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#1 2010-02-11 04:35:39

bluu
Member
Registered: 2009-01-03
Posts: 3

Alsa and Intel-HDA: No Input Source

Hello,

just a couple of days ago my microphone suddenly stopped working. Now that I tried to solve the problem, I am kind of puzzled. As far as I remember, when opening alsamixer in the capture section (F4) I used to have a volume control for my line in (mic) and for my front mic, boosts for both, as well as switches to select input source 0 and 1. Now all that is left are the two boots and a capture which I can toggle for recording. My front mic in principle still works, I can hear my voice when unmuting its playback. Simply alsa is running, no pulseaudio or so. Basically I need to set my front mic as default input source again. Any ideas?

amixer scontents

Simple mixer control 'Master',0                                                         
  Capabilities: pvolume pswitch pswitch-joined penum                                    
  Playback channels: Front Left - Front Right                                           
  Limits: Playback 0 - 31                                                               
  Mono:                                                                                 
  Front Left: Playback 16 [52%] [-22.50dB] [on]                                         
  Front Right: Playback 16 [52%] [-22.50dB] [on]                                        
Simple mixer control 'Headphone',0                                                      
  Capabilities: pswitch penum                                                           
  Playback channels: Front Left - Front Right                                           
  Mono:                                                                                 
  Front Left: Playback [on]                                                             
  Front Right: Playback [on]                                                            
Simple mixer control 'Speaker',0                                                        
  Capabilities: pswitch penum                                                           
  Playback channels: Front Left - Front Right                                           
  Mono:                                                                                 
  Front Left: Playback [on]                                                             
  Front Right: Playback [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 'Front Mic',0                                                      
  Capabilities: pvolume pswitch penum                                                   
  Playback channels: Front Left - Front Right                                           
  Limits: Playback 0 - 31                                                               
  Mono:                                                                                 
  Front Left: Playback 31 [100%] [12.00dB] [off]                                        
  Front Right: Playback 31 [100%] [12.00dB] [off]                                       
Simple mixer control 'Front Mic Boost',0                                                
  Capabilities: volume penum                                                            
  Playback channels: Front Left - Front Right                                           
  Capture channels: Front Left - Front Right                                            
  Limits: 0 - 3                                                                         
  Front Left: 1 [33%]                                                                   
  Front Right: 1 [33%]                                                                  
Simple mixer control 'Mic',0                                                            
  Capabilities: pvolume pswitch penum                                                   
  Playback channels: Front Left - Front Right                                           
  Limits: Playback 0 - 31                                                               
  Mono:                                                                                 
  Front Left: Playback 31 [100%] [12.00dB] [off]                                        
  Front Right: Playback 31 [100%] [12.00dB] [off]                                       
Simple mixer control 'Mic Boost',0                                                      
  Capabilities: volume penum                                                            
  Playback channels: Front Left - Front Right                                           
  Capture channels: Front Left - Front Right                                            
  Limits: 0 - 3                                                                         
  Front Left: 3 [100%]                                                                  
  Front Right: 3 [100%]                                                                 
Simple mixer control 'IEC958',0                                                         
  Capabilities: pswitch pswitch-joined penum                                            
  Playback channels: Mono                                                               
  Mono: Playback [on]                                                                   
Simple mixer control 'IEC958 Default PCM',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Beep',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 31
  Front Left: Capture 31 [100%] [34.50dB] [on]
  Front Right: Capture 31 [100%] [34.50dB] [on]
Simple mixer control 'Digital',0
  Capabilities: cvolume penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 120
  Front Left: Capture 0 [0%] [-30.00dB]
  Front Right: Capture 0 [0%] [-30.00dB]

lspci

Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller

Thanks!

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