwMaxVideoFrameBufferSize 518400
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 576
dwMinBitRate 248832000
dwMaxBitRate 248832000
dwMaxVideoFrameBufferSize 622080
dwDefaultFrameInterval 200000
bFrameIntervalType 1
dwFrameInterval( 0) 200000
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 552960000
dwMaxBitRate 1327104000
dwMaxVideoFrameBufferSize 1382400
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 166666
dwFrameInterval( 2) 166833
dwFrameInterval( 3) 200000
VideoStreaming Interface Descriptor:
bLength 58
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 745749503
dwMaxBitRate 3583180800
dwMaxVideoFrameBufferSize 3110400
dwDefaultFrameInterval 41666
bFrameIntervalType 8
dwFrameInterval( 0) 41666
dwFrameInterval( 1) 69444
dwFrameInterval( 2) 83333
dwFrameInterval( 3) 166666
dwFrameInterval( 4) 166833
dwFrameInterval( 5) 200000
dwFrameInterval( 6) 333333
dwFrameInterval( 7) 333667
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 6
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1080
dwMinBitRate 1988665343
dwMaxBitRate 3981312000
dwMaxVideoFrameBufferSize 4147200
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 7
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1440
dwMinBitRate 1325776895
dwMaxBitRate 2654208000
dwMaxVideoFrameBufferSize 5529600
dwDefaultFrameInterval 83333
bFrameIntervalType 7
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
dwFrameInterval( 4) 200000
dwFrameInterval( 5) 333333
dwFrameInterval( 6) 333667
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 8
bmCapabilities 0x00
Still image unsupported
wWidth 3440
wHeight 1440
dwMinBitRate 3563025407
dwMaxBitRate 3566592000
dwMaxVideoFrameBufferSize 7430400
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
VideoStreaming Interface Descriptor:
bLength 46
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 9
bmCapabilities 0x00
Still image unsupported
wWidth 3840
wHeight 2160
dwMinBitRate 2982998015
dwMaxBitRate 2985984000
dwMaxVideoFrameBufferSize 12441600
dwDefaultFrameInterval 166666
bFrameIntervalType 5
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 1 (BT.709)
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 5
bNumFrameDescriptors 4
guidFormat
{e436eb7d-524f-11ce-9f53-0020af0ba770}
bBitsPerPixel 24
bDefaultFrameIndex 2
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 1105920000
dwMaxBitRate 2654208000
dwMaxVideoFrameBufferSize 2764800
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 166666
dwFrameInterval( 2) 166833
dwFrameInterval( 3) 200000
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 1491499007
dwMaxBitRate 2985984000
dwMaxVideoFrameBufferSize 6220800
dwDefaultFrameInterval 83333
bFrameIntervalType 6
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 166666
dwFrameInterval( 2) 166833
dwFrameInterval( 3) 200000
dwFrameInterval( 4) 333333
dwFrameInterval( 5) 333667
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1080
dwMinBitRate 3977330687
dwMaxBitRate 3981312000
dwMaxVideoFrameBufferSize 8294400
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
VideoStreaming Interface Descriptor:
bLength 46
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1440
dwMinBitRate 2651553791
dwMaxBitRate 2654208000
dwMaxVideoFrameBufferSize 11059200
dwDefaultFrameInterval 166666
bFrameIntervalType 5
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 1 (BT.709)
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 7
bNumFrameDescriptors 5
guidFormat
{30313050-0000-0010-8000-00aa00389b71}
bBitsPerPixel 24
bDefaultFrameIndex 2
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 1105920000
dwMaxBitRate 2654208000
dwMaxVideoFrameBufferSize 2764800
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 166666
dwFrameInterval( 2) 166833
dwFrameInterval( 3) 200000
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 1491499007
dwMaxBitRate 2985984000
dwMaxVideoFrameBufferSize 6220800
dwDefaultFrameInterval 83333
bFrameIntervalType 6
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 166666
dwFrameInterval( 2) 166833
dwFrameInterval( 3) 200000
dwFrameInterval( 4) 333333
dwFrameInterval( 5) 333667
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1080
dwMinBitRate 3977330687
dwMaxBitRate 3981312000
dwMaxVideoFrameBufferSize 8294400
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
VideoStreaming Interface Descriptor:
bLength 46
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1440
dwMinBitRate 2651553791
dwMaxBitRate 2654208000
dwMaxVideoFrameBufferSize 11059200
dwDefaultFrameInterval 166666
bFrameIntervalType 5
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 3840
wHeight 2160
dwMinBitRate 4294967295
dwMaxBitRate 4294967295
dwMaxVideoFrameBufferSize 24883200
dwDefaultFrameInterval 333333
bFrameIntervalType 2
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 333667
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 1 (BT.709)
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 1
bMaxBurst 7
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 2
bInterfaceCount 2
bFunctionClass 1 Audio
bFunctionSubClass 1 Control Device
bFunctionProtocol 0
iFunction 8
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 8
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 0x002d
bInCollection 1
baInterfaceNr(0) 3
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0602 Digital Audio Interface
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 10
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 2
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 3
iTerminal 0
AudioControl Interface Descriptor:
bLength 8
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 3
bSourceID 4
bControlSize 1
bmaControls(0) 0x01
Mute Control
iFeature 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 5 (SELECTOR_UNIT)
bUnitID 4
bNrInPins 1
baSourceID(0) 1
iSelector 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 10
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 10
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 2
bDelay 1 frames
wFormatTag 0x0001 PCM
AudioStreaming Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 48000
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x00d0 1x 208 bytes
bInterval 4
bMaxBurst 0
AudioStreaming Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0x0000
--
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^ permalink raw reply [flat|nested] 13+ messages in thread* [Bug 220027] USB 3.2 capture cards using incorrect USB speed
2025-04-17 18:26 [Bug 220027] New: USB 3.2 capture cards using incorrect USB speed bugzilla-daemon
` (9 preceding siblings ...)
2025-05-03 15:31 ` bugzilla-daemon
@ 2025-05-03 15:59 ` bugzilla-daemon
2025-05-04 0:27 ` bugzilla-daemon
11 siblings, 0 replies; 13+ messages in thread
From: bugzilla-daemon @ 2025-05-03 15:59 UTC (permalink / raw)
To: linux-usb
https://bugzilla.kernel.org/show_bug.cgi?id=220027
--- Comment #11 from Michał Pecio (michal.pecio@gmail.com) ---
(In reply to Niko from comment #10)
> Here is the output of 'lsusb -d 0fd9:009b -v', Do you want me to boot into
> an unpatched kernel so I can do the same for the other PID (0x009c)?
No, the point was to run lsusb as root at 10G speed. As root, it will request
the BOS descriptor (bypassing the patched kernel code) so we could see if the
device has a temporary problem with BOS at that particular stage of
enumeration, or if it's completely broken and never responds to this request.
I think it may be completely broken, because I installed Wireshark on Windows
and it looks like my Windows 10 doesn't fetch BOS descriptors from SuperSpeed
devices at all (maybe it does from hubs, I haven't tried).
--
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^ permalink raw reply [flat|nested] 13+ messages in thread* [Bug 220027] USB 3.2 capture cards using incorrect USB speed
2025-04-17 18:26 [Bug 220027] New: USB 3.2 capture cards using incorrect USB speed bugzilla-daemon
` (10 preceding siblings ...)
2025-05-03 15:59 ` bugzilla-daemon
@ 2025-05-04 0:27 ` bugzilla-daemon
11 siblings, 0 replies; 13+ messages in thread
From: bugzilla-daemon @ 2025-05-04 0:27 UTC (permalink / raw)
To: linux-usb
https://bugzilla.kernel.org/show_bug.cgi?id=220027
--- Comment #12 from Niko (nrkowalski@gmail.com) ---
Apologies, I did not run that as root. Here is the output from root.
Bus 008 Device 002: ID 0fd9:009b Elgato Systems GmbH Elgato 4K X
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 3.20
bDeviceClass 239 Miscellaneous Device
bDeviceSubClass 2 [unknown]
bDeviceProtocol 1 Interface Association
bMaxPacketSize0 9
idVendor 0x0fd9 Elgato Systems GmbH
idProduct 0x009b Elgato 4K X
bcdDevice 0.02
iManufacturer 6 Elgato
iProduct 7 Elgato 4K X
iSerial 3 A7SNB504228NRE
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x08bd
bNumInterfaces 4
bConfigurationValue 1
iConfiguration 4 Elgato 4K X
bmAttributes 0xc0
Self Powered
MaxPower 896mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 2
bFunctionClass 14 Video
bFunctionSubClass 3 Video Interface Collection
bFunctionProtocol 0
iFunction 5 Elgato 4K X
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 1 Video Control
bInterfaceProtocol 0
iInterface 5 Elgato 4K X
VideoControl Interface Descriptor:
bLength 13
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdUVC 1.00
wTotalLength 0x0050
dwClockFrequency 27.000000MHz
bInCollection 1
baInterfaceNr( 0) 1
VideoControl Interface Descriptor:
bLength 18
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0201 Camera Sensor
bAssocTerminal 0
iTerminal 0
wObjectiveFocalLengthMin 0
wObjectiveFocalLengthMax 0
wOcularFocalLength 0
bControlSize 3
bmControls 0x00000000
VideoControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 5 (PROCESSING_UNIT)
Warning: Descriptor too short
bUnitID 2
bSourceID 1
wMaxMultiplier 16384
bControlSize 3
bmControls 0x0000000f
Brightness
Contrast
Hue
Saturation
iProcessing 0
bmVideoStandards 0x09
None
SECAM - 625/50
VideoControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 3
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 4
iTerminal 0
VideoControl Interface Descriptor:
bLength 28
bDescriptorType 36
bDescriptorSubtype 6 (EXTENSION_UNIT)
bUnitID 4
guidExtensionCode {961073c7-49f7-44f2-ab42-e940405940c2}
bNumControls 17
bNrInPins 1
baSourceID( 0) 2
bControlSize 3
bmControls( 0) 0x0f
bmControls( 1) 0xfe
bmControls( 2) 0x01
iExtension 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 8
bMaxBurst 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 14 Video
bInterfaceSubClass 2 Video Streaming
bInterfaceProtocol 0
iInterface 6 Elgato
VideoStreaming Interface Descriptor:
bLength 19
bDescriptorType 36
bDescriptorSubtype 1 (INPUT_HEADER)
bNumFormats 6
wTotalLength 0x07b5
bEndpointAddress 0x82 EP 2 IN
bmInfo 0
bTerminalLink 3
bStillCaptureMethod 0
bTriggerSupport 0
bTriggerUsage 0
bControlSize 1
bmaControls( 0) 0
bmaControls( 1) 4
bmaControls( 2) 0
bmaControls( 3) 0
bmaControls( 4) 0
bmaControls( 5) 0
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 1
bNumFrameDescriptors 9
guidFormat
{32595559-0000-0010-8000-00aa00389b71}
bBitsPerPixel 16
bDefaultFrameIndex 5
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 480
dwMinBitRate 147456000
dwMaxBitRate 294912000
dwMaxVideoFrameBufferSize 614400
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 480
dwMinBitRate 165888000
dwMaxBitRate 331776000
dwMaxVideoFrameBufferSize 691200
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 576
dwMinBitRate 331776000
dwMaxBitRate 331776000
dwMaxVideoFrameBufferSize 829440
dwDefaultFrameInterval 200000
bFrameIntervalType 1
dwFrameInterval( 0) 200000
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 737280000
dwMaxBitRate 1769472000
dwMaxVideoFrameBufferSize 1843200
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 166666
dwFrameInterval( 2) 166833
dwFrameInterval( 3) 200000
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 994332671
dwMaxBitRate 3981312000
dwMaxVideoFrameBufferSize 4147200
dwDefaultFrameInterval 83333
bFrameIntervalType 7
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
dwFrameInterval( 4) 200000
dwFrameInterval( 5) 333333
dwFrameInterval( 6) 333667
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 6
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1080
dwMinBitRate 2651553791
dwMaxBitRate 2654208000
dwMaxVideoFrameBufferSize 5529600
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
VideoStreaming Interface Descriptor:
bLength 46
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 7
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1440
dwMinBitRate 1767702527
dwMaxBitRate 3538944000
dwMaxVideoFrameBufferSize 7372800
dwDefaultFrameInterval 166666
bFrameIntervalType 5
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 8
bmCapabilities 0x00
Still image unsupported
wWidth 3440
wHeight 1440
dwMinBitRate 4294967295
dwMaxBitRate 4294967295
dwMaxVideoFrameBufferSize 9907200
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
VideoStreaming Interface Descriptor:
bLength 38
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 9
bmCapabilities 0x00
Still image unsupported
wWidth 3840
wHeight 2160
dwMinBitRate 3977330687
dwMaxBitRate 3981312000
dwMaxVideoFrameBufferSize 16588800
dwDefaultFrameInterval 200000
bFrameIntervalType 3
dwFrameInterval( 0) 200000
dwFrameInterval( 1) 333333
dwFrameInterval( 2) 333667
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 1 (BT.709)
VideoStreaming Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 6 (FORMAT_MJPEG)
bFormatIndex 2
bNumFrameDescriptors 6
bFlags 0
Fixed-size samples: No
bDefaultFrameIndex 6
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 1 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 737280000
dwMaxBitRate 1769472000
dwMaxVideoFrameBufferSize 1843200
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 166666
dwFrameInterval( 2) 166833
dwFrameInterval( 3) 200000
VideoStreaming Interface Descriptor:
bLength 58
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 994332671
dwMaxBitRate 3981312000
dwMaxVideoFrameBufferSize 4147200
dwDefaultFrameInterval 41666
bFrameIntervalType 8
dwFrameInterval( 0) 41666
dwFrameInterval( 1) 69444
dwFrameInterval( 2) 83333
dwFrameInterval( 3) 166666
dwFrameInterval( 4) 166833
dwFrameInterval( 5) 200000
dwFrameInterval( 6) 333333
dwFrameInterval( 7) 333667
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1080
dwMinBitRate 2651553791
dwMaxBitRate 2654208000
dwMaxVideoFrameBufferSize 5529600
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1440
dwMinBitRate 1767702527
dwMaxBitRate 3538944000
dwMaxVideoFrameBufferSize 7372800
dwDefaultFrameInterval 83333
bFrameIntervalType 7
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
dwFrameInterval( 4) 200000
dwFrameInterval( 5) 333333
dwFrameInterval( 6) 333667
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 3440
wHeight 1440
dwMinBitRate 4294967295
dwMaxBitRate 4294967295
dwMaxVideoFrameBufferSize 9907200
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 7 (FRAME_MJPEG)
bFrameIndex 6
bmCapabilities 0x00
Still image unsupported
wWidth 3840
wHeight 2160
dwMinBitRate 3977330687
dwMaxBitRate 3981312000
dwMaxVideoFrameBufferSize 16588800
dwDefaultFrameInterval 83333
bFrameIntervalType 7
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
dwFrameInterval( 4) 200000
dwFrameInterval( 5) 333333
dwFrameInterval( 6) 333667
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 4 (SMPTE 170M)
bTransferCharacteristics 4 (SMPTE 170M)
bMatrixCoefficients 4 (SMPTE 170M (BT.601))
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 3
bNumFrameDescriptors 9
guidFormat
{3231564e-0000-0010-8000-00aa00389b71}
bBitsPerPixel 12
bDefaultFrameIndex 9
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 480
dwMinBitRate 110592000
dwMaxBitRate 221184000
dwMaxVideoFrameBufferSize 460800
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 480
dwMinBitRate 124416000
dwMaxBitRate 248832000
dwMaxVideoFrameBufferSize 518400
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 576
dwMinBitRate 248832000
dwMaxBitRate 248832000
dwMaxVideoFrameBufferSize 622080
dwDefaultFrameInterval 200000
bFrameIntervalType 1
dwFrameInterval( 0) 200000
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 552960000
dwMaxBitRate 1327104000
dwMaxVideoFrameBufferSize 1382400
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 166666
dwFrameInterval( 2) 166833
dwFrameInterval( 3) 200000
VideoStreaming Interface Descriptor:
bLength 58
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 745749503
dwMaxBitRate 3583180800
dwMaxVideoFrameBufferSize 3110400
dwDefaultFrameInterval 41666
bFrameIntervalType 8
dwFrameInterval( 0) 41666
dwFrameInterval( 1) 69444
dwFrameInterval( 2) 83333
dwFrameInterval( 3) 166666
dwFrameInterval( 4) 166833
dwFrameInterval( 5) 200000
dwFrameInterval( 6) 333333
dwFrameInterval( 7) 333667
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 6
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1080
dwMinBitRate 1988665343
dwMaxBitRate 3981312000
dwMaxVideoFrameBufferSize 4147200
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 7
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1440
dwMinBitRate 1325776895
dwMaxBitRate 2654208000
dwMaxVideoFrameBufferSize 5529600
dwDefaultFrameInterval 83333
bFrameIntervalType 7
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
dwFrameInterval( 4) 200000
dwFrameInterval( 5) 333333
dwFrameInterval( 6) 333667
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 8
bmCapabilities 0x00
Still image unsupported
wWidth 3440
wHeight 1440
dwMinBitRate 3563025407
dwMaxBitRate 3566592000
dwMaxVideoFrameBufferSize 7430400
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
VideoStreaming Interface Descriptor:
bLength 46
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 9
bmCapabilities 0x00
Still image unsupported
wWidth 3840
wHeight 2160
dwMinBitRate 2982998015
dwMaxBitRate 2985984000
dwMaxVideoFrameBufferSize 12441600
dwDefaultFrameInterval 166666
bFrameIntervalType 5
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 1 (BT.709)
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 4
bNumFrameDescriptors 9
guidFormat
{30323449-0000-0010-8000-00aa00389b71}
bBitsPerPixel 12
bDefaultFrameIndex 9
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 640
wHeight 480
dwMinBitRate 110592000
dwMaxBitRate 221184000
dwMaxVideoFrameBufferSize 460800
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 480
dwMinBitRate 124416000
dwMaxBitRate 248832000
dwMaxVideoFrameBufferSize 518400
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 333333
VideoStreaming Interface Descriptor:
bLength 30
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 720
wHeight 576
dwMinBitRate 248832000
dwMaxBitRate 248832000
dwMaxVideoFrameBufferSize 622080
dwDefaultFrameInterval 200000
bFrameIntervalType 1
dwFrameInterval( 0) 200000
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 552960000
dwMaxBitRate 1327104000
dwMaxVideoFrameBufferSize 1382400
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 166666
dwFrameInterval( 2) 166833
dwFrameInterval( 3) 200000
VideoStreaming Interface Descriptor:
bLength 58
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 745749503
dwMaxBitRate 3583180800
dwMaxVideoFrameBufferSize 3110400
dwDefaultFrameInterval 41666
bFrameIntervalType 8
dwFrameInterval( 0) 41666
dwFrameInterval( 1) 69444
dwFrameInterval( 2) 83333
dwFrameInterval( 3) 166666
dwFrameInterval( 4) 166833
dwFrameInterval( 5) 200000
dwFrameInterval( 6) 333333
dwFrameInterval( 7) 333667
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 6
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1080
dwMinBitRate 1988665343
dwMaxBitRate 3981312000
dwMaxVideoFrameBufferSize 4147200
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
VideoStreaming Interface Descriptor:
bLength 54
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 7
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1440
dwMinBitRate 1325776895
dwMaxBitRate 2654208000
dwMaxVideoFrameBufferSize 5529600
dwDefaultFrameInterval 83333
bFrameIntervalType 7
dwFrameInterval( 0) 69444
dwFrameInterval( 1) 83333
dwFrameInterval( 2) 166666
dwFrameInterval( 3) 166833
dwFrameInterval( 4) 200000
dwFrameInterval( 5) 333333
dwFrameInterval( 6) 333667
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 8
bmCapabilities 0x00
Still image unsupported
wWidth 3440
wHeight 1440
dwMinBitRate 3563025407
dwMaxBitRate 3566592000
dwMaxVideoFrameBufferSize 7430400
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
VideoStreaming Interface Descriptor:
bLength 46
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 9
bmCapabilities 0x00
Still image unsupported
wWidth 3840
wHeight 2160
dwMinBitRate 2982998015
dwMaxBitRate 2985984000
dwMaxVideoFrameBufferSize 12441600
dwDefaultFrameInterval 166666
bFrameIntervalType 5
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 1 (BT.709)
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 5
bNumFrameDescriptors 4
guidFormat
{e436eb7d-524f-11ce-9f53-0020af0ba770}
bBitsPerPixel 24
bDefaultFrameIndex 2
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 1105920000
dwMaxBitRate 2654208000
dwMaxVideoFrameBufferSize 2764800
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 166666
dwFrameInterval( 2) 166833
dwFrameInterval( 3) 200000
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 1491499007
dwMaxBitRate 2985984000
dwMaxVideoFrameBufferSize 6220800
dwDefaultFrameInterval 83333
bFrameIntervalType 6
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 166666
dwFrameInterval( 2) 166833
dwFrameInterval( 3) 200000
dwFrameInterval( 4) 333333
dwFrameInterval( 5) 333667
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1080
dwMinBitRate 3977330687
dwMaxBitRate 3981312000
dwMaxVideoFrameBufferSize 8294400
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
VideoStreaming Interface Descriptor:
bLength 46
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1440
dwMinBitRate 2651553791
dwMaxBitRate 2654208000
dwMaxVideoFrameBufferSize 11059200
dwDefaultFrameInterval 166666
bFrameIntervalType 5
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 1 (BT.709)
VideoStreaming Interface Descriptor:
bLength 27
bDescriptorType 36
bDescriptorSubtype 4 (FORMAT_UNCOMPRESSED)
bFormatIndex 7
bNumFrameDescriptors 5
guidFormat
{30313050-0000-0010-8000-00aa00389b71}
bBitsPerPixel 24
bDefaultFrameIndex 2
bAspectRatioX 0
bAspectRatioY 0
bmInterlaceFlags 0x00
Interlaced stream or variable: No
Fields per frame: 2 fields
Field 1 first: No
Field pattern: Field 1 only
bCopyProtect 0
VideoStreaming Interface Descriptor:
bLength 42
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 1
bmCapabilities 0x00
Still image unsupported
wWidth 1280
wHeight 720
dwMinBitRate 1105920000
dwMaxBitRate 2654208000
dwMaxVideoFrameBufferSize 2764800
dwDefaultFrameInterval 83333
bFrameIntervalType 4
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 166666
dwFrameInterval( 2) 166833
dwFrameInterval( 3) 200000
VideoStreaming Interface Descriptor:
bLength 50
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 2
bmCapabilities 0x00
Still image unsupported
wWidth 1920
wHeight 1080
dwMinBitRate 1491499007
dwMaxBitRate 2985984000
dwMaxVideoFrameBufferSize 6220800
dwDefaultFrameInterval 83333
bFrameIntervalType 6
dwFrameInterval( 0) 83333
dwFrameInterval( 1) 166666
dwFrameInterval( 2) 166833
dwFrameInterval( 3) 200000
dwFrameInterval( 4) 333333
dwFrameInterval( 5) 333667
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 3
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1080
dwMinBitRate 3977330687
dwMaxBitRate 3981312000
dwMaxVideoFrameBufferSize 8294400
dwDefaultFrameInterval 166666
bFrameIntervalType 2
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
VideoStreaming Interface Descriptor:
bLength 46
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 4
bmCapabilities 0x00
Still image unsupported
wWidth 2560
wHeight 1440
dwMinBitRate 2651553791
dwMaxBitRate 2654208000
dwMaxVideoFrameBufferSize 11059200
dwDefaultFrameInterval 166666
bFrameIntervalType 5
dwFrameInterval( 0) 166666
dwFrameInterval( 1) 166833
dwFrameInterval( 2) 200000
dwFrameInterval( 3) 333333
dwFrameInterval( 4) 333667
VideoStreaming Interface Descriptor:
bLength 34
bDescriptorType 36
bDescriptorSubtype 5 (FRAME_UNCOMPRESSED)
bFrameIndex 5
bmCapabilities 0x00
Still image unsupported
wWidth 3840
wHeight 2160
dwMinBitRate 4294967295
dwMaxBitRate 4294967295
dwMaxVideoFrameBufferSize 24883200
dwDefaultFrameInterval 333333
bFrameIntervalType 2
dwFrameInterval( 0) 333333
dwFrameInterval( 1) 333667
VideoStreaming Interface Descriptor:
bLength 6
bDescriptorType 36
bDescriptorSubtype 13 (COLORFORMAT)
bColorPrimaries 1 (BT.709,sRGB)
bTransferCharacteristics 1 (BT.709)
bMatrixCoefficients 1 (BT.709)
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0400 1x 1024 bytes
bInterval 1
bMaxBurst 7
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 2
bInterfaceCount 2
bFunctionClass 1 Audio
bFunctionSubClass 1 Control Device
bFunctionProtocol 0
iFunction 8 Elgato 4K X
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 8 Elgato 4K X
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 0x002d
bInCollection 1
baInterfaceNr(0) 3
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 1
wTerminalType 0x0602 Digital Audio Interface
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 10 Elgato 4K X
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 2
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 3
iTerminal 0
AudioControl Interface Descriptor:
bLength 8
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 3
bSourceID 4
bControlSize 1
bmaControls(0) 0x01
Mute Control
iFeature 0
AudioControl Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 5 (SELECTOR_UNIT)
bUnitID 4
bNrInPins 1
baSourceID(0) 1
iSelector 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 10 Elgato 4K X
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 10 Elgato 4K X
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 2
bDelay 1 frames
wFormatTag 0x0001 PCM
AudioStreaming Interface Descriptor:
bLength 11
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 1 Discrete
tSamFreq[ 0] 48000
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 5
Transfer Type Isochronous
Synch Type Asynchronous
Usage Type Data
wMaxPacketSize 0x00d0 1x 208 bytes
bInterval 4
bMaxBurst 0
AudioStreaming Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0x0000
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 0x002a
bNumDeviceCaps 3
USB 2.0 Extension Device Capability:
bLength 7
bDescriptorType 16
bDevCapabilityType 2
bmAttributes 0x0000f41e
BESL Link Power Management (LPM) Supported
BESL value 1024 us
Deep BESL value 61440 us
SuperSpeed USB Device Capability:
bLength 10
bDescriptorType 16
bDevCapabilityType 3
bmAttributes 0x00
wSpeedsSupported 0x000e
Device can operate at Full Speed (12Mbps)
Device can operate at High Speed (480Mbps)
Device can operate at SuperSpeed (5Gbps)
bFunctionalitySupport 1
Lowest fully-functional device speed is Full Speed (12Mbps)
bU1DevExitLat 10 micro seconds
bU2DevExitLat 2047 micro seconds
SuperSpeedPlus USB Device Capability:
bLength 20
bDescriptorType 16
bDevCapabilityType 10
bmAttributes 0x00000001
Sublink Speed Attribute count 2
Sublink Speed ID count 1
wFunctionalitySupport 0x1100
Min functional Speed Attribute ID: 0
Min functional RX lanes: 1
Min functional TX lanes: 1
bmSublinkSpeedAttr[0] 0x000a4030
Speed Attribute ID: 0 10Gb/s Symmetric RX SuperSpeedPlus
bmSublinkSpeedAttr[1] 0x000a40b0
Speed Attribute ID: 0 10Gb/s Symmetric TX SuperSpeedPlus
Device Status: 0x0001
Self Powered
nkowalski@Eva-Mi
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