If the problem happens only when running beryl that's a beryl bug, beryl is not packaged to Ubuntu yet so launchpad is not the right place for that bug, better to contact the people making the package you are using
** Changed in: totem (Ubuntu) Status: Needs Info => Rejected -- AIGLX + totem outputs a blank screen https://launchpad.net/bugs/71690 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs