In some programs it's possible to set the audio output volume above 100%. It seems to be supported by Pulseaudio up to ridiculous amounts. How can I fix this so 100% is the absolute limit?

Rationale: More than 100% is stupid, breaks sound completely (unless you have some other serious problem with your audio which you are trying to fix this way {don't do it like this}) and recently it was set too high even at boot time.

Related: Setting up maximum volumes even lower than 100% (no answer so far) and setting the volume even higher.

  • Your question is fair, but what about when you want to play music which (due to being recorded at too low of a gain) never exceeds a certain amplitude in the recording? You can play back at greater than 100% volume to "fix" that. – Celada Nov 23 '16 at 22:03
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    @Celada Adding Replay Gain information to the file would be one way, or re-encoding it already normalized. Ideally, you'll go complain to the person who mastered that track and tell them they did a poor job. Personally I'm using an external audio input/output device which has physical loudness knobs which I usually turn to change volume, leaving the digital setting permanently at 100% (unless I accidentally set it to more than 100% and get nothing but noise... -.-). – Nobody Nov 23 '16 at 22:12

On Ubuntu 16.04, whether the volume slider allows setting the volume above 100% is controlled by the following dconf key. Run the following command to disallow setting the volume above 100%. Change takes effect immediately.

gsettings set com.ubuntu.sound allow-amplified-volume false

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