Try a more recent kernel from the ppa mainline. I am currently using raring with Kernel 3.9.8 with good success. Kernels 3.8.x were producing hangchecks requiring window restarting regularly on a sandybridge based laptop. However, with the latest 3.9 or 3.10, the occasional hangcheck recovers without requiring a restart.
Try a more recent kernel from the ppa mainline. I am currently using raring with Kernel 3.9.8 with good success. Kernels 3.8.x were producing hangchecks requiring window restarting regularly on a sandybridge based laptop. However, with the latest 3.9 or 3.10, the occasional hangcheck recovers without requiring a restart.