Getting the same here, and I, occasionnaly, return back to login screen... Deleting /etc/gdm/custom.conf seemed to solve the issue ([xdmcp] and [greeter] were filled).
-- 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
