Hi Michaël Could you try setting quirks to 16? rmmod uvcvideo; modprobe uvcvideo quirks=16 and then try the same test (you can also try Cheese after you capture the logs) Regards! On Fri, 21 Mar 2025 at 11:49, Michaël Melchiore <rohel01@xxxxxxxxx> wrote: > > Hello Ricardo, > > This webcam is indeed connected through a KVM USB port. > > I followed your instructions with the webcam first connected through the KVM and then directly to the laptop. See the attached logs. > > Please noted I ran the command yavta -c /dev/video2 since this laptop already has an integrated webcam, registered as /dev/video0 and /dev/video1 > > Thanks for your help! > > Michaël > > > > Le ven. 21 mars 2025 à 10:56, Ricardo Ribalda <ribalda@xxxxxxxxxxxx> a écrit : >> >> Hi Michaël >> >> By looking at your dmesg.log. This sees to be the culprit: >> >> [123030.111453] uvcvideo 1-8.4:1.1: Failed to resubmit video URB (-1). >> >> Unfortunately, it happened before you enabled the trace in uvc. >> >> Could you try again but this this time do this: >> >> 1) enable trace >> 2) connect the camera >> 3) try to capture frames with yavta. >> yavta -c /dev/video0 >> 4) share the logs >> >> Also try to connect the device to a different port in your notebook, >> preferably being the only thing connected to that port. >> >> Thanks! >> >> >> >> On Thu, 20 Mar 2025 at 23:30, Michaël Melchiore <rohel01@xxxxxxxxx> wrote: >> > >> > Hi. I just want to report on a non working webcam. Details is as below >> > >> > Device details >> > >> > 1. Vendor Id / Device Id : 0bda / 5822 >> > 2. Device name : Realtek Semiconductor Corp. USB Camera >> > 3. Vendor : HP >> > >> > My laptop details >> > >> > 1. Lenovo Legion Pro 5 16IRX9 >> > 2. Linux kernel : 6.11.0-19-generic >> > 4. My operating system : Ubuntu 24.04.2 LTS >> > >> > I tried using this webcam with GMeet, Cheese and Kamoso. In all cases, >> > I get a blank screen even though the LED on the webcam lights-up as if >> > it was working: all programs seem stuck displaying a "Starting up your >> > webcam..." phase. >> > >> > As requested in the FAQ, I have attached my dmesg.log and lsusb.log >> > files. Please note this laptop has an integrated webcam which is >> > working fine. My problem is with HP HD 2300 webcam. >> > >> > Let me know if can help investigate! >> > >> > Cheers, >> > >> > Michaël >> >> >> >> -- >> Ricardo Ribalda -- Ricardo Ribalda
