PulseAudio has a Even Sounds playback stream. Plasma 5's event sounds should use it because acoustic notifications are evil ;-) and I like to turn them off all at once (setting audio output to None was possible in Plasma 4's Notifications KCM but no longer in Plasma 5). Reproducible: Always Steps to Reproduce: 1. Mute Event Sounds in KMix 2. Make a warning dialog box appear (e.g. by changing something in System Settings and then select another KCM) Actual Results: *brring* Expected Results: [silence] Plasma 5.3
I don't think it's a bug in KMix but whatever component makes notification sounds. I chose the "kde" category because I don't know which component is responsible.
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