Linux Media Controller development
 help / color / mirror / Atom feed
* An unsupported UVC device
@ 2021-02-27 10:02 Zhengyang Feng
  2021-02-28  9:38 ` Andy Shevchenko
  0 siblings, 1 reply; 6+ messages in thread
From: Zhengyang Feng @ 2021-02-27 10:02 UTC (permalink / raw)
  To: linux-media

[-- Attachment #1: Type: text/plain, Size: 1735 bytes --]

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.

-- 
Yours sincerely,
Zhengyang

[-- Attachment #2: printed_logs.zip --]
[-- Type: application/x-zip-compressed, Size: 28785 bytes --]

^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2021-03-01  2:59 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2021-02-27 10:02 An unsupported UVC device Zhengyang Feng
2021-02-28  9:38 ` Andy Shevchenko
2021-02-28 11:06   ` Mauro Carvalho Chehab
2021-02-28 13:25     ` Laurent Pinchart
2021-03-01  2:46       ` Zhengyang Feng
2021-03-01  2:58         ` Laurent Pinchart

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox