Comment 34 for bug 964231

Ok, I've started a reverse bisect on this to find where it was fixed (hence why the good and bad results below are inverted) and it will take approximately 10 steps. Can you try this kernel first and see if it works properly?

http://kernel.ubuntu.com/~sarvatt/lp964231/bisect1/

git bisect start 'drivers/gpu/drm'
# good: [28a33cbc24e4256c143dce96c7d93bf423229f92] Linux 3.5
git bisect good 28a33cbc24e4256c143dce96c7d93bf423229f92
# bad: [19f949f52599ba7c3f67a5897ac6be14bfcb1200] Linux 3.8
git bisect bad 19f949f52599ba7c3f67a5897ac6be14bfcb1200