notification audio volume cursor stays at 0 when you try to set it
STEPS TO REPRODUCE
i right click on "audio" icon in the systray
i select "audio volume settings"
in "audio volume" i drag the slider of "notification sound"
i release the slider then the slider return to 0
the slider stays at the position i set it
(available in About System)
KDE Plasma Version: 5.16.2
KDE Frameworks Version: 5.59.0
Qt Version: 5.13.0
opensuse leap 15.1
kde apps 19.04.2
Please close plasmashell, and try setting the notification volume from alternative pulseuadio commands (such as pavucontrol)
If this also fails then it's not a plasma bug.
No problem with pavucontrol.
But there is a surprise. Now notification sound volume works well! I can set the notification audio volume in audio settings.
It seems the object "notification audio volume" is not created and pavucontrol created it or something like that.
*** This bug has been marked as a duplicate of bug 407397 ***