Disable KDE/Plasma volume OSD/popup

0

If you use the default theme (breeze) edit:

/usr/share/plasma/plasmoids/org.kde.plasma.volume/contents/ui/main.qml

Search that 2 functions():

function increaseVolume()
function decreaseVolume()

In each function(2x) comment out:
osd.show(percent),

make it look like this:
//osd.show(percent);