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[Patrick Goetz <pgoetz@xxxxxxxxxxxxxxx>]

I'm having exactly the same problem with a Gigabyte Z97 MB which has the
Realtek ALC1150 audio chip.  Howver, in my case, I'm trying to run a
current version of Arch linux, meaning that the linux kernel, sound
drivers, and pulseaudio are maximally up to date as of August 17, 2015.

So in particular, this is not an Ubuntu-specific problem at all, but
rather appears to have something to so with the audio device driver
and/or pulseaudio.

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https://bugs.launchpad.net/bugs/1444562

Title:
  [Z97X-SLI, Realtek ALC1150, Green Line Out, Rear] No sound at all
  (analog audio not working)

Status in alsa-driver package in Ubuntu:
  Confirmed

Bug description:
  USB headphones are working but the colored line-outs do not work. I
  just replaced win10 where it worked just fine.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.16.0-34.47-generic 3.16.7-ckt8
  Uname: Linux 3.16.0-34-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8.3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC3:  ake1       1770 F.... pulseaudio
   /dev/snd/controlC2:  ake1       1770 F.... pulseaudio
   /dev/snd/controlC0:  ake1       1770 F.... pulseaudio
   /dev/snd/controlC1:  ake1       1770 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Wed Apr 15 18:12:02 2015
  InstallationDate: Installed on 2015-04-15 (0 days ago)
  InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed
  Symptom_Card: Built-in Audio - HDA Intel PCH
  Symptom_DevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC3:  ake1       1770 F.... pulseaudio
   /dev/snd/controlC2:  ake1       1770 F.... pulseaudio
   /dev/snd/controlC0:  ake1       1770 F.... pulseaudio
   /dev/snd/controlC1:  ake1       1770 F.... pulseaudio
  Symptom_Jack: Green Line Out, Rear
  Symptom_Type: No sound at all
  Title: [Z97X-SLI, Realtek ALC1150, Green Line Out, Rear] No sound at all
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/25/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F3
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: Z97X-SLI-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.:bvrF3:bd04/25/2014:svnGigabyteTechnologyCo.,Ltd.:pnZ97X-SLI:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ97X-SLI-CF:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: Z97X-SLI
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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