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Disable system events from increasing the master volume

I have a laptop that I frequently use during lectures. To do so I want the sound to be turned of, hence I mute the master volume/scale it down to 0% Then when something triggers a system message like ...
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1answer
76 views

Disable volume controls in KDE / KMix Without Root Access

I'm using KDE on CentOS through a VNC session, and I never intend for any sound to be used in this session, it is always completely silent. When I have the VNC client open (in Windows) and I press ...
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138 views

Debian/xfce kmix volume

Does anyone know how to make all the audio streams update at once? At the moment, if I update the main volume control it will not update everything. ie. there is a separate stream for Chrome, VLC, or ...
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1answer
292 views

KMix shows non-functional sound card as default, no apparent way to change it

How do I change KMix's default sound card? I have "prefered" the correct one in Phonon (KDE's sound and video card configuration tool), I have selected it as the Master channel in KMix, what else can ...