Public bug reported: 1) sudo apt-get install gnome-session-flashback
2) Logoff and switch to "Gnome Flashback Metacity" session 3) right-click for desktop background, white block is shown out of menu border My GPU is NVdia GTX 850M This problem is caused under Ubuntu 16.04 Dev ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: metacity 1:3.18.1-1ubuntu2 ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6 Uname: Linux 4.2.0-19-generic x86_64 ApportVersion: 2.19.2-0ubuntu6 Architecture: amd64 CurrentDesktop: GNOME-Flashback:Unity Date: Mon Nov 23 06:43:44 2015 JournalErrors: Error: command ['journalctl', '-b', '--priority', 'warning'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system. Users in the 'systemd-journal' group can see all messages. Pass -q to turn off this notice. No journal files were opened due to insufficient permissions. SourcePackage: metacity UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: metacity (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1518780 Title: Metacity with composite rendering error for GUI menu border To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/metacity/+bug/1518780/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs