[Bug 495134] [NEW] No internal mic on LG R510 laptop (Intel HDA ICH9, ALC268)

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I have already asked this as a question but I am now reporting it to be
a bug, as I've tried several things to fix this myself.

I have tried upgrading to the last alsa version and also changing the
model in the alsa-base.conf file. Since Karmic it is now not necessary
to use de model option to hear sounds. Before Karmic, I was using
model=toshiba.

Several models work for this particular sound card, but none of them
recognises the microphone. When I say microphone I am talking about
internal microhpone, plugging an external one works properly.

When I record sounds with Audacity (or any other software) I only hear
noise (like "fffffff"), but I never hear my voice.

I provide here the alsa-info.sh output: http://www.alsa-project.org/db/?f=32ec89682bee5649c684198911df985a0fd281e9
--- 
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  ubuntu     2765 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xdb300000 irq 22'
   Mixer name	: 'Nvidia MCP78 HDMI'
   Components	: 'HDA:10ec0268,18541775,00100003 HDA:11c11040,18541775,00100200 HDA:10de0003,10de0101,00100000'
   Controls      : 17
   Simple ctrls  : 9
DistroRelease: Ubuntu 10.04
LiveMediaBuild: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100318)
Package: alsa-driver (not installed)
ProcEnviron:
 LANG=es_ES.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
Tags: lucid
Uname: Linux 2.6.32-16-generic x86_64
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

--- 
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  ubuntu     2794 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xdb300000 irq 22'
   Mixer name	: 'Nvidia MCP78 HDMI'
   Components	: 'HDA:10ec0268,18541775,00100003 HDA:11c11040,18541775,00100200 HDA:10de0003,10de0101,00100000'
   Controls      : 17
   Simple ctrls  : 9
DistroRelease: Ubuntu 10.04
LiveMediaBuild: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100318)
Package: alsa-driver (not installed)
ProcEnviron:
 LANG=es_ES.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
Tags: lucid
Uname: Linux 2.6.32-16-generic x86_64
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Fix Committed


** Tags: apport-collected kj-expired kj-triage lucid needs-test-current-image no-sound-mic
-- 
No internal mic on LG R510 laptop (Intel HDA ICH9, ALC268)
https://bugs.edge.launchpad.net/bugs/495134
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