Re: mixerctl question

[beaker%sdf.org@localhost (beaker)]

RVP <rvp%SDF.ORG@localhost> wrote:

> On Sat, 6 Sep 2025, beaker wrote:
>
> > $ mixerctl -a
> > outputs.master=0,0
> > outputs.master2=120,120
> > inputs.line=0,0
> > inputs.line.mute=on
> > outputs.dacsel=DAC00,DAC02
> > record.source=ADC01,ADC03
> >
> > I've been testing the 11.x beta on an older Lenovo G550 laptop and
> > noticed mixerctl shows two outputs, output.master and output.master2.
> > Unfortunately it is the second one that is actually being used but
> > most of the mixer control apps I like to use only see /dev/mixer0
> > which is apparently bound to output.master [...]
> >
>
> Actually, /dev/mixer0 is for both outputs (DAC00 and DAC02). One DAC is
> for the headphones, the other one is for the speaker. You should be able to
> see which is which in a dmesg output (boot -vx may help more).

Ya I eventually realized this after exploring what aiomixer(1) was showing me.


> > Is there some way to swap the outputs?
> >
>
> Not without fiddling with the source I think. What you can do fairly easily
> however, is to associate both outputs with a single DAC so that plugging in
> the HPs mutes the speaker (which is what Linux does by default). I can tell
> you how if you want. (This is what most people want.)

Ya I'd be curious if doing that makes old mixers like audio/rexima usable.  The
native aiomixer is fine for my needs and for simplier stuff like volume control
I can just script mixerctl.

-B