Audio levels magically changing after upgrades (from Debian 8 -> 9 -> 10)
David Cameron - IRLP
I have solved a number of these issues by issuing a set of commands, but for some reason people can't seem to find the commands. The problem is there is a new process that runs all the time called alsactl as a system service. All it is doing is creating a disservice.
Here are the commands to make sure it will not come back (as root):
systemctl mask alsa-restore
systemctl mask alsa-store
systemctl mask alsa-state