[pulseaudio-tickets] [Bug 90972] No sound when plugging in headphones, must unmute and raise Speker+LO to get sound

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90972

--- Comment #20 from Martin Erik Werner <martinerikwerner at gmail.com> ---
(In reply to Raymond from comment #16)
> you can use 
> 
> amixer -c 0 set 'Loopback Mixing' Disabled
> 
> 
> Simple mixer control 'Loopback Mixing',0
>   Capabilities: enum
>   Items: 'Disabled' 'Enabled'
>   Item0: 'Enabled'

When doing this the result is that there is now no output from headphones even
if Speaker+LO is manually unmuted and increased.

> 
> 
> you have to open bug report at kernel bigzilla about the aamix path always
> use first DAC when aamix mixer can connect to more than one DAC 
> 

I've opened https://bugzilla.kernel.org/show_bug.cgi?id=99931 for this.

(In reply to Raymond from comment #15)
>    0.036|   0.000) D: [pulseaudio] alsa-mixer.c: Removing path
> 'analog-output-lineout' as it is a subset of 'analog-output-speaker'.
> 
> you need a dock lineout.conf or add jack dock line out to line.conf to
> prevent Removing path 'analog-output-lineout' 

I still do not understand how to follow this instruction, I am guessing I
should add something to the files in /usr/share/pulseaudio/alsa-mixer/paths/?
Or should I create a new file named "lineout.conf" there, and what is the
content to add?

(In reply to Raymond from comment #17)
> the dirty workaround if you need loopback mixing 
> 
> http://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules/alsa/
> mixer/paths/analog-output-headphones.
> conf?id=aec811798cd883a454b9b5cd82c77831906bbd2d
> 
> remove three lines from headphone.conf
> 
> since auto mute is performed by driver 
> 
> 
> -[Element Speaker+LO]
> -switch = off
> -volume = off

Doing this stops the Speaker+LO volume from being lowered and muted thus
headphones have sound when plugged in, but if internal speakers are muted
before plugging in, it does not unmute Speaker+LO when plugging in.

I have tested using instead

[Element Speaker+LO]
switch = mute
volume = merge

Which seems to make it work and behave as I expect it to.

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