i'm a bit of a luddite with sound so this might not help -i've got pusleaudio on Arch so it. seems do you mean turn on any sound or merge stereo into oner channel. i'm assuming its the last one . On the mixer gui just click on lock channels together
Open pavucontrol, go to the "Configuration" tab. Then under "Built-in Audio" select the desired profile and if mono is available on your audio device it should be selectable.
I have one speaker next to my computer which I use mostly as a headphone amplifier. On occasion I need to use it as a loudspeaker. Is it possible to quickly change the audio output from stereo to m...