(Solved) ALSA internal microphone problems

stealor · 2012-05-03 21:24:02

Hey guys,

I'm new to arch and having problems with my internal microphone.

I thought i configured it right, after i used skype and realized i have just a rustle and hear only beatings on the microphone. but no sounds.

External Microphone works correctly.

1. I tried to check alsamixer for muted device, no chance everything is at 100
2. reinstalled alsa, also no difference
3. tried to find some alsa.conf or sth like that, to configure the device name, but failed hard

Please help me to fix it, you are my last chance.

I don't know which terminal outputs to post.

My Chip:Nvidia MCP77/78 HDMI

Last edited by stealor (2012-05-04 10:08:50)

Stebalien · 2012-05-03 23:23:52

I don't know what the problem is but, just as an FYI, devices can be muted at 100% volume (MM at the bottom of the meter indicates that the device is muted).

stealor · 2012-05-03 23:47:10

there is no MM in alsamixer, so its fine.
I can hear sound, but just when i beat the microphone, then i hear beatings. i also can hear my own voice, but its very quiet.

Stebalien · 2012-05-04 00:33:30

You probably just need to increase the gain. Please post the output of `amixer`.

stealor · 2012-05-04 07:55:06

Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
  Playback channels: Mono
  Limits: Playback 0 - 74
  Mono: Playback 51 [69%] [-23.00dB] [on]
Simple mixer control 'Headphone',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 74
  Mono:
  Front Left: Playback 74 [100%] [0.00dB] [on]
  Front Right: Playback 74 [100%] [0.00dB] [on]
Simple mixer control 'Speaker',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 74
  Mono:
  Front Left: Playback 74 [100%] [0.00dB] [on]
  Front Right: Playback 74 [100%] [0.00dB] [on]
Simple mixer control 'PCM',0
  Capabilities: pvolume penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 255 [100%] [0.00dB]
  Front Right: Playback 255 [100%] [0.00dB]
Simple mixer control 'Mic',0
  Capabilities: cvolume penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 80
  Front Left: Capture 0 [0%] [-74.00dB]
  Front Right: Capture 0 [0%] [-74.00dB]
Simple mixer control 'Mic Boost',0
  Capabilities: volume penum
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 4
  Front Left: 0 [0%] [0.00dB]
  Front Right: 0 [0%] [0.00dB]
Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [off]
Simple mixer control 'Beep',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
  Playback channels: Mono
  Limits: Playback 0 - 3
  Mono: Playback 2 [67%] [-6.00dB] [on]
Simple mixer control 'Auto-Mute Mode',0
  Capabilities: enum
  Items: 'Disabled' 'Enabled'
  Item0: 'Enabled'
Simple mixer control 'Digital',0
  Capabilities: cvolume penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 120
  Front Left: Capture 120 [100%] [30.00dB]
  Front Right: Capture 120 [100%] [30.00dB]
Simple mixer control 'Internal Mic',0
  Capabilities: cvolume penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 80
  Front Left: Capture 80 [100%] [6.00dB]
  Front Right: Capture 80 [100%] [6.00dB]
Simple mixer control 'Internal Mic Boost',0
  Capabilities: volume penum
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 4
  Front Left: 3 [75%] [30.00dB]
  Front Right: 3 [75%] [30.00dB]

i think its fine with the gain, but here amixer output

brebs · 2012-05-04 08:28:18

IIRC, position_fix can help with the microphone.

Of course, you should google for the correct "model=" parameter also.

stealor · 2012-05-04 08:45:09

I have to edit a file in /etc/modprobe.d/alsa.conf but i have no modprobe.d

where is this file located? i found an alsa.conf. in /usr/share/alsa, but i can't find the options .... entries

I solved the problem with this steps:

1. created in /etc the folder /modprobe.d, because it wasn't there, created a file alsa-base.conf

so i had

 /etc/modprobe.d/alsa-base.conf

and added the following line:

 options snd-hda-intel model=hp position_fix=1 enable=yes

and look, my internal microphone works correctly

Last edited by stealor (2012-05-04 09:45:15)

Arch Linux

#1 2012-05-03 21:24:02

(Solved) ALSA internal microphone problems

#2 2012-05-03 23:23:52

Re: (Solved) ALSA internal microphone problems

#3 2012-05-03 23:47:10

Re: (Solved) ALSA internal microphone problems

#4 2012-05-04 00:33:30

Re: (Solved) ALSA internal microphone problems

#5 2012-05-04 07:55:06

Re: (Solved) ALSA internal microphone problems

#6 2012-05-04 08:28:18

Re: (Solved) ALSA internal microphone problems

#7 2012-05-04 08:45:09

Re: (Solved) ALSA internal microphone problems

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