Le 31/10/2015 12:19, Tanu Kaskinen a écrit :
On Sat, 2015-10-31 at 01:56 +0100, GMAIL wrote:
Hi everyone and thank you all for your efforts towards making a good
audio server for our loved platform.
_*My setup:*_
> 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?
--
Tanu
Indeed this fixes my problem, thanks!
I'm a bit confused by the comment in the .conf file though. So, despite
PA detecting the rear line out port exactly as it states, this "Element
Front" is actually part of the headphones "paths"? that is rear line out
is considered as part of "Element Front"?
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