Bug report for pl2303 converter (ATEN USB to serial Bridge, idVendor=067b, idProduct=23a3, bcdDevice= 1.05)

Bug report for pl2303 converter (ATEN USB to serial Bridge, idVendor=067b, idProduct=23a3, bcdDevice= 1.05)

[Eduard-Bogdan Budai]

Dear Sirs,

Today, when a USB-RJ45 adapter was conected to a cumputer running Ubuntu 
20.04.3 in its dmesg appeared:

[Thu Jan 20 15:24:17 2022] usb 1-3.1: new full-speed USB device number 7 
using xhci_hcd
[Thu Jan 20 15:24:17 2022] usb 1-3.1: New USB device found, 
idVendor=067b, idProduct=23a3, bcdDevice= 1.05
[Thu Jan 20 15:24:17 2022] usb 1-3.1: New USB device strings: Mfr=1, 
Product=2, SerialNumber=0
[Thu Jan 20 15:24:17 2022] usb 1-3.1: Product: ATEN USB to Serial Bridge
[Thu Jan 20 15:24:17 2022] usb 1-3.1: Manufacturer: Prolific Technology Inc.
[Thu Jan 20 15:24:17 2022] pl2303 1-3.1:1.0: pl2303 converter detected
[Thu Jan 20 15:24:17 2022] pl2303 1-3.1:1.0: unknown device type, please 
report to linux-usb@vger.kernel.org

The kernel version is 5.13.0-27-generic #29~20.04.1-Ubuntu.

The output of lsusb -v for this adapter is:

Bus 001 Device 007: ID 067b:23a3 Prolific Technology, Inc. Lenovo USB 
Optical Mouse
Device Descriptor:
   bLength                18
   bDescriptorType         1
   bcdUSB               2.00
   bDeviceClass            0
   bDeviceSubClass         0
   bDeviceProtocol         0
   bMaxPacketSize0        64
   idVendor           0x067b Prolific Technology, Inc.
   idProduct          0x23a3
   bcdDevice            1.05
   iManufacturer           1 Prolific Technology Inc.
   iProduct                2 ATEN USB to Serial Bridge
   iSerial                 0
   bNumConfigurations      1
   Configuration Descriptor:
     bLength                 9
     bDescriptorType         2
     wTotalLength       0x0027
     bNumInterfaces          1
     bConfigurationValue     1
     iConfiguration          0
     bmAttributes         0xbf
       (Bus Powered)
       Remote Wakeup
       Battery Powered
     MaxPower              100mA
     Interface Descriptor:
       bLength                 9
       bDescriptorType         4
       bInterfaceNumber        0
       bAlternateSetting       0
       bNumEndpoints           3
       bInterfaceClass       255 Vendor Specific Class
       bInterfaceSubClass      0
       bInterfaceProtocol      0
       iInterface              0
       Endpoint Descriptor:
         bLength                 7
         bDescriptorType         5
         bEndpointAddress     0x81  EP 1 IN
         bmAttributes            3
           Transfer Type            Interrupt
           Synch Type               None
           Usage Type               Data
         wMaxPacketSize     0x000a  1x 10 bytes
         bInterval               1
       Endpoint Descriptor:
         bLength                 7
         bDescriptorType         5
         bEndpointAddress     0x02  EP 2 OUT
         bmAttributes            2
           Transfer Type            Bulk
           Synch Type               None
           Usage Type               Data
         wMaxPacketSize     0x0040  1x 64 bytes
         bInterval               0
       Endpoint Descriptor:
         bLength                 7
         bDescriptorType         5
         bEndpointAddress     0x83  EP 3 IN
         bmAttributes            2
           Transfer Type            Bulk
           Synch Type               None
           Usage Type               Data
         wMaxPacketSize     0x0040  1x 64 bytes
         bInterval               0
Device Status:     0x0000
   (Bus Powered)

Thank you in advance for any help and/or answer. :)

-- 
Eduard-Bogdan Budai
.............................................................................
mobile: 0770/064481
office: 0364/400427
e-mail:eduard.budai@rcs-rds.ro
.............................................................................
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Re: Bug report for pl2303 converter (ATEN USB to serial Bridge, idVendor=067b, idProduct=23a3, bcdDevice= 1.05)

[Greg KH]

On Thu, Jan 20, 2022 at 05:08:15PM +0200, Eduard-Bogdan Budai wrote:
> Dear Sirs,
> 
> Today, when a USB-RJ45 adapter was conected to a cumputer running Ubuntu
> 20.04.3 in its dmesg appeared:
> 
> [Thu Jan 20 15:24:17 2022] usb 1-3.1: new full-speed USB device number 7
> using xhci_hcd
> [Thu Jan 20 15:24:17 2022] usb 1-3.1: New USB device found, idVendor=067b,
> idProduct=23a3, bcdDevice= 1.05
> [Thu Jan 20 15:24:17 2022] usb 1-3.1: New USB device strings: Mfr=1,
> Product=2, SerialNumber=0
> [Thu Jan 20 15:24:17 2022] usb 1-3.1: Product: ATEN USB to Serial Bridge
> [Thu Jan 20 15:24:17 2022] usb 1-3.1: Manufacturer: Prolific Technology Inc.
> [Thu Jan 20 15:24:17 2022] pl2303 1-3.1:1.0: pl2303 converter detected
> [Thu Jan 20 15:24:17 2022] pl2303 1-3.1:1.0: unknown device type, please
> report to linux-usb@vger.kernel.org
> 
> The kernel version is 5.13.0-27-generic #29~20.04.1-Ubuntu.

Should be fixed in newer kernel versions, this is a quite old and
obsolete kernel version.  Can you try 5.16?

thanks,

greg k-h

Re: Bug report for pl2303 converter (ATEN USB to serial Bridge, idVendor=067b, idProduct=23a3, bcdDevice= 1.05)

[Eduard-Bogdan Budai]

  Thank you very much for your answer.

The newest kernel that is in the standard Ubuntu 20.04 repositories is
today Linux 5.13.0-28-generic #31~20.04.1-Ubuntu SMP Wed Jan 19 14:08:10
UTC 2022 x86_64). After moving from 5.13.0-27-generic #29~20.04.1-Ubuntu
to the newest 5.13.0-28-generic #31~20.04.1-Ubuntu, the dmesg showed:

[Wed Feb  9 11:38:51 2022] usb 3-2: new full-speed USB device number 4
using xhci_hcd
[Wed Feb  9 11:38:51 2022] usb 3-2: New USB device found, idVendor=067b,
idProduct=23a3, bcdDevice= 1.05
[Wed Feb  9 11:38:51 2022] usb 3-2: New USB device strings: Mfr=1,
Product=2, SerialNumber=0
[Wed Feb  9 11:38:51 2022] usb 3-2: Product: ATEN USB to Serial Bridge
[Wed Feb  9 11:38:51 2022] usb 3-2: Manufacturer: Prolific Technology
Inc.
[Wed Feb  9 11:38:51 2022] usbcore: registered new interface driver
usbserial_generic
[Wed Feb  9 11:38:51 2022] usbserial: USB Serial support registered for
generic
[Wed Feb  9 11:38:51 2022] usbcore: registered new interface driver
pl2303
[Wed Feb  9 11:38:51 2022] usbserial: USB Serial support registered for
pl2303
[Wed Feb  9 11:38:51 2022] pl2303 3-2:1.0: unknown device type, please
report to linux-usb@vger.kernel.org

A 5.4.0-99-generic #112~18.04.1-Ubuntu SMP Thu Feb 3 14:09:57 UTC 2022
x86_64 from a Ubuntu 18.04 recognizes the same adapter as a ttyUSB0
(which is what is needed to be used).

Unfortunately, the environment in which happened what I described below
has certain restrictions that don't allow me to try a newer kernel than
the newest that is in the standard Ubuntu repositories...

So, in my humble opinion, we will just have to wait for the 5.16 to
appear in the standard Ubuntu repositories.

Thank you again. Very much.

On 08.02.2022 12:15, Greg KH wrote:

> On Thu, Jan 20, 2022 at 05:08:15PM +0200, Eduard-Bogdan Budai wrote:
> 
>> Dear Sirs,
>> 
>> Today, when a USB-RJ45 adapter was conected to a computer running
>> Ubuntu
>> 20.04.3 in its dmesg appeared:
>> 
>> [Thu Jan 20 15:24:17 2022] usb 1-3.1: new full-speed USB device
>> number 7
>> using xhci_hcd
>> [Thu Jan 20 15:24:17 2022] usb 1-3.1: New USB device found,
>> idVendor=067b,
>> idProduct=23a3, bcdDevice= 1.05
>> [Thu Jan 20 15:24:17 2022] usb 1-3.1: New USB device strings: Mfr=1,
>> Product=2, SerialNumber=0
>> [Thu Jan 20 15:24:17 2022] usb 1-3.1: Product: ATEN USB to Serial
>> Bridge
>> [Thu Jan 20 15:24:17 2022] usb 1-3.1: Manufacturer: Prolific
>> Technology Inc.
>> [Thu Jan 20 15:24:17 2022] pl2303 1-3.1:1.0: pl2303 converter
>> detected
>> [Thu Jan 20 15:24:17 2022] pl2303 1-3.1:1.0: unknown device type,
>> please
>> report to linux-usb@vger.kernel.org
>> 
>> The kernel version is 5.13.0-27-generic #29~20.04.1-Ubuntu.
> 
> Should be fixed in newer kernel versions, this is a quite old and
> obsolete kernel version.  Can you try 5.16?
> 
> thanks,
> 
> greg k-h

-- 
Eduard-Bogdan Budai
IT Hardware Cluj
it.cluj@rcs-rds.ro
.............................................................................
mobile: 0770/064481
office: 0364/400427
e-mail: eduard.budai@rcs-rds.ro
.............................................................................
Privileged/Confidential Information may be contained in this message. If
you are not in the addresses indicated in this message (or responsible
for delivery of the message to such person), you may not copy or deliver
this message to anyone. In such a case, you should destroy this message
and kindly notify the sender by reply e-mail.
.............................................................................

Re: Bug report for pl2303 converter (ATEN USB to serial Bridge, idVendor=067b, idProduct=23a3, bcdDevice= 1.05)

[Greg KH]

On Wed, Feb 09, 2022 at 12:13:28PM +0200, Eduard-Bogdan Budai wrote:
>  Thank you very much for your answer.
> 
> The newest kernel that is in the standard Ubuntu 20.04 repositories is
> today Linux 5.13.0-28-generic #31~20.04.1-Ubuntu SMP Wed Jan 19 14:08:10
> UTC 2022 x86_64). After moving from 5.13.0-27-generic #29~20.04.1-Ubuntu
> to the newest 5.13.0-28-generic #31~20.04.1-Ubuntu, the dmesg showed:
> 
> [Wed Feb  9 11:38:51 2022] usb 3-2: new full-speed USB device number 4
> using xhci_hcd
> [Wed Feb  9 11:38:51 2022] usb 3-2: New USB device found, idVendor=067b,
> idProduct=23a3, bcdDevice= 1.05
> [Wed Feb  9 11:38:51 2022] usb 3-2: New USB device strings: Mfr=1,
> Product=2, SerialNumber=0
> [Wed Feb  9 11:38:51 2022] usb 3-2: Product: ATEN USB to Serial Bridge
> [Wed Feb  9 11:38:51 2022] usb 3-2: Manufacturer: Prolific Technology
> Inc.
> [Wed Feb  9 11:38:51 2022] usbcore: registered new interface driver
> usbserial_generic
> [Wed Feb  9 11:38:51 2022] usbserial: USB Serial support registered for
> generic
> [Wed Feb  9 11:38:51 2022] usbcore: registered new interface driver
> pl2303
> [Wed Feb  9 11:38:51 2022] usbserial: USB Serial support registered for
> pl2303
> [Wed Feb  9 11:38:51 2022] pl2303 3-2:1.0: unknown device type, please
> report to linux-usb@vger.kernel.org
> 
> A 5.4.0-99-generic #112~18.04.1-Ubuntu SMP Thu Feb 3 14:09:57 UTC 2022
> x86_64 from a Ubuntu 18.04 recognizes the same adapter as a ttyUSB0
> (which is what is needed to be used).
> 
> Unfortunately, the environment in which happened what I described below
> has certain restrictions that don't allow me to try a newer kernel than
> the newest that is in the standard Ubuntu repositories...

I would suggest going and getting support from those that are imposing
those odd restrictions on you, as they are not allowing you to use the
hardware you need to use :(

Good luck!

greg k-h

Re: Bug report for pl2303 converter (ATEN USB to serial Bridge, idVendor=067b, idProduct=23a3, bcdDevice= 1.05)

[Johan Hovold]

On Wed, Feb 09, 2022 at 12:13:28PM +0200, Eduard-Bogdan Budai wrote:

> The newest kernel that is in the standard Ubuntu 20.04 repositories is
> today Linux 5.13.0-28-generic #31~20.04.1-Ubuntu SMP Wed Jan 19 14:08:10
> UTC 2022 x86_64). After moving from 5.13.0-27-generic #29~20.04.1-Ubuntu
> to the newest 5.13.0-28-generic #31~20.04.1-Ubuntu, the dmesg showed:
> 
> [Wed Feb  9 11:38:51 2022] usb 3-2: new full-speed USB device number 4
> using xhci_hcd
> [Wed Feb  9 11:38:51 2022] usb 3-2: New USB device found, idVendor=067b,
> idProduct=23a3, bcdDevice= 1.05
> [Wed Feb  9 11:38:51 2022] usb 3-2: New USB device strings: Mfr=1,
> Product=2, SerialNumber=0
> [Wed Feb  9 11:38:51 2022] usb 3-2: Product: ATEN USB to Serial Bridge
> [Wed Feb  9 11:38:51 2022] usb 3-2: Manufacturer: Prolific Technology
> Inc.
> [Wed Feb  9 11:38:51 2022] usbcore: registered new interface driver
> usbserial_generic
> [Wed Feb  9 11:38:51 2022] usbserial: USB Serial support registered for
> generic
> [Wed Feb  9 11:38:51 2022] usbcore: registered new interface driver
> pl2303
> [Wed Feb  9 11:38:51 2022] usbserial: USB Serial support registered for
> pl2303
> [Wed Feb  9 11:38:51 2022] pl2303 3-2:1.0: unknown device type, please
> report to linux-usb@vger.kernel.org

Apparently Ubuntu has backported

	894758d0571d ("USB: serial: pl2303: tighten type HXN (G) detection")

to their 5.13 kernel, but not yet

	aa5721a9e0c9 ("USB: serial: pl2303: fix GC type detection")

This has been fixed in all upstream stable trees since 5.15.6.

I have no idea when Ubuntu will fix this in their tree. You'll need to
ask them.

> So, in my humble opinion, we will just have to wait for the 5.16 to
> appear in the standard Ubuntu repositories.

Anything newer than 5.15.6 should do.

Johan