Public bug reported:

The sound 'crackles' each time I shut down or restart my notebook. 
The 'crackling' only appears just before the power off for about two seconds.

In Ubuntu 11.10 I didn't have this problem and I didn't make any
hardware modifications sinds.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: alsa-base 1.0.25+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-34.53-generic 3.2.33
Uname: Linux 3.2.0-34-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu15
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  porquino   1892 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xd4500000 irq 45'
   Mixer name   : 'Intel Cantiga HDMI'
   Components   : 'HDA:111d7608,103c3069,00100202 
HDA:80862802,80860101,00100000'
   Controls      : 22
   Simple ctrls  : 10
Date: Sun Dec  9 23:21:07 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel successful
Symptom_Card: Built-in Audio - HDA Intel
Symptom_Jack: Speaker, Internal
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: Underruns, dropouts, or "crackling" sound
Title: [HP G61 Notebook PC, IDT 92HD75B2X5, Speaker, Internal] Underruns, 
dropouts or crackling sound
UpgradeStatus: Upgraded to precise on 2012-05-28 (194 days ago)
dmi.bios.date: 10/13/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.20
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 3069
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 21.14
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: N/A
dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.20:bd10/13/2009:svnHewlett-Packard:pnHPG61NotebookPC:pvrRev1:rvnHewlett-Packard:rn3069:rvr21.14:cvnHewlett-Packard:ct10:cvrN/A:
dmi.product.name: HP G61 Notebook PC
dmi.product.version: Rev 1
dmi.sys.vendor: Hewlett-Packard

** Affects: alsa-driver (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug precise running-unity

-- 
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https://bugs.launchpad.net/bugs/1088268

Title:
  [HP G61 Notebook PC, IDT 92HD75B2X5, Speaker, Internal] Underruns,
  dropouts or crackling sound

Status in “alsa-driver” package in Ubuntu:
  New

Bug description:
  The sound 'crackles' each time I shut down or restart my notebook. 
  The 'crackling' only appears just before the power off for about two seconds.

  In Ubuntu 11.10 I didn't have this problem and I didn't make any
  hardware modifications sinds.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-34.53-generic 3.2.33
  Uname: Linux 3.2.0-34-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu15
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  porquino   1892 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xd4500000 irq 45'
     Mixer name : 'Intel Cantiga HDMI'
     Components : 'HDA:111d7608,103c3069,00100202 
HDA:80862802,80860101,00100000'
     Controls      : 22
     Simple ctrls  : 10
  Date: Sun Dec  9 23:21:07 2012
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel successful
  Symptom_Card: Built-in Audio - HDA Intel
  Symptom_Jack: Speaker, Internal
  Symptom_PulsePlaybackTest: PulseAudio playback test successful
  Symptom_Type: Underruns, dropouts, or "crackling" sound
  Title: [HP G61 Notebook PC, IDT 92HD75B2X5, Speaker, Internal] Underruns, 
dropouts or crackling sound
  UpgradeStatus: Upgraded to precise on 2012-05-28 (194 days ago)
  dmi.bios.date: 10/13/2009
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: F.20
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3069
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 21.14
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvrF.20:bd10/13/2009:svnHewlett-Packard:pnHPG61NotebookPC:pvrRev1:rvnHewlett-Packard:rn3069:rvr21.14:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: HP G61 Notebook PC
  dmi.product.version: Rev 1
  dmi.sys.vendor: Hewlett-Packard

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