I have a rather old Logitech webcam which I have been testing on Ubuntu 18.04. The camera gets mounted automatically on /dev/video0 and I can use it via VLC ("open capture device" then specifying /dev/video0 as device). However, no other program is able to detect or use it. I have tried web browsers (Chromium), Skype and lightweight apps like Cheese and Streamer. Any ideas how to make it work generally?
lsmod | grep video:
videodev 184320 3 gspca_main,v4l2_common,gspca_spca561 media 40960 1 videodev video 45056 0