This is fixed in gnome-shell 3.3.90-0ubuntu1 which you should be getting in your updates shortly. Next time I need to remember to add a breaks to the control file so it's more obvious that upgrading could break gnome- shell.
** Changed in: gnome-shell (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/955090 Title: gnome-shell crashed with SIGSEGV in _cogl_pipeline_set_parent() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/955090/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs