I've got the same problem, after an upgrade from feisty to gutsy. i tried it with an empty xorg.conf, and with the two settings mentioned above to no avail. please find attached output from lspci
** Attachment added: "lspci" http://launchpadlibrarian.net/9295057/lspci.txt -- Screen displays garbage https://bugs.launchpad.net/bugs/133192 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