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[MicWit <michaelwitten82@xxxxxxxxx>]

@daniel, thanks for that.  I think even though there are fixes, its not
a simple procedure (especially for new ubuntu users) as some fixes work
for some people but not others.

@dogmatic do this in terminal:
Sudo gedit /etc/modprobe.d/alsa-base.conf
And add the line:
options snd-hda-intel vid=8086 pid=8ca0 snoop=0
Save, exit, reboot.

That fixed it for me. Fixed starcraft and everything!

The reason it took me a while to update what fixes it is the sound
stopped working all together. Took me a while (and a total reinstall) to
realise it was the duel boot to windows (2 seperate hdds). Windows wont
give anything else access to the soundcard! So for anyone with this
chipset duel booting, simple solution, dont restart from windows to boot
into ubuntu, shut down and power up again. If this still fails, unplug
the computer (or if a laptop take the battery out) for 15sec, plug it
back in AND WAIT 15SEC, then boot into ubuntu and see if it works. This
is for if the sound doesn't work at all, for the skipping and scratchy
sound, add the line to alsa-base.conf

-- 
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:
  Triaged

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.

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