Comment 86 for bug 1218004

Thanks, Brian. I'll take a closer look at the bisect results to make sure everything is correct.

In the meantime, could you test the latest mainline kernel, which is v3.12-rc1:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-rc1-saucy/

It's worth a shot to see if this is already fixed.