I have the same problem. I have two ATI x1950xt cards in mine. The strange part is that everything works fine until I logout even compiz and all that jazz.
** Attachment added: "Xorg.0.log" http://launchpadlibrarian.net/26949193/Xorg.0.log -- [HD3870] Logout doesn't return to GDM login prompt https://bugs.launchpad.net/bugs/366225 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs