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[AntAgna <AntoineW@xxxxxxxxxxxx>]

I have tested 3.19.0-15 and 3.19.0-16 and they do not exhibit the
problem (I get the same output from aplay -l as above).

So I can confirm that the problem started with 3.19.0-17 and is still
present in 3.19.0-18.

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https://bugs.launchpad.net/bugs/1457697

Title:
  [Vivid] kernel 3.19.0-17 fails to find HDMI sound output

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Fits with description in bug #1453447
  I have been asked by Christopher M. Penalver to sumit a new bug.

  Hardware :
  MSI ProBox23 (Intel H81 chipset)
  TV Connected to the HDMI port

  Computer was runnung Ubuntu 14.10 with functionning HDMI audio.

  After upgrading to 15.04, HDMI is not listed in the audio playback
  devices.

  Audio works normally if I select an older kernel version.

  Kernel versions that cause problem : 3.19.0-17 and 3.19.0-18
  Kernel version not causing the problem : 3.16.0-38

  Here is the output when listing audio playback devices on 3.19.0-18
  antoine@Salon:~$ aplay -l
  **** Liste des Périphériques Matériels PLAYBACK ****
  carte 1: PCH [HDA Intel PCH], périphérique 0: ALC887-VD Analog [ALC887-VD Analog]
    Sous-périphériques: 1/1
    Sous-périphérique #0: subdevice #0
  antoine@Salon:~$ uname -a
  Linux Salon 3.19.0-18-generic #18-Ubuntu SMP Tue May 19 18:31:35 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

  I will add a comment showing the result of these commands from
  3.16.0-38 later.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-18-generic 3.19.0-18.18
  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
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D0p', '/dev/snd/by-path', '/dev/snd/controlC1', '/dev/snd/timer', '/dev/snd/seq'] failed with exit code 1:
  CurrentDesktop: Unity
  Date: Thu May 21 19:25:32 2015
  HibernationDevice: RESUME=UUID=a8a7a46c-693f-4d19-86e4-f3f23054d7a4
  InstallationDate: Installed on 2013-11-23 (544 days ago)
  InstallationMedia: This
  JournalErrors: Error: command ['journalctl', '-b', '--priority', 'warning'] failed with exit code 1: No journal files were found.
  MachineType: MSI MS-7799
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-18-generic root=UUID=e9c33ba8-b3de-4e30-9cce-3094bd5d1d96 ro quiet splash vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-18-generic N/A
   linux-backports-modules-3.19.0-18-generic  N/A
   linux-firmware                             1.143.1
  SourcePackage: linux
  UpgradeStatus: Upgraded to vivid on 2015-05-19 (2 days ago)
  WifiSyslog:
   
  dmi.bios.date: 03/25/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: V10.0B19
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: H81TI (MS-7799)
  dmi.board.vendor: MSI
  dmi.board.version: 2.1
  dmi.chassis.asset.tag: To be filled by O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: MSI
  dmi.chassis.version: 2.1
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV10.0B19:bd03/25/2014:svnMSI:pnMS-7799:pvr2.1:rvnMSI:rnH81TI(MS-7799):rvr2.1:cvnMSI:ct3:cvr2.1:
  dmi.product.name: MS-7799
  dmi.product.version: 2.1
  dmi.sys.vendor: MSI

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