Know that a headset with a microphone connected to the 3.5mm jack and a USB microphone will work. Having 'Sound Settings' open causes issues when playing sounds found in:
/usr/share/sounds/alsa/
folder which has a rate of 48000Hz and are mono. The onboard mic is still an issue.
I'm testing it now and got as far as stated here. In my case, I got PulseAudio to detect the microphone by adding:
load-module module-alsa-source device=hw:2,0
above this line:
.ifexists module-udev-detect.so
in the `/etc/pulse/default.pa` file.
Here is my log file: https://paste.armbian.com/sakupisele
I added:
load-module module-alsa-source device=hw:2,0
to the `/etc/pulse/default.pa` file and pulseaudio now sees the microphone but doesn't get any input.