Got the same issue with a x700 mobility PCIE. I bypassed the problem with the next line in the xorg.conf in the DEVICE section :
Option "MonitorLayout" "LVDS, TMDS" It seems to be solved in Edgy ... Need to be confirmed ... -- [X600] Black screen with DRI https://launchpad.net/bugs/35601 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
