Comment 23 for bug 272247

Polygon : I never did a kernel bisect myself but this requires a lot of time. You'll probably need to build and boot the linux kernel a huge amount of times. You can use the alternate CD to install intrepid on your computer, however since you get another bug which prevent you to use Xorg, that sounds like this will be specifically difficult. If you're still unable to proceed and that you need more information or help, there is Google and/or ubuntu developers in #ubuntu-devel that might be able to give you what you need. Keep in mind that doing a git bisect is far from being a easy thing, so don't discourage yourself if you don't succeed in identifying the right revision number ;-)

I wish you good luck. If you are able to identify the specific revision number of linux kernel that caused this issue, the next step is to forward this information to upstream kernel developers. I'll keep listening to this bug report.