Comment 0 for bug 781240

When plugging in headphones, audio plays simultaneously on computer speakers and headphones. I can switch levels in alsamixer to mute speaker output. If I'm in sound preferences, I can switch connector (e.g. from analog speaker to headphones and back again) which actually rectifies the problem until logout or reboot. I have attempted installing alsa-driver modules to no effect.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: alsa-base 1.0.24+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
NonfreeKernelModules: wl
AlsaVersion:
 Advanced Linux Sound Architecture Driver Version 1.0.24.
 Compiled on May 5 2011 for kernel 2.6.38-8-generic-pae (SMP).
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: ALC269VB Analog [ALC269VB Analog]
   Subdevices: 0/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: sean 1285 F.... pulseaudio
 /dev/snd/pcmC0D0c: sean 1285 F...m pulseaudio
 /dev/snd/pcmC0D0p: sean 1285 F...m pulseaudio
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xfbbf4000 irq 16'
   Mixer name : 'Realtek ALC269VB'
   Components : 'HDA:10ec0269,1043841c,00100100'
   Controls : 12
   Simple ctrls : 8
Card1.Amixer.info:
 Card hw:1 'HDMI'/'HDA ATI HDMI at 0xfbde8000 irq 19'
   Mixer name : 'ATI RS690/780 HDMI'
   Components : 'HDA:1002791a,00791a00,00100000'
   Controls : 4
   Simple ctrls : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Date: Wed May 11 09:00:59 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110330)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:SB successful
Symptom_Card: Internal Audio - HDA ATI SB
Symptom_Jack: Green Headphone Out, Right
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: None of the above
Title: [1215T, Realtek ALC269VB, Green Headphone Out, Right] Playback problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/27/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0304
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 1215T
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.:bvr0304:bd09/27/2010:svnASUSTeKComputerINC.:pn1215T:pvrx.x:rvnASUSTeKComputerINC.:rn1215T:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
dmi.product.name: 1215T
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.