Comment 10 for bug 546769

Cool that you're on the track on finding something.
So to get this into the kernel permanently, I will need the following:
 * A verification that installation of the latest snapshot do NOT solve the problem: https://wiki.ubuntu.com/Audio/InstallingLinuxAlsaDriverModules
 * Your alsa-info's to make sure you have the same hardware as the original bug reporter: https://wiki.ubuntu.com/Audio/AlsaInfo
I'll then make a test package for you to test, and upon your positive verification, will submit it upstream.