Ubuntu – Command to unmute and maximize volume

Ubuntu – Command to unmute and maximize volume

alsacommand linesound

I need to mute/unmute from the command line.
I found out that I can do it with:

amixer sset Master mute
amixer sset Master unmute

the problem is that the command for unmute is not working (as described also in this bug report: https://bugs.launchpad.net/ubuntu/+source/alsa-utils/+bug/878986)

My question is: is there another way to obtain the same result, taken that amixer is not working?

Furthermore, if I set manually the volume to minimum and then call

amixer sset Master 100%

the volume increases but doesn’t switch to maximum, even if the stdout tells:

Simple mixer control 'Master',0
Capabilities: pvolume pswitch pswitch-joined penum
Playback channels: Front Left - Front Right
Limits: Playback 0 - 31
Mono:
Front Left: Playback 31 [100%] [0.00dB] [on]
Front Right: Playback 31 [100%] [0.00dB] [on]

Can anybody help me with this?

Best Answer

  • Try the following commands in a terminal

    amixer -c 0 set Master playback 0% mute
    amixer -c 0 set Master playback 100% unmute
    

    This should ensure all outputs are controlled. It’s likely with your posted commands the reason the volume is not 100% is that the amixer does not release all outputs eg headphones or any other sound outputs at the same time.

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