In this case, the problem was that the soundcard’s master volume was regularly turned to mute by a program (specifically, ABUS DigiProtect 0900 Server). There had to be found a way how to keep it unchanged, and to turn it on automatically on system start.
We finally used “VolumeLock“; it is written for exactly that style of problems, and it was the perfect solution to the problem here.
- Try out “Power Mixer“; it includes a scheduler and command line options that come in handy here.
- Try out “IndieVolume” from; it lets you configure per-app audio volume.
- Try out “ZVolume Pro“; it includes command line control.
- Try out NoiseNakPlus; which is an advanced volume control.
- Perhaps “wxmixer” has some command line options that might help here, but that’s rather improbable.