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I was wondering if there was anyway that I could lock the volume control for a user because I have a computer hooked up to a sound system but if the computer does any amplification at all i.e. above 50% volume then it sounds distorted on the speakers. So I would like to lock in the computer volume at 50% for one if not all users at 50% and just use the control board its plugged into to control the volume.

And help would be awesome thanks.

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Can you hook the sound system into the Line Out? It shouldn't be affected by volume controls like the regular speaker/headphone outputs. –  Tom Feb 21 '12 at 21:56
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1 Answer

I don't know if it is possible to lock the Volume Slider, but the same effect of locking it at 50% can certainly be achieved.

Have a look at this Answer to a similar question which has been marked as 'Accepted' by its OP. According to this, to achieve the effect of capping the slider limit to 50%, we would use the value as 32768.

So, we would set the sink level using the following command in a terminal:

pacmd set-sink-volume <sink> <value>

And replace <value> with 32768; and <sink> with the sink name or sink index obtained from the following command:

pacmd list-sinks

This would achieve the effect of capping the volume slider at 50% (virtually).

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This may cap it but it wouldn't prevent the volume from being lowered, correct? –  Tom Brossman Dec 26 '12 at 19:37
    
Yes. We would be able to lower the volume as usual. –  Aditya Dec 26 '12 at 19:53
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