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[Le Gluon Du Net <legluondunet@xxxxxxx>]

Public bug reported:

Hello,

my computer is connected to my TV screen with HDMI. 
I'm using HDMI displayport audio out in pulseaudio.
I hear crackling and echoing.

If I use this workaround:

echo '# add support for intel audio
options snd-hda-intel vid=8086 pid=8ca0 snoop=0' >> /etc/modprobe.d/alsa-base.conf

it works but after several minutes I have an important delay between
video and audio.

Thank you for your help.

LGDN.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: alsa-base 1.0.25+dfsg-0ubuntu4
ProcVersionSignature: Ubuntu 3.16.0-31.41-generic 3.16.7-ckt5
Uname: Linux 3.16.0-31-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.14.7-0ubuntu8.2
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC2:  magneto    1830 F.... pulseaudio
 /dev/snd/pcmC1D3p:   magneto    1830 F...m pulseaudio
 /dev/snd/controlC1:  magneto    1830 F.... pulseaudio
 /dev/snd/controlC0:  magneto    1830 F.... pulseaudio
CurrentDesktop: Unity
Date: Mon Mar  9 12:30:14 2015
InstallationDate: Installed on 2014-06-19 (263 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Generic failed
Symptom_Card: HD-Audio Generic - HD-Audio Generic
Symptom_Jack: Digital Out, HDMI
Symptom_Type: Underruns, dropouts, or "crackling" sound
Title: [All Series, ATI R6xx HDMI, Digital Out, HDMI] Underruns, dropouts or crackling sound
UpgradeStatus: Upgraded to utopic on 2015-03-09 (0 days ago)
dmi.bios.date: 12/13/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1707
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: GRYPHON Z87
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1707:bd12/13/2013:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnGRYPHONZ87:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: All Series
dmi.product.version: System Version
dmi.sys.vendor: ASUS

** Affects: alsa-driver (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug utopic

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1429809

Title:
  ATI HDMI audio: echoing and crackling sound

Status in alsa-driver package in Ubuntu:
  New

Bug description:
  Hello,

  my computer is connected to my TV screen with HDMI. 
  I'm using HDMI displayport audio out in pulseaudio.
  I hear crackling and echoing.

  If I use this workaround:

  echo '# add support for intel audio
  options snd-hda-intel vid=8086 pid=8ca0 snoop=0' >> /etc/modprobe.d/alsa-base.conf

  it works but after several minutes I have an important delay between
  video and audio.

  Thank you for your help.

  LGDN.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.16.0-31.41-generic 3.16.7-ckt5
  Uname: Linux 3.16.0-31-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.14.7-0ubuntu8.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC2:  magneto    1830 F.... pulseaudio
   /dev/snd/pcmC1D3p:   magneto    1830 F...m pulseaudio
   /dev/snd/controlC1:  magneto    1830 F.... pulseaudio
   /dev/snd/controlC0:  magneto    1830 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Mon Mar  9 12:30:14 2015
  InstallationDate: Installed on 2014-06-19 (263 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Generic failed
  Symptom_Card: HD-Audio Generic - HD-Audio Generic
  Symptom_Jack: Digital Out, HDMI
  Symptom_Type: Underruns, dropouts, or "crackling" sound
  Title: [All Series, ATI R6xx HDMI, Digital Out, HDMI] Underruns, dropouts or crackling sound
  UpgradeStatus: Upgraded to utopic on 2015-03-09 (0 days ago)
  dmi.bios.date: 12/13/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1707
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: GRYPHON Z87
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1707:bd12/13/2013:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnGRYPHONZ87:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: All Series
  dmi.product.version: System Version
  dmi.sys.vendor: ASUS

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