when I boot, my system volume control makes every application have half of their volume.
for example i start clementine and it shows up by 50% in Audio Volume Settings window, but system volume is set to 100%, so every system notification sounds very loud, comparing to music volume (too loud i must say lol!).
if i change clementine level back to 100 and restart it, changes are kept, but if i restart my opensuse, everything is reverted to 50%.
this issue is not clementine-only, chrome and dragonplayer have this also.
Nominally the application pavucontrol will store the volume settings on a per application basis. I believe it also allows control of sytrem volume. Have you installed pavucontrol and configured the sound levels?
In case you have tried that, and it does not work then if volume savings are not being saved after a reboot, then to quote from an alsa developer, if this happens after reboot, it’s likely the wrongly saved mixer state. There are a few layers saving/restoring the mixer state, alsactl invoked via udev, PulseAudio, and kmix (assuming kde). Its possible the latest plasma/kde-5 has another layer ? (I’m not certain).
A possible fix would be to clean up the config. Go to runlevel 3 once, login as root, kill all pending Pulse Audio processes (if any). Then adjust via “alsamixer -c0”, and run “alsactl store”. This resets the mixer restored via alsactl.
For Pulse Audio, remove ~/.pulse and ~/.config/pulse directories (if they exist).
The above was for advice for an older version of openSUSE, but dependent on the history behind your /home (with previous openSUSE versions) some of that advice may still be valid.
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