Comment 87 for bug 1111884

(In reply to comment #46)
> I tried to fix this a few months ago but failed. If someone with the right
> skills and time want to have a look at this problem, I'd be happy to give
> away a laptop with this chipset. Shipment cost on me. I can prepare a linux
> installation with sources of the kernel at the regression point. Contact me
> if you are up to the task.

Don't do that.

Read here: https://wiki.ubuntu.com/Kernel/KernelBisection
If you can follow those Ubuntu-specific instructions, that will narrow down the problem.

If you can't follow those instructions, have you filed a Launchpad bug? If so, please post the link or bug # (double-check that it's a public bug or say it's private).