@Jean,

You mentioned Bluetooth audio, that remind me that the testing alsa-lib
in the #66 has some problem, I just fixed it and uploaded a new version
to it, please try it. And testing alsa-lib is not SRUed yet, I plan to
SRU it with this bug: #1868210.


And Because the pulseaudio+ucm works greatly different from pulseaudio+non-ucm, 
most pulseaudio+ucm machines are headless embedded systems, it can't work as 
well as pulseauido+non-ucm on desktop system. To support the internal mic, 
Intel provided this ucm. If you prefer pulseaudio+non-ucm, you could add 
"options snd-hda-intel dmic_detect=0" in the /etc/modprobe.d/alsa-base.conf.

With the ucm, the internal mic and headset-mic belong to different
sources, and all output devices and input devices separate to different
profiles, that makes the auto-selection/switch among audio devices
nearly not work. And if you manually select an output device which is
not in the current profile, and two or more input devices are in the new
profile, you will see input device is changed when you select output
device. This is a pulseaudio bug maybe, if pulseaudio has fix, I will
backport it.

About the issue on google meet, it is a problem, do you also meet the
similar issue on other audio apps?

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https://bugs.launchpad.net/bugs/1859754

Title:
  [SRU] add ucm to make alsa/sof driver work under PA (variants of
  Lenovo X1 Carbon 7th, Dell cnl and cml machines)

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