Actually nvidia is the issue for the white screen, compiz just exposes the bug.
** Changed in: compiz (Ubuntu) Status: New => Invalid -- Switch User freezes at blank screen https://bugs.launchpad.net/bugs/112518 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug contact for gdm in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs