ALSA: hda - fixup D3 pin and right channel mute on Haswell HDMI audio

Browse source

When graphics initializes the HDMI chip, sometimes this leads to
pins going into D3 and right channel being muted. If the audio driver
finishes initialization before the graphic driver does, this situation
becomes permanent.

This is a workaround that checks for this situation and corrects it on
playback prepare. It has been verified working on at least one machine.

BugLink: https://bugs.launchpad.net/bugs/1167270
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

...

This commit is contained in:

David Henningsson 2013-04-10 12:26:07 +02:00 • committed by Takashi Iwai

parent 5ead56f2da

commit 83f26ad2c9

1 changed files with 38 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

38

sound/pci/hda/patch_hdmi.c

View file