[PATCH] ALSA: hda/realtek: Headphone volume is controlled by Front mixer

[Takashi Iwai]

On Sat, 22 May 2021 05:47:41 +0200,
Hui Wang wrote:
> 
> On some ASUS and MSI machines, the audio codec is alc1220 and the
> Headphone is connected to audio mixer 0xf and DAC 0x5, in theory
> the Headphone volume is controlled by DAC 0x5 (Heapdhone Playback
> Volume), but somehow it is controlled by DAC 0x2 (Front Playback
> Volume), maybe this is a defect on the codec alc1220.
> 
> Because of this issue, the PA couldn't switch the headphone and
> Lineout correctly, If we apply the quirk CLEVO_P950 to those machines,
> the Lineout and Headphone will share the audio mixer 0xc and DAC 0x2,
> and generate Headphone+LO mixer, then PA could handle them when
> switching between them.
> 
> BugLink: https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/1206
> Cc: <stable at vger.kernel.org>
> Signed-off-by: Hui Wang <hui.wang at canonical.com>

Thanks, applied.


Takashi