Which version of alsa-driver is involved here [with your recent apport-collect info]? Are you using linux-alsa-driver-modules-$(uname -r) from ppa:ubuntu-audio-dev?
Which version of alsa-driver is involved here [with your recent apport-collect info]? Are you using linux-alsa- driver- modules- $(uname -r) from ppa:ubuntu- audio-dev?