** Description changed:

  Binary package hint: pulseaudio
  
  On Kubuntu 10.04 (ALSA only) I when I put headphones - speakers muted 
automatic.
  On Ubuntu 10.10 (with PulseAudio) when I put headphones subwoofer still 
continue to sound until I select "Analog Headphones" channel instead of "Analog 
Speakers" channel in system sound options.
  Tested on Intel HDA (in my case it's Realtek ALC272 chip).
- 
- ProblemType: Bug
- DistroRelease: Ubuntu 10.10
- Package: pulseaudio 1:0.9.22~0.9.21+stable-queue-32-g8478-0ubuntu17
- ProcVersionSignature: Ubuntu 2.6.35-11.16-generic 2.6.35-rc5
- Uname: Linux 2.6.35-11-generic x86_64
- AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
- Architecture: amd64
- ArecordDevices:
-  **** List of CAPTURE Hardware Devices ****
-  card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
-    Subdevices: 1/1
-    Subdevice #0: subdevice #0
- AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC0:  nikita     1525 F.... pulseaudio
-  /dev/snd/pcmC0D0p:   nikita     1525 F...m pulseaudio
- Card0.Amixer.info:
-  Card hw:0 'Intel'/'HDA Intel at 0xf5500000 irq 49'
-    Mixer name : 'Realtek ALC272'
-    Components : 'HDA:10ec0272,17aa3872,00100001'
-    Controls      : 22
-    Simple ctrls  : 12
- Card1.Amixer.info:
-  Card hw:1 'NVidia'/'HDA NVidia at 0xf5000000 irq 16'
-    Mixer name : 'Nvidia GT220 HDMI'
-    Components : 'HDA:10de000a,10de0101,00100100'
-    Controls      : 16
-    Simple ctrls  : 4
- Date: Sat Jul 31 03:12:35 2010
- InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
- ProcEnviron:
-  LANG=ru_RU.UTF-8
-  SHELL=/bin/bash
- SourcePackage: pulseaudio
- dmi.bios.date: 03/15/2010
- dmi.bios.vendor: LENOVO
- dmi.bios.version: 15CN35WW(V2.08)
- dmi.board.name: KIWB1
- dmi.board.vendor: LENOVO
- dmi.board.version: REFERENCE
- dmi.chassis.asset.tag: No Asset Tag
- dmi.chassis.type: 10
- dmi.chassis.vendor: No Enclosure
- dmi.chassis.version: N/A
- dmi.modalias: 
dmi:bvnLENOVO:bvr15CN35WW(V2.08):bd03/15/2010:svnLENOVO:pn20017:pvrLenovoIdeaPadY550:rvnLENOVO:rnKIWB1:rvrREFERENCE:cvnNoEnclosure:ct10:cvrN/A:
- dmi.product.name: 20017
- dmi.product.version: Lenovo IdeaPad Y550
- dmi.sys.vendor: LENOVO

-- 
[Lenovo IdeaPad Y550] Subwoofer don't mute/unmute on plugging external acoustics
https://bugs.launchpad.net/bugs/611803
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