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[Michel Verbist <1458136@xxxxxxxxxxxxxxxxxx>]

I'm connected through HDMI to my monitor, and my monitor plays the
sound, normally.

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https://bugs.launchpad.net/bugs/1458136

Title:
  [MS-7823, Realtek ALC892, Green SPDIF Out, Rear] No sound at all
  snd_hda_intel Cannot turn on display power on i915

Status in alsa-driver package in Ubuntu:
  Incomplete

Bug description:
  after the last update, and restart, the sound didn't work anymore

  output from 'uname -a':
  Linux poseidon 3.19.0-18-generic #18-Ubuntu SMP Tue May 19 18:31:35 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.19.0-18.18-generic 3.19.6
  Uname: Linux 3.19.0-18-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  michel     1967 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Sat May 23 08:54:23 2015
  InstallationDate: Installed on 2014-10-18 (216 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed
  Symptom_Card: Intern geluid - HDA Intel PCH
  Symptom_DevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  michel     1967 F.... pulseaudio
  Symptom_Jack: Green SPDIF Out, Rear
  Symptom_Type: No sound at all
  Title: [MS-7823, Realtek ALC892, Green SPDIF Out, Rear] No sound at all
  UpgradeStatus: Upgraded to vivid on 2015-04-27 (25 days ago)
  dmi.bios.date: 06/07/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: V1.2
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: H87M-G43 (MS-7823)
  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.:bvrV1.2:bd06/07/2013:svnMSI:pnMS-7823:pvr1.0:rvnMSI:rnH87M-G43(MS-7823):rvr1.0:cvnMSI:ct3:cvr1.0:
  dmi.product.name: MS-7823
  dmi.product.version: 1.0
  dmi.sys.vendor: MSI

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