Comments indicate that the kernel problem is fixed with recent Edgy builds. Please file a separate report under the xorg package if there is a problem with X configuration.
** Changed in: linux-source-2.6.17 (Ubuntu) Status: Needs Info => Fix Released -- iMac G5 will freeze after booting up https://launchpad.net/bugs/23445 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs