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[Bug 1558507] Re: Sporadic Kernel Panic while playing videos

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** Description changed:

  Kernel panics occur sporadically in Xubuntu. The error can be triggered
- more likely by playing MP4-Videos in Firefox or VLC, but it also
- happened with the Parole player or idling. I first thought of an
+ more likely by playing MP4 and WebM Videos in Firefox or VLC, but it
+ also happened with the Parole player or idling. I first thought of an
  hardware issue, but memtest gave me no clue AND it also happened
  similarly inside a Oracle Virtual Box on another, completely different
  hardware. The only similarity was using 64-bit SMP (mine is AMD, theirs
  were Intel).
  
  Most of the time the system freezes completely, repeating the last half
  of a second of the sound that was playing over and over again. I also
  have seen a few kernel panic screens (which I am hopefully able to
  attach) with multiple kernel versions.
  
  If the error is pointing to the ATi graphic's driver, I also want to add
  that I am not using any proprietary drivers.
  
  Even though kernel panics aren't logged, I try to include everything I
  can think of. For the logs attached let me hint at the time of the last
  panic which occured at March 17th between 11:17 and 11:20 CET.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-83-generic 3.13.0-83.127
  ProcVersionSignature: Ubuntu 3.13.0-83.127-generic 3.13.11-ckt35
  Uname: Linux 3.13.0-83-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC1:  sadow      1771 F.... pulseaudio
-  /dev/snd/controlC0:  sadow      1771 F.... pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC1:  sadow      1771 F.... pulseaudio
+  /dev/snd/controlC0:  sadow      1771 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Thu Mar 17 12:14:31 2016
  HibernationDevice: RESUME=UUID=47982094-8634-4828-99c6-196f979b37ed
  InstallationDate: Installed on 2015-02-01 (409 days ago)
  InstallationMedia: Xubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140723)
  IwConfig:
-  eth0      no wireless extensions.
-  
-  lo        no wireless extensions.
+  eth0      no wireless extensions.
+ 
+  lo        no wireless extensions.
  MachineType: ECS A780GM-A
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-83-generic root=UUID=f18bc6eb-1745-4906-8c29-3d365d5f0192 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
-  linux-restricted-modules-3.13.0-83-generic N/A
-  linux-backports-modules-3.13.0-83-generic  N/A
-  linux-firmware                             1.127.20
+  linux-restricted-modules-3.13.0-83-generic N/A
+  linux-backports-modules-3.13.0-83-generic  N/A
+  linux-firmware                             1.127.20
  RfKill:
-  
+ 
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/15/2009
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 080014
  dmi.board.name: A780GM-A
  dmi.board.vendor: ECS
  dmi.board.version: 1.0
  dmi.chassis.type: 3
  dmi.chassis.vendor: ECS
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080014:bd07/15/2009:svnECS:pnA780GM-A:pvr1.0:rvnECS:rnA780GM-A:rvr1.0:cvnECS:ct3:cvr:
  dmi.product.name: A780GM-A
  dmi.product.version: 1.0
  dmi.sys.vendor: ECS

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https://bugs.launchpad.net/bugs/1558507

Title:
  Sporadic Kernel Panic while playing videos

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Kernel panics occur sporadically in Xubuntu. The error can be
  triggered more likely by playing MP4 and WebM Videos in Firefox or
  VLC, but it also happened with the Parole player or idling. I first
  thought of an hardware issue, but memtest gave me no clue AND it also
  happened similarly inside a Oracle Virtual Box on another, completely
  different hardware. The only similarity was using 64-bit SMP (mine is
  AMD, theirs were Intel).

  Most of the time the system freezes completely, repeating the last
  half of a second of the sound that was playing over and over again. I
  also have seen a few kernel panic screens (which I am hopefully able
  to attach) with multiple kernel versions.

  If the error is pointing to the ATi graphic's driver, I also want to
  add that I am not using any proprietary drivers.

  Even though kernel panics aren't logged, I try to include everything I
  can think of. For the logs attached let me hint at the time of the
  last panic which occured at March 17th between 11:17 and 11:20 CET.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-83-generic 3.13.0-83.127
  ProcVersionSignature: Ubuntu 3.13.0-83.127-generic 3.13.11-ckt35
  Uname: Linux 3.13.0-83-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  sadow      1771 F.... pulseaudio
   /dev/snd/controlC0:  sadow      1771 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Thu Mar 17 12:14:31 2016
  HibernationDevice: RESUME=UUID=47982094-8634-4828-99c6-196f979b37ed
  InstallationDate: Installed on 2015-02-01 (409 days ago)
  InstallationMedia: Xubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140723)
  IwConfig:
   eth0      no wireless extensions.

   lo        no wireless extensions.
  MachineType: ECS A780GM-A
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-83-generic root=UUID=f18bc6eb-1745-4906-8c29-3d365d5f0192 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-83-generic N/A
   linux-backports-modules-3.13.0-83-generic  N/A
   linux-firmware                             1.127.20
  RfKill:

  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/15/2009
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 080014
  dmi.board.name: A780GM-A
  dmi.board.vendor: ECS
  dmi.board.version: 1.0
  dmi.chassis.type: 3
  dmi.chassis.vendor: ECS
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080014:bd07/15/2009:svnECS:pnA780GM-A:pvr1.0:rvnECS:rnA780GM-A:rvr1.0:cvnECS:ct3:cvr:
  dmi.product.name: A780GM-A
  dmi.product.version: 1.0
  dmi.sys.vendor: ECS

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