Comment 12 for bug 427670

Both of these laptops have node 0x0f as line-out instead of hp, which Karmic's driver does not enable for jack sensing. The latest changesets in my git branch (http://kernel.ubuntu.com/git?p=dtchen/ubuntu-karmic.git;a=shortlog;h=refs/heads/lp400682) address this issue.

I'll have kernels built by Monday EDT for testing.