Disable PulseAudio flat volumes to prevent it from pushing volume level to max

[Bastien Nocera]

----- Original Message -----
> On Mon, 2015-09-21 at 18:00 -0400, Owen Taylor wrote:
> > There is danger to the ears if an application assumes that 100%
> > volume
> > is a safe volume and blindly sets its volume to 100% without user
> > input. But that only affects that application - one application's
> > misbehavior never affects another application.
> 
> That's definitely not correct. With flat volumes, applications can and
> do set the system volume to 100%. I've received numerous complaints
> about this. It's particularly frustrating when watching YouTube videos,
> since YouTube sets the system volume to 1 when starting a video. We are
> still waiting for some promised "browsers API" in PulseAudio to fix
> this easily.
> 
> I think it's telling that this thread is full of complaints about flat
> volumes, with no supporters. Also, Ubuntu does not seem to be getting
> any complaints about the lack of flat volumes. :)

Given that I don't want per-app volumes either, not sure that my opinion
is required to choose between 2 schemes that are per-app.