Hi Laurent, As it happens, I have two Windows machines; one with Windows 7 and another with Windows 10. Which version of Windows should I test it on, and how do I capture a USB trace in Windows? I appreciate the help! On 1/30/22 6:00 PM, Laurent Pinchart wrote: > 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!
