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[Bug 1378752] [NEW] Crackling in PulseAudio when using src-linear or src-sinc-fastest resamplers with 22050Hz audio

 

Public bug reported:

On my system, I had problems with both excess CPU usage and tried to
resolve them by using a simpler resampling algorithm. However, that
resulted in crackling audio from DOSBox and Windows 3.1 games running
under Wine 1.2.x.

(Both are configured to output audio at 22050Hz, with which ALSA dmix
has no problem, and, in the case of the Windows 3.1 games, that's not
something that can be reconfigured as far as I know.)

Nothing I changed seemed to help and I was forced to return to speex-
float-1.

(As such, the pulseaudio config files in the debug dump don't represent
PA in a broken configuration... just one that consumes more CPU than I'd
like it to.)

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: pulseaudio 1:4.0-0ubuntu11
ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
Uname: Linux 3.13.0-35-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
CurrentDesktop: LXDE
Date: Wed Oct  8 06:28:19 2014
InstallationDate: Installed on 2014-08-01 (68 days ago)
InstallationMedia: Lubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
SourcePackage: pulseaudio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/07/2011
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F2
dmi.board.name: GA-880GMA-USB3
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd03/07/2011:svnGigabyteTechnologyCo.,Ltd.:pnGA-880GMA-USB3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-880GMA-USB3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-880GMA-USB3
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
modified.conffile..etc.pulse.daemon.conf: [modified]
modified.conffile..etc.pulse.default.pa: [modified]
mtime.conffile..etc.pulse.daemon.conf: 2014-10-08T06:21:40.701763
mtime.conffile..etc.pulse.default.pa: 2014-10-08T02:32:14.607127

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


** Tags: amd64 apport-bug third-party-packages trusty

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https://bugs.launchpad.net/bugs/1378752

Title:
  Crackling in PulseAudio when using src-linear or src-sinc-fastest
  resamplers with 22050Hz audio

Status in “pulseaudio” package in Ubuntu:
  New

Bug description:
  On my system, I had problems with both excess CPU usage and tried to
  resolve them by using a simpler resampling algorithm. However, that
  resulted in crackling audio from DOSBox and Windows 3.1 games running
  under Wine 1.2.x.

  (Both are configured to output audio at 22050Hz, with which ALSA dmix
  has no problem, and, in the case of the Windows 3.1 games, that's not
  something that can be reconfigured as far as I know.)

  Nothing I changed seemed to help and I was forced to return to speex-
  float-1.

  (As such, the pulseaudio config files in the debug dump don't
  represent PA in a broken configuration... just one that consumes more
  CPU than I'd like it to.)

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: pulseaudio 1:4.0-0ubuntu11
  ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
  Uname: Linux 3.13.0-35-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  CurrentDesktop: LXDE
  Date: Wed Oct  8 06:28:19 2014
  InstallationDate: Installed on 2014-08-01 (68 days ago)
  InstallationMedia: Lubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
  SourcePackage: pulseaudio
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/07/2011
  dmi.bios.vendor: Award Software International, Inc.
  dmi.bios.version: F2
  dmi.board.name: GA-880GMA-USB3
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd03/07/2011:svnGigabyteTechnologyCo.,Ltd.:pnGA-880GMA-USB3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-880GMA-USB3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
  dmi.product.name: GA-880GMA-USB3
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.
  modified.conffile..etc.pulse.daemon.conf: [modified]
  modified.conffile..etc.pulse.default.pa: [modified]
  mtime.conffile..etc.pulse.daemon.conf: 2014-10-08T06:21:40.701763
  mtime.conffile..etc.pulse.default.pa: 2014-10-08T02:32:14.607127

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