Re: [Alsa-user] HDA Intel Input source 'Mix' only captures analog input, but not PCM

[Ilya B. <bas...@gm...>]

TI> At Fri, 4 Jan 2013 15:38:28 +0400,
TI> Ilya Basin wrote:
>> 
>> Hi list.
>> http://www.alsa-project.org/db/?f=ed1c063b697d0691a00c59eb385db99181ce5383
>> 
>> There are 5 input sources in alsamixer:
>> 'Front Mic', 'CD', 'Mic', 'Line', 'Mix'
>> 
>> When I select 'Mix', it records the mixture of microphones, CD,
>> and Line in (unmuted on playback page), but not the PCM.

TI> This is the hardware feature.  The analog loopback of AD1988 doesn't
TI> take the PCM input at all.

>> I have a dual boot with Windows XP. There the sound card is detected
>> as SoundMax HD Audio. On Windows the input source is called 'Stereo
>> Mixer' and it records both PCM and analog input (unmuted on playback
>> page), although when this source is selected, the analog input no
>> longer goes to the speakers.

TI> Windows does the loopback in software, AFAIK.

>> Also, unlike on Windows, there are no separate capture controls for
>> Mics, CD, and Line in. There's one called 'Digital'. It controls the
>> levels of whatever source is currently selected.

TI> Again, it's controlled in software on Windows.


TI> Takashi

Thanks. But since I asked, I managed to enable PCM capture with
hda-analyzer: the capture nodes has more inputs than visible in
alsamixer.

0x0c
selectable:
0x39 'Front Mic'
0x18 'CD'
0x3c 'Mic'
0x3a 'Line'
0x20 'Mix'

working PCM:
0x38
0x3b
0x24 'Center'/'LFE' Orange
0x25 'Side' Grey
0x3d


working Line in (Playback unmuted):
0x3a
0x24
0x25
0x20

working Line in (Playback muted):
0x3a

working Front Mic (Playback unmuted):
0x38
0x39
0x3b
0x24
0x25
0x3d
0x20

working Front Mic (Playback muted):
0x39


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