[Raring PATCH] Ubuntu (no-up): ALSA: hda - fixup D3 pin and right channel mute on Haswell HDMI audio

[David Henningsson]

BugLink: https://bugs.launchpad.net/bugs/1167270

This patch has been tested on two machines, and found to resolve one of 
the HDMI audio issues on Haswell.

The root cause is lack of synchronisation between the video driver and 
the audio driver. Upstream wants to resolve this by adding 
synchronisation mechanisms, so they won't take this patch. But since 
kernel freeze is today, I wanted to ask you to accept this intermediate 
workaround, which at every playback start checks for the error and 
corrects it if found.


-- 
David Henningsson, Canonical Ltd.
https://launchpad.net/~diwic
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0001-ALSA-hda-fixup-D3-pin-and-right-channel-mute-on-Hasw.patch
Type: text/x-patch
Size: 2893 bytes
Desc: not available
URL: <https://lists.ubuntu.com/archives/kernel-team/attachments/20130411/a12fe96c/attachment.bin>