[lkml]   [2013]   [Feb]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Subject3.8-rc1 patch_cirrus 4.0 regression...
Hi Takashi,

The v3.8-rc kernels have regressed from v3.7 with the quad-speaker
arrangement on my Macbook Pro 10,1 - only the higher-frequency
speakers work despite the front and rear channels being exposed in the

Reverting f37bc7 [1] restored the correct behaviour ([2] was reverted
to compile, but the problem still occurs with only [2] reverted).

How can I help to debug this and find the right approach?


--- [1]

commit f37bc7a88d374448a1f4bba9267d308606d78bf2
Author: Takashi Iwai <>
Date: Thu Nov 8 15:59:23 2012 +0100

ALSA: hda - Give standard "Bass Speaker" mixer for 2.1 speakers

When two built-in speakers are found on the machine, we can suppose
it's rather a 2.1 speaker system with a bass output instead of
front/surround channels.

Signed-off-by: Takashi Iwai <>

--- [2]

commit ee81abb623cb5e03c182d16871bb4fb34fdc9b4f
Author: Takashi Iwai <>
Date: Thu Nov 8 17:12:10 2012 +0100

ALSA: hda - Apply a proper chmap for built-in 2.1 speakers

When 2.1 speakers are detected, use the corresponding channel map
instead of the standard map with front+rear surrounds.

Signed-off-by: Takashi Iwai <>
Daniel J Blueman

 \ /
  Last update: 2013-02-05 17:46    [W:0.065 / U:4.524 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site