Running 12.04 and updated MB to Gigabyte Z97P-D3 and I got crackling sound issue, first thought it were my sound system.
echo "options snd-hda-intel snoop=0" > /etc/modprobe.d/fix-sound-intel97 (done as root, of course) cured this issue after reboot. vid option is not working (at least on 12.04), but since there is only one intel hda, I can live with that. Side note: I've completely disabled XHCI in BIOS to get rid of USB issues and Youtube Video slowdowns due to syslog being spilled by error messages due to USB 3.0. Now my system runs fine even on 12.04 (though I did not yet test if my Windows 7 likes that - but who cares, its only for gaming :D ) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1321421 Title: 8086:8ca0 Sound output distorted/unusable with Intel Z97/H97 Status in “linux” package in Ubuntu: Fix Released Bug description: I get horribly cracking sound and distortion with my ne AS Rock Fatal1ty H97 Performance Mainboard. This MB is using PuritySound 2 Engine powered by the Realtek ALC1150 Chipset. Here is some ALSA Info: http://www.alsa- project.org/db/?f=44b12e252a2cf7ebb75ab3e23d5cef072af6c328 Following commit fixes this problem: https://kernel.googlesource.com/pub/scm/linux/kernel/git/tiwai/sound/+/77f07800cb456bed6e5c345e6e4e83e8eda62437 WORKAROUND: Create a modprobe.d file with command: echo "options snd-hda-intel vid=8086 pid=8ca0 snoop=0" | sudo tee /etc/modprobe.d/fix-sound-intel97.conf ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.1 Architecture: amd64 CurrentDesktop: Unity Date: Tue May 20 21:03:18 2014 InstallationDate: Installed on 2014-05-20 (0 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) PackageArchitecture: all SourcePackage: alsa-driver UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/28/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P1.10 dmi.board.name: H97 Performance dmi.board.vendor: ASRock dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.10:bd04/28/2014:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnH97Performance:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. --- ApportVersion: 2.14.1-0ubuntu3.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: ben 1445 F.... pulseaudio /dev/snd/controlC0: ben 1445 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=f35e4cc7-52c2-4fe7-9e4b-405280ed487f InstallationDate: Installed on 2014-05-20 (2 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M. NonfreeKernelModules: nvidia Package: linux (not installed) ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-24-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9 RelatedPackageVersions: linux-restricted-modules-3.13.0-24-generic N/A linux-backports-modules-3.13.0-24-generic N/A linux-firmware 1.127.2 Tags: trusty Uname: Linux 3.13.0-24-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 04/28/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P1.10 dmi.board.name: H97 Performance dmi.board.vendor: ASRock dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.10:bd04/28/2014:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnH97Performance:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1321421/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp