I have looked a little more into the internal mic issue. The lack of speaker mixer is less of an issue because the headphone mixer and auto-detect mostly works.
I selected "Analog Stereo Duplex" as my audio profile and applied the fix in Comment #32, but my internal mic didn't appear. I edited the "analog-input-internal-mic.conf" and commented out the first section marked "This is a workaround". The microphone now appears, but doesn't record any audio.
I tried muting the right channel (to see if it was Bug #1002978), but it had no effect.
I have looked a little more into the internal mic issue. The lack of speaker mixer is less of an issue because the headphone mixer and auto-detect mostly works.
I selected "Analog Stereo Duplex" as my audio profile and applied the fix in Comment #32, but my internal mic didn't appear. I edited the "analog- input-internal- mic.conf" and commented out the first section marked "This is a workaround". The microphone now appears, but doesn't record any audio.
I tried muting the right channel (to see if it was Bug #1002978), but it had no effect.
I have attached my ALSA info file.