Comment 71 for bug 465942

I have now made a small dkms package to help you verify if my theory is
correct. The dkms version disables via_dmapos_patch in all cases. Please
try the following:

* Make sure position_fix=1 is NOT present in /etc/modprobe.d/alsa-base.conf
* Make sure you don't have any alsa driver overrides installed (e g
linux-backports-modules, or the daily snapshot from ubuntu-audio-dev ppa)
* Download and install
http://people.canonical.com/~diwic/temp/alsa-intel-hda-diwic-via-dmapos-dkms_1.0.23.diwic_all.deb
* Reboot
* Test whether the error is gone or not, and report back here.

Thanks!

--
David Henningsson, Canonical Ltd.
http://launchpad.net/~diwic