using dreemurrs distro; callee cannot hear me after full upgrade.

[apink]

I'm not sure if this is hamdled by alsa usm profiles or pulseaudio/pipewire profiles.

Check the alsa ucm profiles under /usr/share/alsa/ucm2/ to see if it matches the change you're seeing. If so you can edit the profile to something that suits you, but it'll get reverted the next time there's an update to the package that installed it.

https://wiki.postmarketos.org/wiki/Alsa_UCM

Thank you.  I adjusted the capture in the alsa ucm and that solved it; until as you say, a package update sets it wrong. 
But now I know where to configure it.

Thank you all.  ADC Capture Volume seems to be the key.