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# ThinkPad: Mute button

From ArchWiki

## Problem:

Mute button does not work properly on most ThinkPads and IdeaPads with a newer kernel. Two different scenarios occur:

### Nothing works

  The Button does not react at all: no led flash (some ThinkPads have an LED, indicating the Mute-State) and no effect on Speakers Volume. It only mutes, if you first press the mute button and afterwards the Vol-Down-Key.

### External Audio still on

  Pressing the button causes the speakers to mute (LED also works), but external audio is still on.

## Solution:

### Older IBM ThinkPads

  First try this: "http://www.thinkwiki.org/wiki/Mute_button"

### Nothing works:

  Edit your /etc/modprobe.d/modprobe.conf and add the following line:

    options thinkpad_acpi enabled=0 # enables Mute-Button on ThinkPads with IdeaPad-Firmware

  reboot, and go on:

### External Audio still on:

  Install tpb from the AUR and create an file "/root/.tpbrc":

    #tpb-Settings:

    CALLBACK "/root/tp-key-handler"

    OSD off

  Now create the file "/root/tp-key-handler":

    #!/bin/bash
    echo $1 $2
    if [ $1 = mute ]; then
    	if [ $2 = on ]; then
    		mset="off";
    	else
    		mset="on";
    	fi
    	sudo -u USERNAME amixer sset Master $mset; # I had to sudo to me, because I use PulseAudio
    fi

  you'll have too add execute-rights to /root/tp-key-handler:

    chmod +x /root/tp-key-handler

  Since tpb needs root-privileges as well as X, you may start it by adding "sudo tpb" in the .xinitrc and editing your sudo-Settings (use visudo) or addin "gksudo tpb" in any X-Startscript (the last will ask for an password on startup).

That's it - if you have a better Idea, please do not hesitate to edit this page!

Retrieved from "https://wiki.archlinux.org/index.php?title=ThinkPad:_Mute_button&oldid=277772"
Category:

- Lenovo

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