Comment 14 for bug 715096

I tried the kernel grub parameter "i915.modeset=0" and left my machine for a day, and got no lockup/hang, when i would normally get atleast get one.however it couldnt start gnome-shell and went straight into fallback mode.

i am also trying http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.39-rc3-natty/ as bryce suggested, and it booted without issue, some flickering however during boot, i have been using that kernel, without the above kernel parameter, and no gpu lockup/hang now after 4 hours. and gnome-shell started without issue.