I see the exact same error in my syslog. However, I get thrown back to the login screen after a short flicker. I changed to kde for the time being.
+1 for higher bug priority -- gtkwidget.c:5636: widget not within a GtkWindow https://bugs.launchpad.net/bugs/539440 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs