Nevermind, that turned out to be a red herring, using the latest linux
release candidate along with some bleeding edge versions of packages
solves both the audio and the microphone!
https://github.com/thesofproject/linux/issues/4879
** Bug watch added: github.com/thesofproject/linux/issues #4879
I think sof-mtl-rt711-4ch.tplg and sof-mtl-rt711.tplg aren't the same
thing. I'm guessing the former is for devices with four audio channels?
I'm on arch with a sof-mtl-rt711-4ch.tplg and another file beginning
with "sof-mtl-rt711", but no "sof-mtl-rt711.tplg". Renaming either of
them to sof-mtl-rt
