AlsaMixerFreeze

Problem

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

What's the solution

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

How to setup

# Cloning the repository and running install.sh script
git clone https://github.com/Kafels/AlsaMixerFreeze.git
cd AlsaMixerFreeze && chmod +x ./install.sh && ./install.sh

How to uninstall

chmod +x ./uninstall.sh && ./uninstall.sh

Tested environment

Ubuntu 20.04
Python 3.8

Python dependencies

os (inbuilt)
subprocess (inbuilt)

Unix dependencies:

alsactl
stdbuf

Known issues

Script dies after system suspend

Blastoise/AlsaMixerFreeze