This is a duplicate maybe? Take a look at: https://launchpad.net/distros/ubuntu/+source/xorg/+bug/22976
-- Black screen on iMac with ATI Rage 128 Pro video card https://launchpad.net/bugs/51904 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
