Comment 13 for bug 1072146

Unfortunately the trick with the L/R channel muting worked (on both "Internal Microphone" and "Microphone" devices I can see in pavucontrol). I tried to install the alsa-hda-dkms .deb provided in that ticket, but it doesn't seem to install cleanly. I'm pasting the output from dpkg -i and also the referenced make.log file

Preparing to replace alsa-hda-dkms 0.1 (using alsa-hda-dkms_0.1_all.deb) ...

------------------------------
Deleting module version: 0.1
completely from the DKMS tree.
------------------------------
Done.
Unpacking replacement alsa-hda-dkms ...
Setting up alsa-hda-dkms (0.1) ...
Loading new alsa-hda-0.1 DKMS files...
First Installation: checking all kernels...
Building only for 3.5.0-17-generic
Building for architecture x86_64
Building initial module for 3.5.0-17-generic
Error! Bad return status for module build on kernel: 3.5.0-17-generic (x86_64)
Consult /var/lib/dkms/alsa-hda/0.1/build/make.log for more information.
dpkg: error processing alsa-hda-dkms (--install):
 subprocess installed post-installation script returned error exit status 10
Errors were encountered while processing:
 alsa-hda-dkms