ALSA: hda - Fix headphone noise after Dell XPS 13 resume back from S3
authorHui Wang <hui.wang@canonical.com>
Tue, 24 Nov 2015 03:08:18 +0000 (11:08 +0800)
committerTakashi Iwai <tiwai@suse.de>
Tue, 24 Nov 2015 06:33:43 +0000 (07:33 +0100)
commit8c69729b4439bbda88c3073df7243f755cc418ed
tree23fb0c741fe4f9a07fce4b0c1a1a709d5b533b81
parent196543d54574f50e3fd04df4e3048181e006a9da
ALSA: hda - Fix headphone noise after Dell XPS 13 resume back from S3

We have a machine Dell XPS 13 with the codec alc256, after resume back
from S3, the headphone has noise when play sound.

Through comparing with the coeff vaule before and after S3, we found
restoring a coeff register will help remove noise.

BugLink: https://bugs.launchpad.net/bugs/1519168
Cc: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/pci/hda/patch_realtek.c