Run gksu, enter password, press ok, watch screen. The gksu dialog is displayed ok, and the desktop is ok when gksu has finished, but briefly during the unfade you can see that the second head was unfaded first.
It's a very minor problem. -- Xinerama problem with log out and unlock dialogues https://launchpad.net/bugs/67919 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
