Probably a duplicate of: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1321421
I would try removing the alsa-base.conf customizations (position_fix, model=auto) and using workaround in that bug. -- 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/1338137 Title: [MS-7924, Realtek ALC892, Green Line Out, Rear] Underruns, dropouts or crackling sound Status in “alsa-driver” package in Ubuntu: New Bug description: Crackling sounds occur right after playback has been started. Addtionally a very, very short part of the file/video is looped during playback, but moves on after a few moments and starts to loop the new part. When the mouse is moved, looping does not occur. The looping may change to a "regular" echo- like sound, which cannot be prevented by moving the mouse. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-30.54-generic 3.13.11.2 Uname: Linux 3.13.0-30-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: mordrak 1744 F.... pulseaudio CurrentDesktop: GNOME Date: Sat Jul 5 19:02:34 2014 InstallationDate: Installed on 2014-07-02 (3 days ago) InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel failed Symptom_Card: Internes Audio - HDA Intel Symptom_Jack: Green Line Out, Rear Symptom_Type: Underruns, dropouts, or "crackling" sound Title: [MS-7924, Realtek ALC892, Green Line Out, Rear] Underruns, dropouts or crackling sound UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/29/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: V2.1 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: H97M-G43(MS-7924) dmi.board.vendor: MSI dmi.board.version: 1.0 dmi.chassis.asset.tag: To be filled by O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: MSI dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV2.1:bd04/29/2014:svnMSI:pnMS-7924:pvr1.0:rvnMSI:rnH97M-G43(MS-7924):rvr1.0:cvnMSI:ct3:cvr1.0: dmi.product.name: MS-7924 dmi.product.version: 1.0 dmi.sys.vendor: MSI mtime.conffile..etc.modprobe.d.alsa.base.conf: 2014-07-05T18:40:34.352319 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1338137/+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
