Public bug reported:

After an update my internal mic stopped working. I tried Arecord and Skype. 
Both not working.
I tried reinstalling and purging all drivers according to the Comprehensive 
sound guide on Ubuntuforums but still no luck.
Pulseaudio is not installed just running Alsa drivers.

I have a intel AD1984 internal mic on a lenovo thinkpad x61

When I bring up internal channel on alsamixer I can hear the mic on my speakers.
After I then try to Arecord bla.wav and then play it once again no sound.

Please let me know which info I need to provide and the steps how to get
it and I will do so!

I have put screenshots of my alsamixer as attachment. and here:
http://img10.imageshack.us/img10/8281/52357628.png
http://img205.imageshack.us/img205/9811/18438689.png
http://img59.imageshack.us/img59/1687/66936767.png


Here is my amixer results:
Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
  Playback channels: Mono
  Limits: Playback 0 - 39
  Mono: Playback 39 [100%] [0.00dB] [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 - 39
  Mono:
  Front Left: Playback 39 [100%] [0.00dB]
  Front Right: Playback 39 [100%] [0.00dB]
Simple mixer control 'Mic',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 20 [65%] [-4.50dB] [on]
  Front Right: Playback 20 [65%] [-4.50dB] [on]
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: 2 [67%]
  Front Right: 2 [67%]
Simple mixer control 'IEC958',0
  Capabilities: pvolume pswitch pswitch-joined penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 39
  Mono:
  Front Left: Playback 39 [100%] [0.00dB] [on]
  Front Right: Playback 39 [100%] [0.00dB] [on]
Simple mixer control 'IEC958 Default PCM',0
  Capabilities: pswitch pswitch-joined penum
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'IEC958 Playback Source',0
  Capabilities: enum
  Items: 'PCM' 'ADC'
  Item0: 'PCM'
Simple mixer control 'Beep',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
  Playback channels: Mono
  Limits: Playback 0 - 15
  Mono: Playback 15 [100%] [0.00dB] [off]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 54
  Front Left: Capture 54 [100%] [22.50dB] [on]
  Front Right: Capture 54 [100%] [22.50dB] [on]
Simple mixer control 'Capture',1
  Capabilities: cvolume cswitch penum
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 54
  Front Left: Capture 54 [100%] [22.50dB] [on]
  Front Right: Capture 54 [100%] [22.50dB] [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]
Simple mixer control 'Docking Mic',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 'Docking Mic Boost',0
  Capabilities: volume penum
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 0 [0%]
  Front Right: 0 [0%]
Simple mixer control 'Input Source',0
  Capabilities: cenum
  Items: 'Mic' 'Internal Mic' 'Mix' 'Docking-Station'
  Item0: 'Internal Mic'
Simple mixer control 'Input Source',1
  Capabilities: cenum
  Items: 'Mic' 'Internal Mic' 'Mix' 'Docking-Station'
  Item0: 'Internal Mic'
Simple mixer control 'Internal Mic',0
  Capabilities: pvolume pswitch penum
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 16 [52%] [-10.50dB] [on]
  Front Right: Playback 16 [52%] [-10.50dB] [on]
Simple mixer control 'Internal Mic Boost',0
  Capabilities: volume penum
  Playback channels: Front Left - Front Right
  Capture channels: Front Left - Front Right
  Limits: 0 - 3
  Front Left: 2 [67%]
  Front Right: 2 [67%]

** Affects: alsa-driver (Ubuntu)
     Importance: Undecided
         Status: New

-- 
AD1984 internal mic not working
https://bugs.launchpad.net/bugs/636857
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