[pulseaudio-tickets] [Bug 105654] Unable to properly switch between Speakers and Headphones (has "workaround")

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105654

--- Comment #5 from Tanu Kaskinen <tanuk at iki.fi> ---
Sorry for the misundertanding.

This is not a kernel driver bug. Or it kind of is, but I don't think it will be
fixed. There is a general design problem with snd_hda_intel, as it doesn't
specify whether the "Front" mixer element applies to the headphone output or
not. On some machines it does, on your machine it doesn't. PulseAudio doesn't
mute the Front element when using the headphone port, because that would result
in no audio on some machines.

As a workaround you can edit
/usr/share/pulseaudio/alsa-mixer/paths/analog-output-headphones.conf. Change
this

    [Element Front]
    switch = mute
    volume = zero

to

    [Element Front]
    switch = off
    volume = off

We should add special configuration for you hardware so that it works out of
the box.

Some details for my own reference:

Motherboard and audio codec:
ASRock B75M-DGS R2.0 (5.1 CH HD Audio (Realtek ALC662 Audio Codec))

udev identification:
ATTRS{subsystem_vendor}=="0x8086", ATTRS{subsystem_device}=="0x1e20"

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