mic: nVidia Corporation MCP51 High Definition Audio (rev a2)

[paul_chany]

Hi,

I want to setup microphone, sofar without any success.

I have installed Linux gentoo 2.6.34-gentoo-r1 #1 SMP Sun Aug 1 17:30:08 CEST 2010 x86_64 Intel(R) Core(TM)2 CPU 6320 @ 1.86GHz GenuineIntel GNU/Linux.

The speakers and PC speaker works well.
The microphone is connected to the Front of my PC Box.

alsamixer gives to me:
Card: HDA NVidia
Chip: Realtek ALC883

In alsamixer i have unmuted Front Mic 100<>100 and Front Mic 67<>67.

Code: Select all

$ sudo lspci | grep Audio
00:10.1 Audio device: nVidia Corporation MCP51 High Definition Audio (rev a2)

Code: Select all

$ lsmod | grep snd
snd_pcm_oss            29021  0 
snd_mixer_oss          11939  2 snd_pcm_oss
snd_seq_dummy           1183  0 
snd_seq_oss            22271  0 
snd_seq_midi_event      4484  1 snd_seq_oss
snd_seq                39677  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_seq_device          4397  3 snd_seq_dummy,snd_seq_oss,snd_seq
snd_hda_codec_realtek   250681  1 
snd_hda_intel          17772  2 
snd_hda_codec          63695  2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep               4964  1 snd_hda_codec
snd_pcm                54080  3 snd_pcm_oss,snd_hda_intel,snd_hda_codec
snd_timer              15260  2 snd_seq,snd_pcm
snd                    42362  13 snd_pcm_oss,snd_mixer_oss,snd_seq_oss,snd_seq,snd_seq_device,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_timer
soundcore               4431  2 snd
snd_page_alloc          5817  2 snd_hda_intel,snd_pcm
firmware_class          5504  8 snd_hda_codec,tg3,aic94xx,libsas,qla2xxx,qla1280,advansys,pcmcia

When I try to test microphone with Ekiga or Skype, it just don't works.
I try record with arecord:

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$ arecord -t au > mikrofon.au
Recording Sparc Audio 'stdin' : Unsigned 8 bit, Rate 8000 Hz, Mono
^CAborted by signal Félbeszakítás...

and then play it with aplay:

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$ aplay mikrofon.au 
Playing Sparc Audio 'mikrofon.au' : Unsigned 8 bit, Rate 8000 Hz, Mono

but nothing can be hearing.

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$ arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: ALC883 Analog [ALC883 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 1: ALC883 Digital [ALC883 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 2: ALC883 Analog [ALC883 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

What am I missing here?

[paul_chany]

I want to setup microphone, sofar without any success.

I shall not be at home and at Internet untill 6 August 2010, so I can't
reply to this thread so far.

However I wish to solve this problem very much.

[paul_chany]

I want to setup microphone, sofar without any success.

This is not true anymore.
I did the following:

• recompile the kernel.
• setup sound with alsamixer

My kernel configuration for sound are:
(when something is not set, there I write '...' here)

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CONFIG_SOUND=m
CONFIG_SOUND_OSS_CORE=y
CONFIG_SOUND_OSS_CORE_PRECLAIM=y
CONFIG_SND=m                    
CONFIG_SND_TIMER=m
CONFIG_SND_PCM=m
CONFIG_SND_HWDEP=m
CONFIG_SND_JACK=y
CONFIG_SND_SEQUENCER=m
CONFIG_SND_SEQ_DUMMY=m
CONFIG_SND_OSSEMUL=y  
CONFIG_SND_MIXER_OSS=m
CONFIG_SND_PCM_OSS=m
CONFIG_SND_PCM_OSS_PLUGINS=y
CONFIG_SND_SEQUENCER_OSS=y  
CONFIG_SND_RTCTIMER=m
CONFIG_SND_SEQ_RTCTIMER_DEFAULT=y
...
CONFIG_SND_SUPPORT_OLD_API=y
...
CONFIG_SND_VMASTER=y
CONFIG_SND_DMA_SGBUF=y
...                            
CONFIG_SND_PCI=y
...
CONFIG_SND_HDA_INTEL=m
CONFIG_SND_HDA_HWDEP=y
CONFIG_SND_HDA_RECONFIG=y
CONFIG_SND_HDA_INPUT_BEEP=y
CONFIG_SND_HDA_INPUT_BEEP_MODE=1
CONFIG_SND_HDA_INPUT_JACK=y
CONFIG_SND_HDA_PATCH_LOADER=y
CONFIG_SND_HDA_CODEC_REALTEK=y
CONFIG_SND_HDA_CODEC_ANALOG=y
CONFIG_SND_HDA_CODEC_SIGMATEL=y
CONFIG_SND_HDA_CODEC_VIA=y
CONFIG_SND_HDA_CODEC_ATIHDMI=y
CONFIG_SND_HDA_CODEC_NVHDMI=y
CONFIG_SND_HDA_CODEC_INTELHDMI=y
CONFIG_SND_HDA_ELD=y
CONFIG_SND_HDA_CODEC_CIRRUS=y
CONFIG_SND_HDA_CODEC_CONEXANT=y
CONFIG_SND_HDA_CODEC_CA0110=y
CONFIG_SND_HDA_CODEC_CMEDIA=y
CONFIG_SND_HDA_CODEC_SI3054=y
CONFIG_SND_HDA_GENERIC=y
CONFIG_SND_HDA_POWER_SAVE=y
CONFIG_SND_HDA_POWER_SAVE_DEFAULT=0
...

In alsamixer I have the following settings:
(I hit F5 to get All settings.)

• Front Mic Boost: 33<>33
• Mic Boost: 0 (because I'm using the Front Microphone slot)
• S/PDIF: ON
• S/PDIF Default PCM: ON
• Capture: 45<>45
• Capture 1: 97<>97
• Channel Mode: 6 ch
• Digital: 96<>96
• Input Source: Front Mic
• Input Source 1: Front Mic

Now I have the following loaded kernel modules:

Code: Select all

snd_pcm_oss            29021  0 
snd_mixer_oss          11939  2 snd_pcm_oss
snd_seq_dummy           1183  0 
snd_seq_oss            22271  0 
snd_seq_midi_event      4484  1 snd_seq_oss
snd_seq                39677  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_seq_device          4397  3 snd_seq_dummy,snd_seq_oss,snd_seq
snd_hda_codec_realtek   250681  1 
snd_hda_intel          17772  1 
snd_hda_codec          63695  2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep               4964  1 snd_hda_codec
snd_pcm                54080  3 snd_pcm_oss,snd_hda_intel,snd_hda_codec
snd_timer              15260  2 snd_seq,snd_pcm
snd                    43117  11 snd_pcm_oss,snd_mixer_oss,snd_seq_oss,snd_seq,snd_seq_device,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_timer
soundcore               4431  2 snd
snd_page_alloc          5817  2 snd_hda_intel,snd_pcm
firmware_class          5504  8 snd_hda_codec,tg3,aic94xx,libsas,qla2xxx,qla1280,advansys,pcmcia

I have the following setup in Ekiga:
(Control-P -> Settings / Devices / Audio Devices)

• Audio Plugin: ALSA
• Audio Devices:
  • Output Device: HDA NVidia
  • Input Device: HDA NVidia

I have the following setup in Skype:
(Control-O -> Options / Sound Devices)

• Microphone: Default device (default)
• Speakers: Default device (default)
• Ringing: Default device (default)
• I checked the 'Allow Skype to automatically adjust my mixer levels'

I have the following setup in Audacity:
(Control-P -> Settings / Devices)

• Host: ALSA
• Play Back Device: default
• Input Device: default
• Channels: 2 (Stereo)

It works!

[mitch_feaster]

Thanks for following up on your own post. I have the exact same hardware with the exact same issue and was able to resolve it because of your post. Thanks!