Bug 490612

SUMMARY
A few months ago I reported https://bugs.kde.org/show_bug.cgi?id=484503 because I thought KAlarm play audio feature stopped working. It turns out that somehow my notification sounds volume is muted this whole time. I think KAlarm should warn the user if the notification sounds volume is muted, since it's not very obvious that it's muted. It doesn't show up in the Volume plasmoid's Applications tab (comparing to Windows showing the System sounds alongside other applications in the Volume Mixer)

STEPS TO REPRODUCE
1. Set the notification sounds volume to 0 or muted. This can be done by opening the Audio plasmoid then click "Configure Audio Device" button, which will open a Settings page where it's the only place you can see and change the notification sounds volume.
2. Create a new alarm. It can be a audio alarm or a display alarm with audio.

OBSERVED RESULT
No warning. When the alarm is triggered also no warning and no sounds coming out of the speaker.

EXPECTED RESULT
There should be a warning that the notification sounds volume is muted.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 
(available in About System)
Operating System: KDE Neon 6.0
KDE Plasma Version: 6.1.3
KDE Frameworks Version: 6.4.0
Qt Version: 6.7.0

ADDITIONAL INFORMATION
Graphics Platform: Wayland