[SRU][B/OEM-B/C/D][PATCH 0/1] audio output has constant noise on a Dell machine

Hui Wang hui.wang at canonical.com
Tue Jan 8 06:28:11 UTC 2019

BugLink: https://bugs.launchpad.net/bugs/1810891

the audio output (headpohne, lineout and internal speaker) has constant
noise when playing sound.

Set the pin configuration and some secret coeff registers, the noise
disappears. This patch is written by Realtek engineer and is upstreamd

[Test Case]
play sound via internal speaker, lineout and headphone, no noise anymore.

[Regression Potential]
Very low, this patch is upstreamd for a while, no regression is reported.

Kailang Yang (1):
  ALSA: hda/realtek - Fixed headphone issue for ALC700

 sound/pci/hda/patch_realtek.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)


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