I too have this bug. I tried all of the previous fixes and none worked. I am on 11.10 x64 beta 2, and I can say this problem has occurred on both of my computers and I have tried each with jockey and with apt-get, both achieving the same result.
My laptop is running an mobility radeon hd4250 and my PC is running a radeon hd 6950 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/855943 Title: Installing then uninstalling FGLRX makes Oneiric's Unity unbootable To manage notifications about this bug go to: https://bugs.launchpad.net/compiz-core/+bug/855943/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs