No Sound from Headphones Lenovo R61i

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It was the same when 11.04 first came out, no audio out option for headphones was visible from the sound output but speakers worked fine##

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: alsa-base 1.0.24+dfsg-0ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-13.22-generic 3.0.6
Uname: Linux 3.0.0-13-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
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: sean 1509 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfe100000 irq 45'
   Mixer name : 'Conexant CX20549 (Venice)'
   Components : 'HDA:14f15045,17aa20dc,00100100'
   Controls : 10
   Simple ctrls : 6
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7KHT24WW-1.08'
   Mixer name : 'ThinkPad EC 7KHT24WW-1.08'
   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 Nov 9 15:53:37 2011
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel failed
Symptom_Card: Internal Audio - HDA Intel
Symptom_Jack: Green Headphone Out, Left
Symptom_Type: No sound at all
Title: [7650E8G, Conexant CX20549 (Venice), Green Headphone Out, Left] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/08/2008
dmi.bios.vendor: LENOVO
dmi.bios.version: 7PETB5WW (2.15 )
dmi.board.name: 7650E8G
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:bvr7PETB5WW(2.15):bd05/08/2008:svnLENOVO:pn7650E8G:pvrThinkPadR61e:rvnLENOVO:rn7650E8G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 7650E8G
dmi.product.version: ThinkPad R61e
dmi.sys.vendor: LENOVO

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jan-Pieter Jacobs (jpjacobs)]

I've got similar problems. Sometimes sound output via the headphone jack does work, but not always.
Aside of this, sometimes (apparently mostly after waking up from suspend), sound does not work for some applications (like vlc) but does work for KDE desktop soundeffects.

Additionally to the problems introduced by the Oneiric release, my (internal) microphone doesn't work at all (since like 8.04) without a patched kernel (found here: https://launchpad.net/~c4pp4/+archive/ppa).
Less importantly, but irritating none the less: when the power cable is unplugged, a chirping noise is heard through the built-in speakers. It's not present on the headphone jack (if it works).

It would be marvelous to have this working out of the box in mainstream. I'd be happy to collaborate on this topic, just contact me.

[Piotr Borkowski (boroslav-t)]

Try the solution from the following comment:
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/876020/comments/8