Comment 0 for bug 764062

Problem is sporadic. If computer is booted with headphones unplugged the sound switching works fine. Breaks sometimes following suspend or upon opening certain content such as Flash animations. Unsure exactly what is causing it. Often machine will lock on one or the other output and will play sound correctly through that output but will not switch back and fourth.

If fixated on internal speakers there is sound from the speakers and plugging in the headphones does not mute and headphones produce no sound. If fixated on headphones the internal speakers are muted and sound comes through the headphones properly but removing headphones does not unmute speakers.

System information gathered when computer is operating properly.

System: 11.04 Beta 2

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: alsa-base 1.0.24+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 1: SB [HDA ATI SB], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: samantha 1528 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Generic'/'HD-Audio Generic at 0x90244000 irq 45'
   Mixer name : 'ATI R6xx HDMI'
   Components : 'HDA:1002aa01,00aa0100,00100200'
   Controls : 4
   Simple ctrls : 1
Card0.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Card1.Amixer.info:
 Card hw:1 'SB'/'HDA ATI SB at 0x90240000 irq 16'
   Mixer name : 'Conexant CX20582 (Pebble)'
   Components : 'HDA:14f15066,17aa21df,00100302'
   Controls : 8
   Simple ctrls : 5
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw unknown'
   Mixer name : 'ThinkPad EC (unknown)'
   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: Sun Apr 17 15:54:28 2011
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: Internal Audio - HDA ATI SB
Symptom_Jack: Black Headphone Out, Left
Symptom_Type: No auto-mute between outputs
Title: [0596CTO, Conexant CX20582 (Pebble), Black Headphone Out, Left] No automute
UpgradeStatus: Upgraded to natty on 2011-04-17 (0 days ago)
dmi.bios.date: 03/24/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8FET27WW (1.11 )
dmi.board.asset.tag: Not Available
dmi.board.name: 0596CTO
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:bvr8FET27WW(1.11):bd03/24/2011:svnLENOVO:pn0596CTO:pvrThinkPadX120e:rvnLENOVO:rn0596CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 0596CTO
dmi.product.version: ThinkPad X120e
dmi.sys.vendor: LENOVO