A patch has been released for ALSA 1.0.19 that fixes this issue.
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4086
See here for links to instructions of how to install this for testing.
https://help.ubuntu.com/community/MacBook3-1/Intrepid#Subwoofer%20fix
Now we need to push this fix for inclusion in 1.0.20 and Ubuntu 9.10.
A patch has been released for ALSA 1.0.19 that fixes this issue.
https:/ /bugtrack. alsa-project. org/alsa- bug/view. php?id= 4086
See here for links to instructions of how to install this for testing.
https:/ /help.ubuntu. com/community/ MacBook3- 1/Intrepid# Subwoofer% 20fix
Now we need to push this fix for inclusion in 1.0.20 and Ubuntu 9.10.