[pulseaudio-discuss] [BUG?] I get a profile with 2 outputs, but if I mute headphone it mutes both ports

[Raymond Yau]

> >
> >  > Desktop
> >  > Arch Linux
> >  > PulseAudio 7.1
> >
> > Using motherboard embedded sound system.
> >
> > _Rear:_ 3 regular jacks: red, green, blue
> > -> Red jack: Mic connected
> > -> Green Jack: Main speakers (Stereo)
> >
> > _Front:_ 2 regular jacks: Mic and Headphones
> >
> > Also, monitors speakers connected through HDMI to NVIDIA GTX 780.
> >
> > _*Goal:*_ This may not be straight forward from the title but I want
> > to
> > be able to listen to my headphones *only*. Currently, this is not
> > possible unless I turn off my speakers.
> >
> > _*Initial situation: *__*
> > *_
> > Sound goes through speakers only, all good.
> >
> > _*What I do:
> >
> > *_I plug in my headphones.
> >
> > Sound goes through speakers only, all good.
> >
> > I go into PAVU, switch from "Line Out" to my headphones in front of
> > "Port" under the MOBO sink name in "Output Devices".
> >
> > _*What happens:*_
> >
> > The sound now goes through BOTH my speakers AND my headphones while I
> > expect it to be output only to my headphones.
> >
> > _*What I try:*_
> >
> > I switch back to Line Out port.
> >
> > Sound goes through speakers only, all good.
> >
> > I mute Line Out port. It mutes instantly, all good.
> >
> > I switch again to my headphones: Sound goes through *BOTH* my
> > speakers
> > *AND* my headphones**again.
> >
> > I switch back to the Line Out port: it is still muted, no sound from
> > either speakers or headphones.
> >
> > I switch to my headphones: faulty behaviour continues, sound through
> > all
> > ports, speakers and headphones alike.
> >
> > I switch back to Line Out port and unmute it: sound goes through the
> > speakers only, normal.
> >
> > I switch to the headphones: sound output through both speakers and
> > headphones.
> >
> > I mute the headphones port: no sound through either the speakers or
> > the
> > headphones. Both ports are muted.
> >
> > _*Questions:*_
> >
> > Is this expected behaviour?
> >
> > How do I have the sound go through the selected port ONLY?
> >
> > Thanks in advance for your help.
>
> I suspect that the "Front" volume and mute elements can be used to
> control the line out without affecting the headphones. The problem is
> that PulseAudio's alsa configuration assumes that the "Front" element
> affects both line out and headphones (there's a comment saying that "on
> some machines Front is actually a part of the Headphone path").
>
> /usr/share/pulseaudio/alsa-mixer/paths/analog-output-headphones.conf
> contains this:
>
>     [Element Front]
>     switch = mute
>     volume = zero
>
> If you change that to
>
>     [Element Front]
>     switch = off
>     volume = off
>
> does that fix the problem for you?

Default sink name: alsa_output.pci-0000_00_1b.0.analog-stereo.vsurroundsink
Default source name: alsa_output.pci-0000_01_00.1.hdmi-stereo.monitor

Any reason for you to use vsurroumdsink?
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