I can confirm this also happens in Edgy Eft Beta.. I just installed Edgy Eft onto my Thinkpad T-30 with an ATI Radeon 7500 Mobility.
All i did was an aptitude update and aptitude dist-upgrade after updating within 10 minutes the system locked up.. hopefully the fix will be in the new patches? when can we expect it to show up in the package manager -- [dapper] xrandr freezes the system (radeon, MergedFB) https://launchpad.net/bugs/47775 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
