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Simple case: one application and one output device. I'm also using pavucontrol.

In Ubuntu, I could change the volume of the application or the output device without affecting the other's volume. However in Debian:

  1. When I change the device volume, the application volume scales accordingly
  2. When I change the application volume to a value greater than the current device volume, the device volume goes up too

What configuration am I missing to make it work in the old way?

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up vote 0 down vote accepted

You need to set flat-volumes=no in PulseAudio's daemon.conf configuration file.

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