SUMMARY STEPS TO REPRODUCE 1. Hardware >> Audio >> Playback Streams >> Notification Sounds 2. Set to 0% 3. Unsure how to trigger notification sound reliably via built in mechanisms, but trigger a notification with sound - the sound will still occur 4. Use the Mute button instead - the sound from notifications will now be prevented OBSERVED RESULT EXPECTED RESULT SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
*** This bug has been marked as a duplicate of bug 425974 ***