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[Bill Danielson <1317865@xxxxxxxxxxxxxxxxxx>]

The workaround didn't work for me.    My HDMI audio interfaces still weren't found
by the kernel.

While if eliminates the kernel message about duplicate symbols, the kernel 
now can't find the routines needed for the power_well
stuff because It thinks those are in the bdw driver and so it doesn't initialize the HDMI audio devices.

The issue seems to be that with two drivers with the same symbols (i915 and i915_bdw) ,
moddep creates symbols files with some aliases pointing to i915_bdw and some pointing
to i915.

I had to rename i915_bwd_ko file to i915_bwd_konomore and then
run depmod -a to get a reasonable symbols file that only has aliases to load i915.ko.

After that,  my HDMI audio interfaces were working again.

It there a way to tell depmod to ignore certain kernel modules?

-- 
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1317865

Title:
  8086:0412 [Gigabyte Z87X-UD3H] bug in the Ubuntu backport of BDW stuff
  for 14.04, where it tries to treat your hardware as Broadwell, and
  gets confused when your hardware behaves like Haswell.

Status in “linux” package in Ubuntu:
  Invalid
Status in “linux” source package in Trusty:
  Triaged

Bug description:
  bug in the Ubuntu backport of BDW stuff for 14.04, where it tries to
  treat your hardware as Broadwell, and gets confused when your hardware
  behaves like Haswell.

  WORKAROUND: Blacklist i915_bdw

  ---
  AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.13.0-24-generic.
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  akawolf    4092 F.... pulseaudio
  Card1.Amixer.info:
   Card hw:1 'PCH'/'HDA Intel PCH at 0xf0530000 irq 44'
     Mixer name	: 'Realtek ALC898'
     Components	: 'HDA:10ec0899,1458a002,00100003'
     Controls      : 63
     Simple ctrls  : 25
  CurrentDesktop: KDE
  DistroRelease: Ubuntu 14.04
  InstallationDate: Installed on 2013-06-30 (313 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  IwConfig:
   eth0      no wireless extensions.

   lo        no wireless extensions.
  MachineType: Gigabyte Technology Co., Ltd. Z87X-UD3H
  Package: linux 3.8.0.35.53 [origin: unknown]
  PackageArchitecture: amd64
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=19480476-0eee-4186-ad56-112e81e19c81 ro quiet splash vt.handoff=7
  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
  RfKill:

  Tags: trusty third-party-packages
  Uname: Linux 3.13.0-24-generic x86_64
  UnreportableReason: This is not an official Ubuntu package. Please remove any third party package and try again.
  UpgradeStatus: Upgraded to trusty on 2014-02-28 (69 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 05/16/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F5
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: Z87X-UD3H-CF
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF5:bd05/16/2013:svnGigabyteTechnologyCo.,Ltd.:pnZ87X-UD3H:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ87X-UD3H-CF:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: Z87X-UD3H
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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