http://www.alsa-project.org/main/index.php/XRUN_Debug
# Enable basic debugging and dump stack, check hardware pointer on the period update # Usefull to just see, if PCM stream is stopped for a reason (usually wrong audio process timing from scheduler) # And to check the values from driver echo 11 > /proc/asound/card0/pcm0p/xrun_debug https://wiki.ubuntu.com/PulseAudio/Log -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1259749 Title: [ICH4 - Intel 82801DB-ICH4, playback] Sound is distorted Status in “alsa-driver” package in Ubuntu: Incomplete Bug description: Sounds weird especially in MUSESCORE ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: alsa-base 1.0.25+dfsg-0ubuntu1.1 ProcVersionSignature: Ubuntu 3.2.0-57.87-generic 3.2.52 Uname: Linux 3.2.0-57-generic i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu17.6 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: chuck 1672 F.... pulseaudio /dev/snd/pcmC0D0p: chuck 1672 F...m pulseaudio /dev/snd/seq: chuck 2075 F.... mscore.real Card0.Amixer.info: Card hw:0 'I82801DBICH4'/'Intel 82801DB-ICH4 with ALC250 at irq 10' Mixer name : 'Realtek ALC250 rev 2' Components : 'AC97a:414c4752' Controls : 33 Simple ctrls : 21 CurrentDmesg: [ 28.280448] lib80211_crypt: registered algorithm 'CCMP' [ 39.056037] eth1: no IPv6 routers present Date: Tue Dec 10 18:22:47 2013 InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012) MarkForUpload: True PackageArchitecture: all ProcEnviron: LANGUAGE=en_US:en 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:I82801DBICH4 successful Symptom_Card: Built-in Audio - Intel 82801DB-ICH4 Symptom_PulsePlaybackTest: PulseAudio playback test successful Symptom_Type: Digital clip or distortion, or "overdriven" sound Title: [ICH4 - Intel 82801DB-ICH4, playback] Sound is distorted UpgradeStatus: Upgraded to precise on 2013-12-02 (8 days ago) dmi.bios.date: 04/06/2004 dmi.bios.vendor: Gateway dmi.bios.version: 43.01.01 dmi.board.name: Gateway M405 dmi.board.vendor: Gateway dmi.board.version: Rev 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 8 dmi.chassis.vendor: Gateway dmi.chassis.version: QPR70A01 dmi.modalias: dmi:bvnGateway:bvr43.01.01:bd04/06/2004:svnGateway:pnGatewayM405:pvr3501777:rvnGateway:rnGatewayM405:rvrRev1.0:cvnGateway:ct8:cvrQPR70A01: dmi.product.name: Gateway M405 dmi.product.version: 3501777 dmi.sys.vendor: Gateway To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1259749/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
