Re: snd_hda(4): getting line-in to work

Garrett Cooper wrote:
> On Tue, Jan 6, 2009 at 12:53 PM, Alexander Motin <mav_at_freebsd.org> wrote:
>> Garrett Cooper wrote:
>>>    I'm not sure if it's user error or not, but my snd_hda(4) enabled
>>> chipset doesn't have line-in support enabled. I was wondering if there
>>> were a special set of instructions I need to follow to get this
>>> working.
>> The main instruction is to boot system with verbose messages. snd_hda writes
>> all information needed to answer most questions. Read it yourself and if it
>> does not help - send it to me.
>>
>>> [gcooper_at_orangebox /scratch/ltp]$ cat /dev/sndstat
>>> FreeBSD Audio Driver (newpcm: 32bit 2007061600/i386)
>>> Installed devices:
>>> pcm0: <HDA Analog Devices AD1988B PCM #0 Analog> at cad 0 nid 1 on
>>> hdac0  [MPSAFE] (1p:1v/1r:1v channels duplex default)
>> All I can see here is that you have some recording device. You can browse
>> and select specific recording source with `mixer =rec` command. For
>> additional details look verbose output and read new snd_hda man page.
>>
>>> pcm1: <HDA Analog Devices AD1988B PCM #1 Analog> at cad 0 nid 1 on
>>> hdac0  [MPSAFE] (1p:1v/0r:0v channels)
>>> pcm2: <HDA Analog Devices AD1988B PCM #2 Digital> at cad 0 nid 1 on
>>> hdac0  [MPSAFE] (1p:1v/0r:0v channels)
>> --
>> Alexander Motin
> 
> Trying with the instructions on the manpage actually disabled my
> sound... then again I probably screwed up the settings (I believe it
> was noted as pcm2 before??).
> 
> Here're the device.hints entries and I attached the -v boot log
> snippet for the card:

In attached log you have missed one of very interesting parts while 
grepping: pcmX devices output prints sound processing paths within codec 
for every PCM device. Look it first before doing something.

> hint.hdac.0.cad0.nid17.config="as=1seq=0 device=Headphones"
> hint.hdac.0.cad0.nid18.config="as=2seq=0 device=Line-out"
> hint.hdac.0.cad0.nid19.config="as=3seq=0 device=Speaker"
> hint.hdac.0.cad0.nid20.config="as=4seq=0 device=Mic"
> hint.hdac.0.cad0.nid21.config="as=5seq=0 device=Line-in"
> hint.hdac.0.cad0.nid22.config="as=6seq=0 device=Line-out"
> hint.hdac.0.cad0.nid23.config="as=6seq=0 device=Mic"
> hint.hdac.0.cad0.nid24.config="as=6seq=0 device=CD"
> hint.hdac.0.cad0.nid36.config="as=5seq=0 device=Line-out"
> hint.hdac.0.cad0.nid37.config="as=6seq=0 device=Line-out"

Except lack of speces between fields there is also lack of any sense. I 
don't understand what was you trying to do, but it will not work:
  - you configured nid 21 and nid 36 as association five, but made one 
of them input and other output. It is incorrect, association may include 
only pins of one direction (in/out);
  - association 6 is the same;
  - nid 19 has connectivity "None", so it will not be used by driver.
It is all described in manual.

Actually I think default configuration is quite reasonable. There is 
some things that can be tuned, but you should first understand what you 
have and how it works.

-- 
Alexander Motin