Public bug reported:

When the system load goes up, the sound of every application producing
sound gets distorted (as if the bitrate was very very low or I don't
know). I then have to restart the application I want to produce proper
sound again (rhythmbox, firefox, etc.) but I don't restart pulseaudio as
a whole (at least not manually).

Please tell me which further information you need to fix that bug.
Thanks.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: pulseaudio 1:0.9.22+stable-queue-24-g67d18-0ubuntu3.1
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
Uname: Linux 2.6.38-10-generic x86_64
NonfreeKernelModules: wl
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: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  troth      1467 F.... pulseaudio
 /dev/snd/pcmC0D0p:   troth      1467 F...m pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfe9fc000 irq 46'
   Mixer name   : 'SigmaTel STAC9228'
   Components   : 'HDA:14f12c06,14f1000f,00100000 
HDA:10951392,1028022f,00100000 HDA:83847616,1028022f,00100201'
   Controls      : 22
   Simple ctrls  : 12
CheckboxSubmission: 650aa020ee007d1cac31fc2f69f0d185
CheckboxSystem: d00f84de8a555815fa1c4660280da308
Date: Tue Jul 26 09:46:49 2011
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
ProcEnviron:
 LANGUAGE=de_DE:en
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: pulseaudio
UpgradeStatus: Upgraded to natty on 2011-06-14 (42 days ago)
dmi.bios.date: 01/07/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A08
dmi.board.name: 0WP007
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvrA08:bd01/07/2008:svnDellInc.:pnInspiron1525:pvr:rvnDellInc.:rn0WP007:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Inspiron 1525
dmi.sys.vendor: Dell Inc.

** Affects: pulseaudio (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug natty unity-2d

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https://bugs.launchpad.net/bugs/816285

Title:
  Audio gets distorted when load is high

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