Very similar bugs, ATI Radeon 9x00: Bug #67487 : [regression][rv280] black screen and console freeze when X starts - drm lockup: OK, also running AMD64 with ATI Radeon 9700XT and having the black screen + lockup issue on the Edgy liveCD.
Bug #67487 : [regression][rv280] black screen and console freeze when X starts - drm lockup: Failure in booting in to Live Desktop 6.10. ... Screen Goes Black after boot phase, right as it enters the Desktop phase. Must power off to remedy. ... ATI Radeon 9200 SE video card (AGP) Similar bug, other ATI Radeon: Bug #32368 : [Dapper] X11 doesn´t start (ATI Radeon X300 Mobility): With Ubuntu 6.10 DapperFlight4 (Install + LiveCD Version) X11 doesn´t work. The System crashes with a black screen. -- GDM Display refuses to initialize with ATi Card https://launchpad.net/bugs/30488 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs