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[Lastique <1352525@xxxxxxxxxxxxxxxxxx>]

apport information

** Attachment added: "BootDmesg.txt"
   https://bugs.launchpad.net/bugs/1352525/+attachment/4174943/+files/BootDmesg.txt

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https://bugs.launchpad.net/bugs/1352525

Title:
  No HDMI audio output

Status in “alsa-driver” package in Ubuntu:
  Confirmed

Bug description:
  I have an ASUS N550JV laptop with Intel HD Graphics 4600 and Nvidia
  GeForce GT 750M GPUs. I'm not using Nvidia GPU, the rendering is done
  on the integrated GPU. When I connect the laptop to a Panasonic Vega
  TV through HDMI I get video output on the TV but no sound. I have
  selected the HDMI output in pavucontrol (the HDMI output is marked as
  "plugged in" there) and I can see the sound is directed to HDMI. I
  also tried to disable pulseaudio and use aplay to test ALSA output but
  there is still no sound.

  'aplay -l' output:

  **** List of PLAYBACK Hardware Devices ****
  card 0: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0]
    Subdevices: 1/1
    Subdevice #0: subdevice #0
  card 0: HDMI [HDA Intel HDMI], device 7: HDMI 1 [HDMI 1]
    Subdevices: 1/1
    Subdevice #0: subdevice #0
  card 0: HDMI [HDA Intel HDMI], device 8: HDMI 2 [HDMI 2]
    Subdevices: 1/1
    Subdevice #0: subdevice #0
  card 1: PCH [HDA Intel PCH], device 0: ALC668 Analog [ALC668 Analog]
    Subdevices: 1/1
    Subdevice #0: subdevice #0

  For all card 0 devices I tried this command line:

  aplay -D plughw:0,N /usr/share/sounds/alsa/Front_Right.wav

  and got no sound nor errors. I remember the sound was working at some
  point (I think 13.10 was installed at that time).

  lsb_release -rd
  Description:    Ubuntu 14.04 LTS
  Release:        14.04
  --- 
  ApportVersion: 2.14.1-0ubuntu3.3
  Architecture: amd64
  CurrentDesktop: KDE
  DistroRelease: Ubuntu 14.04
  InstallationDate: Installed on 2013-10-11 (304 days ago)
  InstallationMedia: Kubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  Package: alsa-driver (not installed)
  ProcVersionSignature: Ubuntu 3.13.0-33.58-generic 3.13.11.4
  Tags:  trusty
  Uname: Linux 3.13.0-33-generic x86_64
  UpgradeStatus: Upgraded to trusty on 2014-05-02 (101 days ago)
  UserGroups: adm bluetooth cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 09/17/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: N550JV.207
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: N550JV
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrN550JV.207:bd09/17/2013:svnASUSTeKCOMPUTERINC.:pnN550JV:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnN550JV:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: N550JV
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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