@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. -- [Realtek ALC269] no sound on external speaker jack (Optiplex 980) https://bugs.launchpad.net/bugs/588031 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs