I got a ucv Quanta 0408:4035 (ACER HD User Facing), recognized but NOT inizialized in Ubuntu 22,04.01 lts (see dmesg below...)
WHERE can I found some help to modify and test some modified uvc_driver.c ?
I see that there is a proposed fix at 0408:4030 & 4034 similar camera
https://patchwork.kernel.org/project/linux-media/patch/20220617235610.321917-9-ribalda@chromium.org/
but seems to have NO connection with ubuntu source files.
I installed Ubuntu 22.04 source file, BUT sources for uvc driver.c are completely different from https://github.com/torvalds/linux/blob/master/drivers/media/usb/uvc/uvc_driver.c
here is current lsusb
https://pastebin.com/dmXGgtdV
Here the dmesg failure messages:
giuliano@Astra2A:~$ sudo dmesg | grep -i "uvc*"
[ 3.557860] usb 3-6: Found UVC 1.50 device ACER HD User Facing (0408:4035)
[ 3.590526] usb 3-6: UVC non compliance - GET_DEF(PROBE) not supported. Enabling workaround.
[ 3.595587] uvcvideo 3-6:1.1: Failed to query (129) UVC probe control : 26 (exp. 48).
[ 3.595591] uvcvideo 3-6:1.1: Failed to initialize the device (-5).
[ 3.595629] usbcore: registered new interface driver uvcvideo
[ 4.786991] nvidia_uvm: module uses symbols from proprietary module nvidia, inheriting taint.
[ 4.792497] nvidia-uvm: Loaded the UVM driver, major device number 505.
Which is the best group/forum to deal with, to find a fix and develop a new uvc driver ?
Giuliano