Problem

Every application where uses microphone (Discord, Google Hangouts, Microsoft Teams, etc.) changes the current settings of alsamixer without your permission. Example:

What's the solution

The alsactl.sh script listens alsactl monitor events. When an event is trigger, it means something tried to change the configuration and this script runs automatically alsactl restore to return the custom configuration.

Available commands

# Install
sudo make install

# Uninstall
sudo make uninstall

# Pause
sudo make stop

# Start
sudo make start

Tested environments

• Ubuntu 20.04
• Ubuntu 21.04

Unix dependencies:

• alsactl
• stdbuf
• systemctl

Known issues

• It stops after system suspend
• If you have multiple microphones (headset, laptop's microphone, etc.) and change from one to another, it stops