Re: An unsupported UVC device

[Mauro Carvalho Chehab <mchehab@kernel.org>]

Em Sun, 28 Feb 2021 11:38:32 +0200
Andy Shevchenko <andy.shevchenko@gmail.com> escreveu:

> +Cc: maintainers / UVC maintainers
> 
> 
> On Sat, Feb 27, 2021 at 12:04 PM Zhengyang Feng <zyfeng97@gmail.com> wrote:
> >
> > Dear maintainers,
> >
> > I'm resending this because the previous email was not clear and should
> > be ignored. Sorry for the inconvenience caused.
> >
> > I was using HIK DS-U14 2K camera on Ubuntu 20.04 with built-in MIC
> > (but it has only one USB cable) but it seems unsupported. It
> > does not need a driver to be used on Windows (usable by just plugging
> > in).
> > I see no HIK devices on the support list
> > (http://www.ideasonboard.org/uvc/), but when I run lsusb -d 2bdf:0281
> > -v | grep "14 Video" it does output several lines like these:
> >
> > bFunctionClass         14 Video
> > bInterfaceClass        14 Video
> > bInterfaceClass        14 Video
> > bInterfaceClass        14 Video
> > bInterfaceClass        14 Video
> >
> > It also says "Couldn't open device, some information will be missing".
> > But it does not require a driver to work on Windows, so it should be a
> > normal UVC device right?
> >
> > I observed that it is not supported as a camera, because although I
> > see /dev/video0 and /dev/video1 (quite odd since it is only 1 camera),
> > it fails by either OpenCV (cv2.VideoCapture(id)) or `cheese`, where it
> > says "cannot open by index" (I tried both video0 and video1).
> > Then I got the logs with `cheese`, in the zip file attached. I think since the
> > device is quite new on the market, maybe you guys haven't tested it.
> >
> > BTW, I installed the latest from
> > https://git.linuxtv.org/media_build.git before I generated the logs.
> > The camera shows same behavior before and after I installed the latest
> > version. And the USB connection works fine (I can use other cameras on
> > this machine), also the camera itself is fine (tested on Windows machines).
> >
> > Feel free to tell me this is unrelated to the project/this mailing
> > list, in that case I'll just
> > get another camera.

It sounds to me that there's something broken on this camera's
descriptors, with the USB cable or with the USB stack.

It sounds very weird to my eyes to see errors when getting
the device descriptors like those:

	Bus 001 Device 007: ID 2bdf:0281 SN0002 HIK 2K USB CAMERA
	Device Descriptor:
	  bLength                18
	  bDescriptorType         1
	  bcdUSB               2.00
	  bDeviceClass          239 Miscellaneous Device
	  bDeviceSubClass         2 
	  bDeviceProtocol         1 Interface Association
	  bMaxPacketSize0        64
	  idVendor           0x2bdf 
	  idProduct          0x0281 
	  bcdDevice           11.00
	  iManufacturer           1 (error)
	  iProduct                2 (error)
	  iSerial                 3 (error)

The Kernel probe also has similar troubles:

	[   31.553926] usb 1-1: Found UVC 1.00 device HIK 2K USB CAMERA (2bdf:0281)
	[   32.065510] usb 1-1: Failed to query (GET_INFO) UVC control 11 on unit 1: -110 (exp. 1).
	[   32.577665] usb 1-1: Failed to query (GET_INFO) UVC control 12 on unit 1: -110 (exp. 1).
	[   33.089610] usb 1-1: Failed to query (GET_INFO) UVC control 2 on unit 2: -110 (exp. 1).
	[   33.601620] usb 1-1: Failed to query (GET_INFO) UVC control 3 on unit 2: -110 (exp. 1).
	[   34.113672] usb 1-1: Failed to query (GET_INFO) UVC control 7 on unit 2: -110 (exp. 1).
	[   34.625635] usb 1-1: Failed to query (GET_INFO) UVC control 8 on unit 2: -110 (exp. 1).
	[   35.137673] usb 1-1: Failed to query (GET_INFO) UVC control 10 on unit 2: -110 (exp. 1).
	[   35.649581] usb 1-1: Failed to query (GET_INFO) UVC control 5 on unit 2: -110 (exp. 1).
	[   36.161693] usb 1-1: Failed to query (GET_INFO) UVC control 11 on unit 2: -110 (exp. 1).
	[   46.401833] usb 1-1: UVC non compliance - GET_DEF(PROBE) not supported. Enabling workaround.
	[   51.460664] uvcvideo 1-1:1.1: Failed to query (129) UVC probe control : -110 (exp. 26).
	[   51.460672] uvcvideo 1-1:1.1: Failed to initialize the device (-5).
	[   61.656435] usb 1-1: 3:1: usb_set_interface failed (-110)
	[   71.885237] usb 1-1: 3:1: usb_set_interface failed (-110)
	[   77.003565] usb 1-1: 3:1: usb_set_interface failed (-110)
...
	[ 2022.115559] usb 1-1: 3:1: usb_set_interface failed (-110)


Are you using any proprietary driver or had applied any patch/driver
to the Kernel?

Can you try testing it with vanilla Kernel 5.10?

Thanks,
Mauro