I could reproduce this issue with a freshly created dummy user account. I should also note that as far as I remember, I started experiencing this issue just after I upgraded my system today afternoon which involved upgrading xserver and mesa driver packages etc.
Here are the packages which got upgraded just before observing this issue: https://pastebin.com/raw/Apevt42K -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1939447 Title: Audio plays but no video in vlc To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/vlc/+bug/1939447/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
