Comment 0 for bug 1558507

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 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