Comment 85 for bug 1859754

@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?