Comment 6 for bug 456769

There were a few lines from the Alsa 1.0.22 change log that sounded like they might resolve some or all of the issues I was seeing with my laptop.

Change log: http://www.alsa-project.org/main/index.php/Changes_v1.0.21_v1.0.22

In particular:
ALSA: hda - Unmute docking line-out as default with AD1984A codec
ALSA: hda - Add missing GPIO initialization for AD1984A laptop model
ALSA: hda - Add support of docking auto-mute/mic for AD1984A laptop model
ALSA: hda - Fix LED GPIO setup for HP laptops with IDT codecs
ALSA: hda - Fix mute-LED sync on HP laptops with IDT92HD83xxx codecs
ALSA: hda - Enable GPIO control for mute LED on HP systems

I'm not completely sure which of the last three might apply to our specific laptop, but chances are this laptop's sound will work better in 2.6.33 (b/c that kernel will have this version of Alsa).