Probably duplicate of: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1321421
Try workaround command and mark duplicate if it works. echo "options snd-hda-intel vid=8086 pid=8ca0 snoop=0" | sudo tee /etc/modprobe.d/fix-sound-intel97.conf ** Changed in: alsa-driver (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1341898 Title: [MS-7920, Realtek ALC1150, Red Line Out, Rear] Underruns, dropouts or crackling sound Status in “alsa-driver” package in Ubuntu: Incomplete Bug description: Sound appears to have trouble buffering at times playing too fast or slow and glitching like a bad mp3. Posts here have not resolved the issue: http://askubuntu.com/questions/464877/ubuntu-14-04-sound-glitch https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1019693 - Not 100% it's the same issue http://askubuntu.com/questions/157554/choppy-stuttery-sped-up-sound- after-update ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-30.55-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/controlC1: nandemonai 2849 F.... pulseaudio /dev/snd/controlC2: nandemonai 2849 F.... pulseaudio /dev/snd/controlC0: nandemonai 2849 F.... pulseaudio CurrentDesktop: GNOME Date: Tue Jul 15 10:30:01 2014 InstallationDate: Installed on 2014-07-05 (9 days ago) InstallationMedia: Xubuntu 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: Built-in Audio - HDA Intel Symptom_Jack: Red Line Out, Rear Symptom_Type: Underruns, dropouts, or "crackling" sound Title: [MS-7920, Realtek ALC1150, Red Line Out, Rear] Underruns, dropouts or crackling sound UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/22/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: V1.0 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: Z97I GAMING AC (MS-7920) 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.:bvrV1.0:bd04/22/2014:svnMSI:pnMS-7920:pvr1.0:rvnMSI:rnZ97IGAMINGAC(MS-7920):rvr1.0:cvnMSI:ct3:cvr1.0: dmi.product.name: MS-7920 dmi.product.version: 1.0 dmi.sys.vendor: MSI To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1341898/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp