See the link below for details, the Linux kernel version is not listed because it is a developer kernel v3.8.0-6.13. Looking for xorg fixes via altered kernels. https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1114370
Seems to be an ACPI firmware bug.
Someone suggested changing the acpi boot settings in grub would fix the problem. I haven't tested it yet, but plan to sometime today or tomorrow.
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