The patched kernel posted in the comments of bug #554569 appears to correct this problem when one switches back to the default of no xorg.conf, and does not use xforcevesa or i915.modeset=0 in grub.
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/554569/comments/45
The patched kernel posted in the comments of bug #554569 appears to correct this problem when one switches back to the default of no xorg.conf, and does not use xforcevesa or i915.modeset=0 in grub.
https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/554569/ comments/ 45