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[madbiologist <1440861@xxxxxxxxxxxxxxxxxx>]

HDMI audio on ATI/AMD Radeon cards can be enabled and disabled on the
fly by typing the following in a terminal window:

xrandr --output HDMI-0 --set audio on

or

xrandr --output HDMI-0 --set audio off

If your HDMI port is numbered differently (type "xrandr" to check) - you
might need to change HDMI-0 in the above command to HDMI-1 or HDMI-2.

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https://bugs.launchpad.net/bugs/1440861

Title:
  [Satellite L855D, ATI R6xx HDMI, Digital Out, HDMI] No sound at all

Status in alsa-driver package in Ubuntu:
  New

Bug description:
  I installed Ubuntu 14.10 last night and the sound was working. I shut
  down the laptop after which I started it today and there is no sound
  at all (Earphones or in-built speakers).

  Audio device: Advanced Micro Devices, Inc. [AMD] FCH Azalia Controller (rev 01)
  	Subsystem: Toshiba America Info Systems Device ff1e
  	Flags: bus master, slow devsel, latency 32, IRQ 48
  	Memory at f0240000 (64-bit, non-prefetchable) [size=16K]
  	Capabilities: [50] Power Management version 2
  	Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
  	Kernel driver in use: snd_hda_intel

  Please rectify.

  Best regards,
  Vinayak

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
  Uname: Linux 3.16.0-23-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/pcmC0D3p:   shenoy     2398 F...m pulseaudio
   /dev/snd/controlC0:  shenoy     2398 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Mon Apr  6 12:34:08 2015
  InstallationDate: Installed on 2015-04-06 (0 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:HDMI failed
  Symptom_Card: Built-in Audio - HDA ATI HDMI
  Symptom_Jack: Digital Out, HDMI
  Symptom_Type: No sound at all
  Title: [Satellite L855D, ATI R6xx HDMI, Digital Out, HDMI] No sound at all
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/07/2012
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: 6.20
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: Portable PC
  dmi.board.vendor: TOSHIBA
  dmi.board.version: MP
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: OEM Chassis Manufacturer
  dmi.chassis.version: OEM Chassis Version
  dmi.modalias: dmi:bvnInsydeCorp.:bvr6.20:bd11/07/2012:svnTOSHIBA:pnSatelliteL855D:pvrPSKAYU-008007:rvnTOSHIBA:rnPortablePC:rvrMP:cvnOEMChassisManufacturer:ct10:cvrOEMChassisVersion:
  dmi.product.name: Satellite L855D
  dmi.product.version: PSKAYU-008007
  dmi.sys.vendor: TOSHIBA

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