I'm getting the same problem with my newly upgraded gutsy. Tried 6.7.191-1ubuntu2 (with the corresponding core), to no avail. I'm attaching my xorg.conf and Xorg.0.log,
** Attachment added: "xorg.tar" http://launchpadlibrarian.net/8983579/xorg.tar -- [gutsy] system halts "Black Screen" with xserver-xorg-video-ati.1.6.6.193-1ubuntu1 https://bugs.launchpad.net/bugs/134467 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs