On Tue, 23 Jan 2018 14:10:57 +1300, I wrote:
For quite a while now, I’ve been annoyed by the system
volume going to 100% on my Debian systems, regardless of my attempts
to set it to a lower level.
I think I have finally found a fix: in your /etc/pulse/daemon.conf,
put in a line saying
flat-volumes = no
After all this time, “flat-volumes = no” is finally the default in
Debian. Did my periodic Debian Unstable upgrade today, and it told me
the config file had changed.