[alsa-devel] 5.1 surround on 3 jacks (retasking)

Takashi Iwai tiwai at suse.de
Mon Aug 30 09:51:21 CEST 2010

At Sun, 29 Aug 2010 03:08:36 +1200,
Keith Chew wrote:
> > Answering as a layman - make sure there are no other volume controls you
> > need turn up. There is also the -10 dBv <=> +4 dBu difference, could be
> > that your old card had the other voltage reference. Other than that, I
> > don't know.
> Thank you very much for your quick response. I have actually made
> progress. Using hda_analyzer, I have changed the pin ctls to be OUT
> and HP, instead of just OUT. I read from the Intel doc that setting a
> pin to HP will enable an output amplifier. True enough, this gave a
> boost to the volume, it is close enough to the soundblaster's volume.
> Now I am back to trying to figure out how to set the HP in the
> user_pin_configs hex value. Do you have any documentation references
> on how to set the hex value for user_pin_configs? I have tried to
> Google for it, and also tried to find it from Intel's website, but to
> no avail.

This is nothing but the raw 32 bit values the codec chip will take.
Refer to "default pin configuration" in HD-audio specification.
Definitions can be found in hda_codec.h, too (AC_DEFCFG_*).


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