Important: this question How to disable microphone from auto adjusting its input volume doesn't cover this scenario.
This question is about the volume auto adjust feature of pulseaudio "module-echo-cancel".
I am using the pulseaudio module
module-echo-cancel, officially documented here.
You can enable it by editing
/etc/pulse/default.pa and adding the line:
And reseting it with
pulseaudio -k. And it works.
But the documentation doesn't inform how to disable the volume auto adjust that this module executes when it is enabled.