Happens with latest edgy (updated a few minutes before this post) on a laptop with a Geforce Go 7600.
-- [upstream] nvidia-glx doesn't restore state on NV35/NV36 cards. Causes random mess on screen or system hang. https://launchpad.net/bugs/32389 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
