Comment 37 for bug 588031

@DavidH: I reinstalled alsa-intel-hda-optiplex-dkms, rebooted, and now the modinfo command shows correctly:

$ modinfo snd-hda-codec-realtek
filename: /lib/modules/2.6.32-24-generic/updates/dkms/snd-hda-codec-realtek.ko
description: Realtek HD-audio codec
license: GPL
alias: snd-hda-codec-id:10ec*
srcversion: DAF5799F83DD538785AD1C4
depends: snd-hda-codec,snd
vermagic: 2.6.32-24-generic SMP mod_unload modversions

I think in my previous post, I had already uninstalled alsa-intel-hda-optiplex-dkms and gone back to the hda-verb workaround before posting the output of the modinfo command.

Now for the bad news: I still have the symptoms I reported above: The front panel headphone jack has sound, but the external speaker jack is not muted when headphones are plugged into the front panel headphone jack.

Fyi, because of the failure of your dkms modules to fix the problem, I have once again uninstalled alsa-intel-hda-optiplex-dkms and gone back to the hda-verb workaround.