How to disable KDE system sounds? I mean all sounds on startup, on dialog box popup, on error and so on, without turning off the actual media sound.
I use KDE 4.7.4
In KDE 4.10.5, you can disable all system sounds without muting all media.
Also, you may disable Event Sounds: left click the sound tray icon and slide down the Event Sounds slider or completely mute it.
In KDE Plasma 5, you can left-click the kmix (volume) plasmoid, and turn down "Event Sounds", similarly to the screenshot above.
If this doesn't work, you can turn off the sounds for each notification class individually, in
There is a longstanding bug in KDE to disable sounds for all apps. I suggest commenting on that bug.
Then choose "No audio output."
Then choose"KDE System Notifications"