[alsa-devel] [ALSA] HDA: no sound in headphone-out caused by commit f889fa91ad47e (2.6.25-rc1 regression)

Matej Laitl strohel at gmail.com
Tue Feb 12 13:06:08 CET 2008

Takashi Iwai wrote:
> I wrote:
> > Thanks.  It seems that your device has two headphone jacks according
> > to the BIOS setup, and this seems to be the problem.
> >
> > Could you show the kernel messages like "autoconfig: line_outs..." for
> > both cases?  This appears when build with CONFIG_SND_DEBUG=y.
> And the patch below may fix your problem.  Give it a try.

With your patch, the sound in headphone-out is working again, but surprisingly 
the integrated loudspeakers stopped working! ;)

Also, new on/of control appeared in alsamixer - "Speaker", but unmuting it 
(and unmuting all playback controls, plugging-out headphones) didn't have an 
effect on non-working integrated loudspeakers.

Some kernel mesgs with your patch:
hda_codec: Unknown model for ALC262, trying auto-probe from BIOS...
autoconfig: line_outs=1 (0x1b/0x0/0x0/0x0/0x0)
   speaker_outs=1 (0x14/0x0/0x0/0x0/0x0)
   hp_outs=1 (0x15/0x1b/0x0/0x0/0x0)
   mono: mono_out=0x0
   inputs: mic=0x18, fmic=0x19, line=0x0, fline=0x0, cd=0x0, aux=0x0

alsa-info.sh output:


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