I also have a GeForce 8600 GT. I recently reverted to version 290.10 of nvidia's binary driver because of Bug #973096 (random Xorg crashes.)
The reversion also seems to have solved my problems powering off the system and changing to tty. It might be a coincidence, though. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-session in Ubuntu. https://bugs.launchpad.net/bugs/987220 Title: System does not power off reliably when "Shut Down" chosen from GUI To manage notifications about this bug go to: https://bugs.launchpad.net/indicator-session/+bug/987220/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs