Downgrading xserver-xorg-video-ati from 1:6.6.3-2ubuntu3 to1:6.6.2-0ubuntu6 gives a more usuable workaraound.
-- X fails on boot https://launchpad.net/bugs/93271 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
