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Commit dcd51305 authored by Hui Wang's avatar Hui Wang Committed by Greg Kroah-Hartman
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ALSA: hda/realtek - fix the pop noise on headphone for lenovo laptops

commit c4cfcf6f4297c9256b53790bacbbbd6901fef468 upstream.

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@vger.kernel.org>
Signed-off-by: default avatarKailang Yang <kailang@realtek.com>
Signed-off-by: default avatarHui Wang <hui.wang@canonical.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 52484115
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