Comment 12 for bug 184314

I fixed it. Turns out I'd probably already had it fixed for sometime, but the correct modules weren't loading.

After doing what I detailed in my previous post:

I removed the directory "/lib/modules/2.6.24-17-generic/ubuntu/sound/alsa-driver". Then I created a symbolic link to "/lib/modules/2.6.24-17-generic/kernel/sound/" in its place. IE, from the /lib/modules/2.6.24-17-generic/ubuntu/sound directory: sudo ln -s ../../kernel/sound/ alsa-driver

That solved my problem. I've got my headphones working just as they should now.