Okay I just noticed that the sound notifier actually shows the volume going to 100% for an instant before coming back down to its previous level.
-- 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/1213769 Title: [ASUS P8Z68-V PRO, Realtek ALC892, Green Line Out, Rear] Popping sound or crackle every few seconds while playing audio Status in “alsa-driver” package in Ubuntu: New Bug description: Recent regression. Options snd-hda-intel position_fix=2 makes the pop sound a little softer, but does not eliminate it. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.11.0-2.5-generic 3.11.0-rc5 Uname: Linux 3.11.0-2-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.12-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: omer 3421 F.... pulseaudio /dev/snd/controlC1: omer 3421 F.... pulseaudio /dev/snd/controlC0: omer 3421 F.... pulseaudio /dev/snd/pcmC0D0p: omer 3421 F...m pulseaudio Date: Sun Aug 18 23:26:33 2013 InstallationDate: Installed on 2013-07-05 (44 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130704) MarkForUpload: True PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_Jack: Green Line Out, Rear Symptom_Type: Underruns, dropouts, or "crackling" sound Title: [System Product Name, Realtek ALC892, Green Line Out, Rear] Underruns, dropouts or crackling sound UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/09/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0501 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: P8Z68-V PRO 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: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0501:bd05/09/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP8Z68-VPRO:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer mtime.conffile..etc.modprobe.d.alsa.base.conf: 2013-08-18T23:23:04.428117 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1213769/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp