I belive that this bug has been fixed in the 13.04... at least for me, my audio finally works now, after being unusable for a long time and I was seeing same/similar behavior to what you saw. so give the newest version a try.
I belive that this bug has been fixed in the 13.04... at least for me, my audio finally works now, after being unusable for a long time and I was seeing same/similar behavior to what you saw. so give the newest version a try.