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: printed_logs.zip>>
