[snb] GPU lockup IPEHR: 0xffa74777 (!= *ACTHD)

[xidoc]

I had bug in the screen

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-16.36-generic 3.13.5
Uname: Linux 3.13.0-16-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
Chipset: sandybridge-m-gt1
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Sun Mar 9 15:16:59 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
DuplicateSignature: [sandybridge-m-gt1] GPU lockup IPEHR: 0xffa74777 IPEHR: 0x0b140001 Ubuntu 14.04
ExecutablePath: /usr/share/apport/apport-gpu-error-intel.py
GpuHangFrequency: I don't know
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0106] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Samsung Electronics Co Ltd Device [144d:c652]
InstallationDate: Installed on 2014-03-09 (0 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140309)
InterpreterPath: /usr/bin/python3.4
MachineType: SAMSUNG ELECTRONICS CO., LTD. 300E4C/300E5C/300E7C
ProcCmdline: /usr/bin/python3 /usr/share/apport/apport-gpu-error-intel.py
ProcEnviron:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-16-generic.efi.signed root=UUID=f8bfbd05-21d5-4db1-b3a0-d71ba2de8d38 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 xserver-xorg 1:7.7+1ubuntu8
 libdrm2 2.4.52-1
 xserver-xorg-video-intel 2:2.99.910-0ubuntu1
SourcePackage: xserver-xorg-video-intel
Title: [sandybridge-m-gt1] GPU lockup IPEHR: 0xffa74777 IPEHR: 0x0b140001
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

dmi.bios.date: 11/01/2013
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: P09RAQ
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: NP300E5C-AF5FR
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: FAB1
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrP09RAQ:bd11/01/2013:svnSAMSUNGELECTRONICSCO.,LTD.:pn300E4C/300E5C/300E7C:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP300E5C-AF5FR:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
dmi.product.name: 300E4C/300E5C/300E7C
dmi.product.version: 0.1
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
version.compiz: compiz 1:0.9.11+14.04.20140305-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0~rc3-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0~rc3-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Sun Mar 9 15:18:07 2014
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 5539
 vendor CMO
xserver.version: 2:1.15.0-1ubuntu6

[Chris Wilson (ickle)]

Cause unknown. It looks like the last byte to be parsed was from a mesa batch, but the value in the register does not match that from memory - bad TLBs?

[penalvch (penalvch)]

xidoc, any change for you updating to the Vivid enablement stack as outlined in https://wiki.ubuntu.com/Kernel/LTSEnablementStack ?

[Launchpad Janitor (janitor)]

[Expired for xserver-xorg-video-intel (Ubuntu) because there has been no activity for 60 days.]