Public bug reported:
I see this output from "pulseaudio," but nothing is logged when the
sound crackles:
W: [pulseaudio] sink.c: Default and alternate sample rates are the same.
W: [pulseaudio] source.c: Default and alternate sample rates are the same.
E: [alsa-sink-Intel ICH] alsa-sink.c: ALSA woke us up to write new data to the
device, but there was actually nothing to write!
E: [alsa-sink-Intel ICH] alsa-sink.c: Most likely this is a bug in the ALSA
driver 'snd_intel8x0'. Please report this issue to the ALSA developers.
E: [alsa-sink-Intel ICH] alsa-sink.c: We were woken up with POLLOUT set --
however a subsequent snd_pcm_avail() returned 0 or another value < min_avail.
W: [alsa-sink-USB Audio] protocol-native.c: Failed to push data into queue
This is all with default settings. Disabling the Pulse Audio scheduler
doesn't help. The audio output should be flawless. It's practically
impossible to figure out ALSA, even with the Internet.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: pulseaudio 1:4.0-0ubuntu11
ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7
Uname: Linux 3.13.0-37-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: westonlast 3706 F.... pulseaudio
westonlast 6055 F.... pulseaudio
/dev/snd/controlC1: westonlast 3706 F.... pulseaudio
westonlast 6055 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun Jan 25 01:33:09 2015
InstallationDate: Installed on 2014-10-03 (114 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release i386 (20140722.2)
SourcePackage: pulseaudio
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:DAC successful
Symptom_Card: USB Audio DAC - USB Audio DAC
Symptom_PulsePlaybackTest: PulseAudio playback test failed
Symptom_Type: Underruns, dropouts, or "crackling" sound
Title: [USB-Audio - USB Audio DAC, playback] Underruns, dropouts or crackling
sound
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/03/2006
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1204
dmi.board.asset.tag: alienware
dmi.board.name: A8N32-SLI-Deluxe
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: alienware
dmi.chassis.version: alienware
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr1204:bd04/03/2006:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnA8N32-SLI-Deluxe:rvrRev1.xx:cvnalienware:ct3:cvralienware:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
modified.conffile..etc.pulse.default.pa: [modified]
mtime.conffile..etc.pulse.default.pa: 2015-01-24T22:30:13.991660
** Affects: pulseaudio (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 trusty
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to pulseaudio in Ubuntu.
https://bugs.launchpad.net/bugs/1414402
Title:
[USB-Audio - USB Audio DAC, playback] Ocassional crackling, rarer
light hissing in one of the two channels
Status in pulseaudio package in Ubuntu:
New
Bug description:
I see this output from "pulseaudio," but nothing is logged when the
sound crackles:
W: [pulseaudio] sink.c: Default and alternate sample rates are the same.
W: [pulseaudio] source.c: Default and alternate sample rates are the same.
E: [alsa-sink-Intel ICH] alsa-sink.c: ALSA woke us up to write new data to
the device, but there was actually nothing to write!
E: [alsa-sink-Intel ICH] alsa-sink.c: Most likely this is a bug in the ALSA
driver 'snd_intel8x0'. Please report this issue to the ALSA developers.
E: [alsa-sink-Intel ICH] alsa-sink.c: We were woken up with POLLOUT set --
however a subsequent snd_pcm_avail() returned 0 or another value < min_avail.
W: [alsa-sink-USB Audio] protocol-native.c: Failed to push data into queue
This is all with default settings. Disabling the Pulse Audio
scheduler doesn't help. The audio output should be flawless. It's
practically impossible to figure out ALSA, even with the Internet.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: pulseaudio 1:4.0-0ubuntu11
ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7
Uname: Linux 3.13.0-37-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: westonlast 3706 F.... pulseaudio
westonlast 6055 F.... pulseaudio
/dev/snd/controlC1: westonlast 3706 F.... pulseaudio
westonlast 6055 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun Jan 25 01:33:09 2015
InstallationDate: Installed on 2014-10-03 (114 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release i386
(20140722.2)
SourcePackage: pulseaudio
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:DAC successful
Symptom_Card: USB Audio DAC - USB Audio DAC
Symptom_PulsePlaybackTest: PulseAudio playback test failed
Symptom_Type: Underruns, dropouts, or "crackling" sound
Title: [USB-Audio - USB Audio DAC, playback] Underruns, dropouts or crackling
sound
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/03/2006
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1204
dmi.board.asset.tag: alienware
dmi.board.name: A8N32-SLI-Deluxe
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: alienware
dmi.chassis.version: alienware
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr1204:bd04/03/2006:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnA8N32-SLI-Deluxe:rvrRev1.xx:cvnalienware:ct3:cvralienware:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
modified.conffile..etc.pulse.default.pa: [modified]
mtime.conffile..etc.pulse.default.pa: 2015-01-24T22:30:13.991660
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