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** Changed in: pulseaudio (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/989847

Title:
  Problem between pulseaudio and ALSA, suddenly no sound

Status in pulseaudio package in Ubuntu:
  Incomplete

Bug description:
  After updating to 12.04, my sound was working fine. At some point
  within the past 24 hours, it very suddenly stopped working. I did
  execute an "apt-get upgrade" once, so this may have been the cause. I
  have not made any modifications to pulesaudio or ALSA's configuration,
  so Ubuntu's default configuration is set.

  I have been searching other bug reports with similar symptoms, but
  most of them are from back in 2008, so I assume this is a new issue.

  My sound card has only headphone output, so I must use headphones.

  % sudo lshw -C sound
  [sudo] password for ramin:
    *-multimedia
         description: Audio device
         product: 82801JD/DO (ICH10 Family) HD Audio Controller
         vendor: Intel Corporation
         physical id: 1b
         bus info: pci@0000:00:1b.0
         version: 02
         width: 64 bits
         clock: 33MHz
         capabilities: pm msi pciexpress bus_master cap_list
         configuration: driver=snd_hda_intel latency=0
         resources: irq:292 memory:fe6dc000-fe6dffff

  Symptoms:
  Pulseaudio works fine, I can use my laptop as a sink and hear sound played on 
my desktop (my desktop is the one with the problem).

  Alsamixer selects the correct sound card and I can unmute and turn-up
  the volume and PCM. When I fiddle with the volume in alsamixer, or in
  the Gnome Control Center, I can hear the usual white noise in my
  headphones become lounder and softer as I turn the volume up and down,
  so the alsamixer is certainly interfaced with the sound card.

  However, when I try to play a sound, either with aplay, paplay, or
  mplayer, nothing works. Although I was able to watch YouTube videos
  earlier today without any problems, I cannot remember if this was
  before or after I executed a software update. But when I sink audio
  output into my laptop, all three of these applications work correctly.

  One thing is curious: alsamixer has a "headphone" volume control right
  next to the "master" volume control, and the "headphone" volume
  control is unmuted, but I am unable to turn the volume up or down on
  this controller, it is fixed at a 0 value.

  I thought perhaps pulseaudio was trying to output to a non-existent
  port on the soundcard (like speakers instead of headphones), so I
  tried enabling simultaneous output, but this did not solve the
  problem.

  I tried executing "alsactl restore" and "alsactl init" but this did
  not solve the problem.

  I believe the problem may be with Pulseaudio, and how it has
  configured my sound card as a sink, but I am not sure. The sound card
  obviously is working (it was working earlier today), and so is
  Pulseaudio (it can sink sound into a networked sound card), but they
  don't seem to be "connected" together.

  Another possibility is that the sound card has not detected that my
  headphones are plugged in and has muted the output (although I can
  still hear the usual white noise when turning up the volume), but I
  don't know how to check for this with pacmd, and alsamixer is
  indicating that everything is UNmuted (except headphone output is
  fixed at 0 volume).

  PLEASE HELP!!!

  Here is the output of "pacmd dump" with my headphones plugged in:

  ### Configuration dump generated at Sat Apr 28 00:20:15 2012

  load-module module-device-restore
  load-module module-stream-restore
  load-module module-card-restore
  load-module module-augment-properties
  load-module module-alsa-card device_id="0" name="pci-0000_00_1b.0" 
card_name="alsa_card.pci-0000_00_1b.0" namereg_fail=false tsched=yes 
ignore_dB=no deferred_volume=yes 
card_properties="module-udev-detect.discovered=1"
  load-module module-udev-detect
  load-module module-bluetooth-discover
  load-module module-esound-protocol-unix
  load-module module-native-protocol-unix
  load-module module-zeroconf-discover 
  load-module module-gconf
  load-module module-default-device-restore
  load-module module-rescue-streams
  load-module module-always-sink
  load-module module-intended-roles
  load-module module-suspend-on-idle
  load-module module-console-kit
  load-module module-position-event-sounds
  load-module module-filter-heuristics
  load-module module-filter-apply
  load-module module-switch-on-port-available
  load-module module-cli-protocol-unix

  set-sink-volume alsa_output.pci-0000_00_1b.0.analog-stereo 0x7289
  set-sink-mute alsa_output.pci-0000_00_1b.0.analog-stereo no
  suspend-sink alsa_output.pci-0000_00_1b.0.analog-stereo yes

  set-source-volume alsa_input.pci-0000_00_1b.0.analog-stereo 0x361a
  set-source-mute alsa_input.pci-0000_00_1b.0.analog-stereo no
  suspend-source alsa_input.pci-0000_00_1b.0.analog-stereo yes
  set-source-volume alsa_output.pci-0000_00_1b.0.analog-stereo.monitor 0x10000
  set-source-mute alsa_output.pci-0000_00_1b.0.analog-stereo.monitor no
  suspend-source alsa_output.pci-0000_00_1b.0.analog-stereo.monitor yes

  set-card-profile alsa_card.pci-0000_00_1b.0 output:analog-stereo+input
  :analog-stereo

  set-default-sink alsa_output.pci-0000_00_1b.0.analog-stereo
  set-default-source alsa_input.pci-0000_00_1b.0.analog-stereo

  ### EOF

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: pulseaudio 1:1.1-0ubuntu15
  ProcVersionSignature: Ubuntu 3.2.0-24.37-generic-pae 3.2.14
  Uname: Linux 3.2.0-24-generic-pae i686
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu6
  Architecture: i386
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
     Subdevices: 2/2
     Subdevice #0: subdevice #0
     Subdevice #1: subdevice #1
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ramin     23961 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xfe6dc000 irq 292'
     Mixer name : 'Analog Devices AD1984A'
     Components : 'HDA:11d4194a,10280420,00100400'
     Controls      : 34
     Simple ctrls  : 20
  Date: Fri Apr 27 23:59:58 2012
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
  SourcePackage: pulseaudio
  UpgradeStatus: Upgraded to precise on 2012-04-27 (0 days ago)
  dmi.bios.date: 04/30/2010
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A04
  dmi.board.name: 0C27VV
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A01
  dmi.chassis.type: 6
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvrA04:bd04/30/2010:svnDellInc.:pnOptiPlex780:pvr:rvnDellInc.:rn0C27VV:rvrA01:cvnDellInc.:ct6:cvr:
  dmi.product.name: OptiPlex 780
  dmi.sys.vendor: Dell Inc.

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