** Description changed: When having a continuous source of sound playing (like listening to music), one can hear that the volume of the music drops to 0 every few seconds (roughly every 10 seconds with a large variance, sometimes twice a second, sometimes only once a minute) and resumes the previous value after a few milliseconds (maybe 100 or so). This is really annoying and makes listening to music a pain because it results in some crackling. Strangely enough, I can even observe the behaviour in alsa-mixer. Whenever the volume drops, I can see how the sliders for Surround, Center, LFE and Side quickly get muted (I see the "MM" appear below the slider for a split second) and then resume the previous volume. On top of that, the Master slider sometimes increases by a few percent and resumes the previous level. This happens less frequent than the mutes, but is equally annoying. I can reproduce this behaviour both from a Kubuntu 13.04 LiveCD without any additional programs installed as well as from the command line without running X. Furthermore, Kubuntu 12.10 and 12.04 LTS already had this problem. I tried uninstalling pulseaudio which did not solve the problem. Upgrading to the latest alsa version as listed under <https://wiki.ubuntu.com/Audio/UpgradingAlsa> did not solve the problem either (I could only use the DKMS solution because apt couldn't find the - snapshot packages after adding the audio-dev repository) The problem - does not occur under Windows, so I can more or less certainly eliminate - a h/w-problem... + snapshot packages after adding the audio-dev repository) I disconnected + the headphones as well as the mic, no change... The problem does not + occur under Windows, so I can more or less certainly eliminate a + h/w-problem... ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.8.0-21.32-generic 3.8.8 Uname: Linux 3.8.0-21-generic x86_64 ApportVersion: 2.9.2-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: langnert 2323 F.... pulseaudio CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied Date: Thu May 23 13:48:45 2013 InstallationDate: Installed on 2013-05-23 (0 days ago) InstallationMedia: Kubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) 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 Headphone Out, Front Symptom_PulseAudioLog: Symptom_Type: Underruns, dropouts, or "crackling" sound Title: [System Product Name, Realtek ALC892, Green Headphone Out, Front] 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
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1183366 Title: Audio volume drops to 0 for a few milliseconds every few seconds To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1183366/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
