Public bug reported: I am running gnome-session-flashback with metacity as window manager, and I have a three screen desktop driven by an Nvidia GPU.
Sporadic, when I close a window (can be any application gvim, chrome, claws-mail, gedit, etc.) the whole X11 server goes down instant and I am eventually back at the login UI. Extremely counter productive. If I revert metacity and metacity-common packages back to version 3.18.3-1ubuntu2, the behavior goes away. Only change up to latest version 3.18.3-1ubuntu3 is * Backport upstream change (add_window_back_to_compositor.diff) to fix windows getting hidden sometimes (LP: #1538111). Which sounds a bit related IMHO. I have not looked at the actual source code, both downloading the Ubuntu DEB package of version 3.18.3-1ubuntu2, or building it myself from sources works around the problem for me. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: metacity 1:3.18.3-1ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-21.37-lowlatency 4.4.6 Uname: Linux 4.4.0-21-lowlatency x86_64 NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia wl ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 CurrentDesktop: GNOME-Flashback:Unity Date: Mon Apr 25 09:15:25 2016 SourcePackage: metacity UpgradeStatus: Upgraded to xenial on 2016-03-30 (25 days ago) ** 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/1574477 Title: X11 restarts sometimes on window close when running metacity window manager To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/metacity/+bug/1574477/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs