Comment 91 for bug 1201528

It might be difficult to bisect in 3.9 with a video issue. We know the issue was also introduced in a 3.8 stable update, so lets try bisecting in that tree. You confirmed 3.8.0-27 has the but, and it is based off of upstream 3.8.13.3. Can you test the following earlier upstream kernels:

3.8.13.1: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8.13.1-raring/
3.8.13.2: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8.13.2-raring/