Conexant CX20583 Pebble HSF internal mic not working for Compaq Presario, external mic works with PulseAudio installed

Hi, I'm a new user running Ubuntu 10.04 on a Compaq Presario CQ60-615DX notebook, with a Conexant CX20583 (Pebble HSF) sound card installed, also known as the Conexant 5067 chipset. I'm running alsa-base version 1.0.22.1+dfsg-0ubuntu3.

My problem is that the internal microphone is not working. Initially I was unable to use a headset as well -- the sound card did not appear to detect that I had plugged a headset into the jack. Through the online forums, I corrected that problem by adding the line "options snd-hda-intel model=dell-vostro" to the file /etc/modprobe.d/alsa-base.conf. That fix allowed me to use my earphones, but the internal mic is still not working. My headphones have an external mic, but that is not being detected either.

Following a suggested solution to a similar reported bug <https://bugs.launchpad.net/ubuntu/+source/linux/+bug/587388>, I updated ALSA to version 1.0.23. This apparently corrected a similar problem for other Ubuntu users, but didn't seem to work for this Compaq. Synaptic Package Manager now shows two installed packages of interest: alsa-base version 1.0.22.1+dfsg-0ubuntu3 and alsa-intel-hda-update-diwic-hp-g60-dkms version 1.0.23.

Following some additional tips in online forums, I tried adding "options snd-hda-intel model=dell-vostro enable_msi=1" to /etc/modprobe.d/alsa-base.conf. This did not correct the problem.

Next I tried updating my ALSA drivers using advice from this forum: <http://<email address hidden>/msg2457085.html>. This led me to <https://wiki.ubuntu.com/Audio/InstallingLinuxAlsaDriverModules>, where I followed the procedures to install the latest development code for ALSA. In doing so I removed the following software: linux-backports-modules-alsa-2.6.32-25-generic, and linux-backports-modules-alsa-lucid-generic. No improvement, however.

Finally I installed PulseAudio following a suggestion from an online forum (<http://ubuntuforums.org/showthread.php?t=1492643>). I have duplex internal speakers and a duplex internal microphone, so the suggestion was to mute one side and see if I could record on either one of the microphones by itself. That didn't work. But in the process I noted that I could use PulseAudio to change my default microphone from the internal mic to my Logitec Fusion Web camera. The microphone on my headset, which is plugged into the jack, doesn't work, but the Fusion camera is able to record audio.

This leads me to suspect that my previous attempt to fix the headphone jack may have only addressed the audio output jack, and not the input jack. Otherwise, PulseAudio should be picking up the microphone on my headset, right?

This computer is configured to dual-boot with Windows 7, and I am able to use all microphones properly there. This is therefore not a hardware problem.

I believe I have tried all existing bugfixes, so this appears to be a problem that is still upstream. Please let me know if I could provide any additional information. My guess is that the problem is close to something that's been repaired already, in particular with Dell computers, but I'm apparently running a Dell Vostro chip in a Compaq Presario and the previous fix doesn't quite work with this configuration. In any case, many thanks for addressing this!

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: alsa-base 1.0.22.1+dfsg-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.32-25.44-generic 2.6.32.21+drm33.7
Uname: Linux 2.6.32-25-generic x86_64
AlsaVersion:
 Advanced Linux Sound Architecture Driver Version 1.0.23.
 Compiled on Oct 7 2010 for kernel 2.6.32-25-generic (SMP).
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 0/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: atrus 1371 F.... pulseaudio
                      atrus 1669 F.... alsamixer
 /dev/snd/pcmC0D0c: atrus 1371 F...m pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0x94700000 irq 29'
   Mixer name : 'Conexant CX20583 (Pebble HSF)'
   Components : 'HDA:14f15067,103c360b,00100301'
   Controls : 9
   Simple ctrls : 6
Date: Fri Oct 8 03:53:42 2010
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027.1)
PackageArchitecture: all
ProcEnviron:
 LANG=zh_TW.UTF-8
 SHELL=/bin/bash
SelectedCard: 0 Intel HDA-Intel - HDA Intel
SourcePackage: alsa-driver
Symptom: audio
Title: [Conexant CX20583 (Pebble HSF)] Recording problem
dmi.bios.date: 11/19/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.61
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 3612
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 09.66
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.61:bd11/19/2009:svnHewlett-Packard:pnCompaqPresarioCQ60NotebookPC:pvr0487130002200D10000620000:rvnHewlett-Packard:rn3612:rvr09.66:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.name: Compaq Presario CQ60 Notebook PC
dmi.product.version: 0487130002200D10000620000
dmi.sys.vendor: Hewlett-Packard