(In reply to comment #100)
> I have, I think, a reliable way to trigger this behavior, if that helps. It
> requires a non-trivial setup, though.
>
> I have gnome-shell running on dual monitors. The first is 1920x1200, the
> second is 1920x1080 (not sure if the resolution difference matters). If I
> run a full-screen game on The 1920x1200 monitor, I get freezes, and notes in
> the dmesg about hangcheck timers and kickrings ("stuck wait on blitter
> ring").
>
> I believe OpenGL acceleration of the desktop is important, because the
> freezes are not triggered in fluxbox, for instance. I'm not sure if the game
> itself needs to be using OpenGL, or if the full-screen window is the
> triggering factor, or something else entirely. It is important that the game
> keep the monitors distinct, and only go full screen on one. I just tried it
> on Battle for Wesnoth, and full screen there sets the monitors to mirror,
> which doesn't trigger the problem.
>
> This is on an i7 4770, if that matters.
>
> I realize this is may be difficult to put together for a test setup, but I
> thought I'd mention it.
I also have dual monitors and also gnome-shell, but I have on both
1920x1080px. I notice that when I am watching some videos on full screen
on one monitor, this is happening more often (on non full-screen work,
it's still happening)
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
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:
Confirmed
Status in “linux” package in Ubuntu:
Confirmed
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.
Temporarily disabiling semaphores seems to eliminate the problem.
E.g.:
$ sudo -s
# echo 0 > /sys/modules/i915/parameters/semaphores
[Workaround]
1. Edit your /etc/default/grub file.
2. Change this line:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
to
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.semaphores=0"
3. Then run
sudo update-grub
4. And reboot
If you indeed have this bug, that should stop the lockups from happening.
If it doesn't, then file a new bug report.
Side Effects: 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.
[Original Report]
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.
To manage notifications about this bug go to:
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