there is one bug reported here https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1885259, my kernel version is 5.11.0-22-generic now, so the fix mentioned there should not help for my problem here.
** Summary changed: - C922 Pro Stream Webcam can not work Ubuntu 21.04 + Logitech C922 Pro Stream Webcam can not work Ubuntu 21.04 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1936201 Title: Logitech C922 Pro Stream Webcam can not work Ubuntu 21.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1936201/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
