Hi Mohammad, On Sun, Jan 30, 2022 at 12:12:53PM -0600, Mohammad wrote: > Is there a way around this problem? Would I have to reach out to the > device manufacturer? If you have access to a Windows machine, it could be useful to check if it works there. If it doesn't, the device is likely faulty. If it does, then a debugging session would be required, which could involve capturing a USB trace when using the camera under Windows, to figure out what is different between Windows and Linux. > On 1/28/22 4:47 AM, Laurent Pinchart wrote: > > On Fri, Jan 28, 2022 at 09:31:43AM +0100, Ricardo Ribalda wrote: > >> I received out of list the dmesg output from Mohammad > >> > >> It looks like a hardware error to me: > >> > >> [ 48.729618] iTCO_wdt: unable to reset NO_REBOOT flag, device disabled by hardware/BIOS > >> [ 48.749361] uvcvideo: Found UVC 1.00 device j5 WebCam JVCU100 (0711:3108) > >> [ 48.751876] uvcvideo: Failed to query (129) UVC probe control : -32 (exp. 26). > > > > A GET_CUR failure on the video probe control is indeed fairly bad. If I > > had to guess, I would suspect either an issue at the USB level, or a > > firmware bug in the webcam. > > > >> [ 48.751879] uvcvideo: Failed to initialize the device (-5). > >> [ 48.751930] usbcore: registered new interface driver uvcvideo > >> > >> On Wed, 26 Jan 2022 at 17:23, Ricardo Ribalda wrote: > >>> Hi Mohammad > >>> > >>> Could you share the output of dmesg when you connect the device? > >>> > >>> And also lsusb -vvvv -d 0711:3108 > >>> > >>> > >>> Thanks! > >>> > >>> On Wed, 26 Jan 2022 at 17:20, Mohammad wrote: > >>>> Greetings, > >>>> > >>>> I have been trying to use the j5 WebCam JVCU100 on Linux and it doesn't > >>>> function properly. Cheese cannot seem to find it, and I did not see it > >>>> listed on your list of supported devices, so I thought I would bring it > >>>> to your attention. Here is what I see from running lsusb: > >>>> > >>>> Bus 001 Device 006: ID 0711:3108 Magic Control Technology Corp. j5 > >>>> WebCam JVCU100 > >>>> > >>>> Also, running lsusb -d 0711:3108 -v | grep "14 Video" returns > >>>> > >>>> Couldn't open device, some information will be missing > >>>> bFunctionClass 14 Video > >>>> bInterfaceClass 14 Video > >>>> bInterfaceClass 14 Video > >>>> bInterfaceClass 14 Video > >>>> bInterfaceClass 14 Video > >>>> > >>>> So, looks like the Linux UVC driver at least recognizes the webcam. > >>>> Please let me know if you can help with this, thanks! -- Regards, Laurent Pinchart
