Hello, up till some days external camera worked fine, suddenly - after an update - not, tested camera on a laptop where it works, tested camera on my other desktop (which I do not use regularly) it worked, too - until I updated.
Got already some great help on other fora - up to now unfortunately nothing helped....
Kernel on desktop(s) is: Kernel 5.4.0-96-generic
on laptop: Kernel 5.13.0-27-generic
ls -l /dev/video0 on desktop says:
ls: Zugriff auf '/dev/video0' nicht möglich: Datei oder Verzeichnis nicht gefunden
on laptop same command
crw-rw----+ 1 root video 8, 0 Jän 31 23:58 /dev/video0
B.