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Message #72368
[Bug 1041790]
*** Bug 81673 has been marked as a duplicate of this bug. ***
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https://bugs.launchpad.net/bugs/1041790
Title:
[snb] GPU lockup IPEHR: 0x0b160001 IPEHR: 0x0b140001, workaround
i915.semaphores=0
Status in X.org xf86-video-intel:
In Progress
Status in “linux” package in Ubuntu:
Incomplete
Status in “sandybridge-meta” package in Ubuntu:
Confirmed
Status in “xserver-xorg-video-intel” package in Ubuntu:
Triaged
Bug description:
X locks up periodically for a 2 to ten seconds at a time and this
crash log gets generated. It's significantly more than several times a
day but not quite continuous. If you indeed have this bug, that should
stop the lockups from happening. Irrespective, please file a new bug
report so your hardware may be tracked.
WORKAROUND: Edit your /etc/default/grub from:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
to:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.semaphores=0"
run the following and reboot:
sudo update-grub
The side effects of this is rendering throughput is dropped by 10%
with SNA, or as much as 3x with UXA. OpenGL performance is likely to
be reduced by about 30%. More CPU time is spent waiting for the GPU
with rc6 disabled, so increased power consumption.
ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: xserver-xorg-video-intel 2:2.20.3-0ubuntu1
Uname: Linux 3.6.0-rc3-git-20120826.1015 x86_64
ApportVersion: 2.5.1-0ubuntu2
Architecture: amd64
Chipset: sandybridge-m-gt2
Date: Sun Aug 26 16:06:32 2012
DistroCodename: quantal
DistroVariant: ubuntu
DuplicateSignature: [sandybridge-m-gt2] GPU lockup IPEHR: 0x0b160001 IPEHR: 0x0b140001 Ubuntu 12.10
EcryptfsInUse: Yes
ExecutablePath: /usr/share/apport/apport-gpu-error-intel.py
GpuHangFrequency: Continuously
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120724.2)
InterpreterPath: /usr/bin/python3.2mu
MachineType: Dell Inc. Dell System XPS L502X
ProcCmdline: /usr/bin/python3 /usr/share/apport/apport-gpu-error-intel.py
ProcEnviron:
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.6.0-rc3-git-20120826.1015 root=UUID=135c8090-427c-460a-909d-eff262cd44b6 ro quiet splash vt.handoff=7
RelatedPackageVersions:
xserver-xorg 1:7.7+1ubuntu3
libdrm2 2.4.38-0ubuntu2
xserver-xorg-video-intel 2:2.20.3-0ubuntu1
SourcePackage: xserver-xorg-video-intel
Title: [sandybridge-m-gt2] GPU lockup IPEHR: 0x0b160001 IPEHR: 0x0b140001
UdevDb: Error: [Errno 2] No such file or directory: 'udevadm'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
dmi.bios.date: 05/29/2012
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A11
dmi.board.name: 0NJT03
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnDellInc.:bvrA11:bd05/29/2012:svnDellInc.:pnDellSystemXPSL502X:pvr:rvnDellInc.:rn0NJT03:rvrA00:cvnDellInc.:ct8:cvr0.1:
dmi.product.name: Dell System XPS L502X
dmi.sys.vendor: Dell Inc.
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