Bug 435432 has a backtrace with --sync which confirms it is XGetWindowAttributes which generates this error.
-- gnome-settings-daemon crashed with signal 5 in gdk_x_error() https://bugs.launchpad.net/bugs/404924 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
