On Wed, Jan 08, 2025 at 12:32:07PM -0300, Thadeu Lima de Souza Cascardo wrote: > On Mon, Jan 06, 2025 at 02:15:24PM +0100, Tomasz Sikora wrote: > > Error in line 1034 dmesg.log > > You can see more here https://bbs.archlinux.org/viewtopic.php?id=301737 > > > > pon., 6 sty 2025 o 11:56 Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxx> > > napisał(a): > > > > > On Sun, Jan 05, 2025 at 07:31:09PM +0100, Tomasz Sikora wrote: > > > > Issue video camera > > > > ls -l /dev/video*zsh: no matches found: /dev/video* > > > > > > > > > > > > 01 15:43:24 Linux kernel: usb 3-2: Found multiple Units with ID 5 > > > > > > Can you attach complete dmesg output? And more importantly, attach the > > > output of lsusb -vv? > > > > > > Thanks. > > > Cascardo. > > > > > Thanks a lot, Tomasz. > > Without this patch (it could be an older kernel), do you see a warning in > your dmesg? Or messages like: > > [ 395.090938] usb 1-1: Failed to create links for entity 5 > [ 395.091385] usb 1-1: Failed to register entities (-22). > > Otherwise, it might just be that your kernel is not built with > CONFIG_MEDIA_CONTROLLER. > > I reached that conclusion by emulating a similar uvc device. Yours has the > entity ID for both the output terminal and processing unit. Though that is > not valid according to the spec (even UVC 1.0 mentions the IDs should be > unique), we should keep supporting such devices. > > I am currently working on a fix that will restore support for your device > but improve its support for configs with CONFIG_MEDIA_CONTROLLER. > > I appreciate your help on testing such configurations and fixes. The output of "lsusb -v -d 1c3f:2002" would help (running as root if possible). -- Regards, Laurent Pinchart
