[1005PE, Realtek ALC269, Mic, Internal] internal mic works only if "right" and "left" channel are set to different levels

[Romano Giannetti]

This is very strange. Since Maverick Merkaat my internal mic stopped working. Now, thanks to a thread in ubuntuforum (http://ubuntuforums.org/showthread.php?t=1769886) I discovered that opening pavucontrol and setting the "right" channel to anything lower than the "left" channel makes the mic work again.

The problem is that adjusting the volume of the internal mic with the sound applet locks the two channel again at the same level, and the mic stops working.

I tried in Natty the ppa-drivers and there was no difference.

The external mic works in any case.

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 i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
   Subdevices: 0/1
   Subdevice #0: subdevice #0
ApportVersion: 1.23-0ubuntu4
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
   Subdevices: 0/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: romano 1602 F.... pulseaudio
 /dev/snd/pcmC0D0c: romano 1602 F...m pulseaudio
 /dev/snd/pcmC0D0p: romano 1602 F...m pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf7cf8000 irq 45'
   Mixer name : 'Realtek ALC269'
   Components : 'HDA:10ec0269,104383ce,00100004'
   Controls : 13
   Simple ctrls : 8
Date: Wed Nov 30 10:34:35 2011
InstallationMedia: Ubuntu-Netbook 10.04 "Lucid Lynx" - Release i386 (20100429.4)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: Internal Audio - HDA Intel
Symptom_Jack: Mic, Internal
Symptom_Type: Volume slider, or mixer problems
Title: [1005PE, Realtek ALC269, Mic, Internal] volume slider problem
UpgradeStatus: Upgraded to oneiric on 2011-11-11 (18 days ago)
dmi.bios.date: 06/23/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1202
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 1005P
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer INC.
dmi.chassis.version: x.x
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1202:bd06/23/2010:svnASUSTeKComputerINC.:pn1005PE:pvrx.x:rvnASUSTeKComputerINC.:rn1005P:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
dmi.product.name: 1005PE
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.

[David Henningsson (diwic)]

Hi Romano,

It looks like your bug is fixed upstream already (there is a quirk for your machine). Have you tried the DKMS packages for Oneiric lately? See http://wiki.ubuntu.com/Audio/UpgradingAlsa/DKMS

[Romano Giannetti (romano-giannetti)]

No, tested only with Natty. Will try asap, post the results.

[Romano Giannetti (romano-giannetti)]

Tested right now --- it works. Please push the solution to oneiric-updates.
I will comment this on the (at least) three threads on ubuntuforums.

THANKS!