Whenever I plug in my microphone, my computer switches its source and sink to the microphone (the microphone has an aux output), but I don't want it to automatically switch either.
I tried to fix it by commenting out load-module module-switch-on-port-available in /etc/pulse/default.pa, as suggested in https://askubuntu.com/a/1061578/712826, and it seemed to work for about a week, but now it automatically switches again.
I've tried commenting out module-switch-on-connect as well, with no change.
I've run pulseaudio -k and restarted after making any changes.
The relevant part of /etc/pulse/default.pa is here:
### Should be after module-*-restore but before module-*-detect
#load-module module-switch-on-port-available
Use hot-plugged devices like Bluetooth or USB automatically (LP: #1702794)
#.ifexists module-switch-on-connect.so
#load-module module-switch-on-connect
#.endif
I've also confirmed that the modules are correctly not loaded:
$ pactl unload-module module-switch-on-port-available
Failed to unload module: Module module-switch-on-port-available not loaded
$ pactl unload-module module-switch-on-connect
Failed to unload module: Module module-switch-on-connect not loaded
Operating System: Ubuntu 20.04.1 LTS
Kernel: Linux 5.4.0-58-generic
PulseAudio version: 13.99.1
