From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: Zhengyang Feng <zyfeng97@gmail.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Linux Media Mailing List <linux-media@vger.kernel.org>
Subject: Re: An unsupported UVC device
Date: Sun, 28 Feb 2021 11:38:32 +0200 [thread overview]
Message-ID: <CAHp75VftsNoroK3-fKaR5VGsbh-2dahPEM650+Sw880jPFD9dQ@mail.gmail.com> (raw)
In-Reply-To: <CAK80=wMNP=1DPi=4G3ONxjLUm+5Kqv7YULcr85QHd85P_5aktA@mail.gmail.com>
+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.
>
> --
> Yours sincerely,
> Zhengyang
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2021-02-28 9:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-27 10:02 An unsupported UVC device Zhengyang Feng
2021-02-28 9:38 ` Andy Shevchenko [this message]
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
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