[alsa-devel] [PATCH] ALSA: hda/realtek - fix the pop noise on headphone for lenovo laptops

[Takashi Iwai]

On Mon, 26 Nov 2018 07:17:16 +0100,
Hui Wang wrote:
> 
> We have several Lenovo laptops with the codec alc285, when playing
> sound via headphone, we can hear click/pop noise in the headphone,
> if we let the headphone share the DAC of NID 0x2 with the speaker,
> the noise disappears.
> 
> The Lenovo laptops here include P52, P72, X1 yoda2 and X1 carbon.
> 
> I have tried to set preferred_dacs and override_conn, but neither of
> them worked. Thanks for Kailang, he told me to invalidate the NID 0x3
> through override_wcaps.
> 
> BugLink: https://bugs.launchpad.net/bugs/1805079
> Cc: <stable at vger.kernel.org>
> Signed-off-by: Kailang Yang <kailang at realtek.com>
> Signed-off-by: Hui Wang <hui.wang at canonical.com>

Thanks, applied now.


Takashi