auto mute audio when headphones are unplugged

Here is a nifty acpi script to mute audio when you unplug your headphones. Save it as ~/.unplug-mute.sh

  1 #!/bin/bash
  2 
  3 case "$1" in
  4     jack/headphone)
  5         case "$3" in
  6             plug)
  7                 amixer set Master unmute
  8                 amixer set Headphone unmute
  9             ;;
 10             unplug)
 11                 amixer set Master mute
 12             ;;
 13         esac
 14     ;;
 15 esac

Then edit /etc/acpi/events/headphone-plug to:

  1 event=jack/*
  2 action=~/.unplug-mute.sh %e

When the acpi events are detected for jack/* the above script will run. It will mute the audio when the headphones are unplugged and unmute it when they are plugged back in.