I also have confirmed the bug, it just happened right now, and here is the crash dump for metacity.
It feels like gnome-session is trying to restart metacity too fast, when waiting a few seconds before respawning it would avoid this problem... ** Attachment added: "_usr_bin_metacity.1000.crash" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1455916/+attachment/4492163/+files/_usr_bin_metacity.1000.crash -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1455916 Title: Xorg unexpectedly crashed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1455916/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs