Okay, good news.
One or other update has enabled the headphone functionality correctly, and I've solved the microphone issue. See my specific comment to bug #134125:
https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.22/+bug/134125/comments/6
Okay, good news.
One or other update has enabled the headphone functionality correctly, and I've solved the microphone issue. See my specific comment to bug #134125:
https:/ /bugs.launchpad .net/ubuntu/ +source/ linux-source- 2.6.22/ +bug/134125/ comments/ 6