FAQ038

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The FAQs have been reorganized. The new location of this question is FAQ#The headphones volume is independent by the master volume, so my keyboard special keys won't affect it. Is there a way to modify this behaviour?

The headphones volume is independent by the master volume, so my keyboard special keys won't affect it. Is there a way to modify this behaviour?

You can change this behaviour by indicating in the file /proc/asound/card0/oss_mixer wich is the volume channel. For example when I use internal laptop speakers I use


VOLUME "Master" 0

else


VOLUME "Headphone" 0

You can change this with a simple script like:


#!/bin/bash
STATUS=`less /proc/asound/card0/oss_mixer |grep VOLUME | awk -F " " '{print $2}'`

if [ $STATUS = \"Master\" ]
then
    echo "the volume is now controlled by the HEADPHONE"
    echo 'VOLUME "Headphone" 0' > /proc/asound/card0/oss_mixer
else
    echo "the volume is now controlled by the MASTER"
    echo 'VOLUME "Master" 0' > /proc/asound/card0/oss_mixer
fi

This script has to be run sudo since you don't have write acces to /proc/asound/card0/oss_mixer.

But I agree with you it would be better to have a key that maps both channels.