Public bug reported:

My on-board mic does not capture audio with either Sound Recorder nor
Skype.  However, audio capture works fine with an external microphone
plugged in.

Gateway CX210X Tablet
Ubuntu 9.10
Intel ICH7 Family high dev audio controller
Codecs:
SigmaTel STAC9250
Motorola Si3054

alsa-base version 1.0.20+dsfg-1ubuntu5

ProblemType: Bug
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  andrew     1603 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xd8400000 irq 22'
   Mixer name   : 'SigmaTel STAC9250'
   Components   : 'HDA:83847634,107b0281,00100101 
HDA:10573057,00010001,00100100'
   Controls      : 10
   Simple ctrls  : 8
CheckboxSubmission: 53d71c2bb99148a2e1e1de471bc6ab16
CheckboxSystem: 090f50ffa15f2babaae2e4e2bf775960
Date: Thu Apr 29 17:07:18 2010
DistroRelease: Ubuntu 9.10
Package: alsa-base 1.0.20+dfsg-1ubuntu5
PackageArchitecture: all
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-20.58-generic
SourcePackage: alsa-driver
Uname: Linux 2.6.31-20-generic i686
XsessionErrors:
 (gnome-settings-daemon:1616): GLib-CRITICAL **: g_propagate_error: assertion 
`src != NULL' failed
 (gnome-settings-daemon:1616): GLib-CRITICAL **: g_propagate_error: assertion 
`src != NULL' failed
 (nautilus:1720): Eel-CRITICAL **: eel_preferences_get_boolean: assertion 
`preferences_is_initialized ()' failed
 (polkit-gnome-authentication-agent-1:1741): GLib-CRITICAL **: 
g_once_init_leave: assertion `initialization_value != 0' failed

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


** Tags: apport-bug i386

-- 
no audio capture except with external microphone
https://bugs.launchpad.net/bugs/571965
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