Public bug reported:

Per https://wiki.ubuntu.com/DebuggingSoundProblems, reporting that the
builtin/onboard microphone does not work "out of the box" on a Thinkpad
Edge 13 0196CTO. An external mic plugged in to the "combo" headphone/mic
jack does work. Builtin speakers and also headphones work fine, and
switch back and forth when the mic/phones are plugged in.

>From http://ubuntuforums.org/showthread.php?t=1609411, I tried using
'options snd-hda-intel model=laptop' in /etc/modprobe.d/alsa-base.conf,
which after rebooting enabled the internal microphone, however disabled
the switching between the internal mic+speakers and the external jack
(i.e. plugging in the external mic/phones had no effect, audio in & out
was still from the builtin devices). I don't see any option in
/usr/share/doc/alsa-base/driver/HD-Audio-Models.txt.gz that matches this
hardware.

Output from ubuntu-bug audio attached.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: alsa-base 1.0.23+dfsg-1ubuntu4
ProcVersionSignature: Ubuntu 2.6.35-23.40-generic-pae 2.6.35.7
Uname: Linux 2.6.35-23-generic-pae i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  ben        1981 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf0800000 irq 48'
   Mixer name   : 'Intel Cantiga HDMI'
   Components   : 'HDA:14f15066,17aa21b4,00100300 
HDA:80862802,80860101,00100000'
   Controls      : 10
   Simple ctrls  : 5
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 
6YHT26WW-1.171000'
   Mixer name   : 'ThinkPad EC 6YHT26WW-1.171000'
   Components   : ''
   Controls      : 1
   Simple ctrls  : 1
Card29.Amixer.values:
 Simple mixer control 'Console',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Date: Wed Dec  1 17:14:47 2010
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, user)
 LANG=en_AU.utf8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Title: Soundcard not detected
dmi.bios.date: 09/10/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6YET33WW (1.16 )
dmi.board.name: 0196CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: 
dmi:bvnLENOVO:bvr6YET33WW(1.16):bd09/10/2010:svnLENOVO:pn0196CTO:pvrThinkPadEdge:rvnLENOVO:rn0196CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 0196CTO
dmi.product.version: ThinkPad Edge
dmi.sys.vendor: LENOVO

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


** Tags: apport-bug i386 maverick

-- 
Inbuilt microphone not working on Thinkpad Edge 13 0196CTO
https://bugs.launchpad.net/bugs/683487
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