Comment 42 for bug 210865

This issue appears resolved on latest Jaunty for my system (Thinkpad T42 with an Intel 82801DB-ICH4 sound card).

For people on Hardy or Intrepid, I suggest you have a look at this howto, it helped me sort out all sound problems I had: http://ubuntuforums.org/showthread.php?t=789578

Appendix C in that howto is also very useful for Jaunty users.