I'm not 100% sure that I'm following you, but let me tell you what I've done, according to what I've read in the bug report you've linked.
I've run a series of commands which yield the indicated output (see the attachment). In addition I've later edited the file: /etc/modprobe.d/alsa-base.conf adding the following line at the end: options snd_hda_intel index=0 model=mbp81 and reloaded alsa by running: sudo alsa reolad Nothing of this has resulted in the micro working at all. ** Attachment added: "Some commands and their output." https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1566596/+attachment/4628276/+files/someoutput -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1566596 Title: MBP 8,2 internal microphone stopped working Status in alsa-driver package in Ubuntu: Incomplete Bug description: The internal microphone doesn't work in a Ubuntu Xenial installation. The concrete model is Cirrus Logic CS4206. I've tested with the Xenial live usb (2nd beta) and it doesn't work either, so it doesn't look line I've broken something. However with the Wily live CD (both standard Ubuntu and Kubuntu) it works. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1566596/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp