Newer version Ubuntu doesn't support amd gpu (https://help.ubuntu.com/community/RadeonDriver). Beside It's nor xorg but seems a mesa bug (tearfree bug). Which version have you upgraded from? Can you attach the xorg log?
Workarounds: Try cleaning files in ~/.config/compiz-1/, ~/.compiz and ~/.cache/compizconfig-1/. But take a backup first. If that didn't help try downgrading mesa. See https://askubuntu.com/questions/992571/ (Option 2 Downgrade the mesa- packages) https://wiki.archlinux.org/index.php/ATI has some performance tweaks. You can try those. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1750583 Title: Broken panel and launcher - all black To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1750583/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
