Has this happened in the released version (released recently) not in the
beta2 version?

On Mon, May 2, 2011 at 8:53 AM, Martin Pitt <email address hidden> wrote:

> Copied to oneiric as well.
>
> ** Changed in: xserver-xorg-video-intel (Ubuntu Oneiric)
>        Status: Fix Committed => Fix Released
>
> ** Changed in: xserver-xorg-video-intel (Ubuntu Oneiric)
>    Milestone: natty-updates => None
>
> --
> You received this bug notification because you are a direct subscriber
> of a duplicate bug (769862).
> https://bugs.launchpad.net/bugs/727594
>
> Title:
>  SRU: [i915gm] GPU lockup (ESR: 0x00000001 IPEHR: 0x02000004)
>
> Status in Release Notes for Ubuntu:
>  New
> Status in X.org xf86-video-intel:
>  Confirmed
> Status in “linux” package in Ubuntu:
>  Invalid
> Status in “xserver-xorg-video-intel” package in Ubuntu:
>  Fix Released
> Status in “linux” source package in Natty:
>  Invalid
> Status in “xserver-xorg-video-intel” source package in Natty:
>  Fix Released
> Status in “linux” source package in Oneiric:
>  Invalid
> Status in “xserver-xorg-video-intel” source package in Oneiric:
>  Fix Released
>
> Bug description:
>  [Impact]
>  Severe GPU lockup affecting the i915/i945 family of Intel chips, resulting
> in unrecoverable freeze of graphics, black screen and/or corruption,
> requiring a hard reboot to reset.  The issue is widespread amongst these
> cards as evidenced by the large number of dupes; the hardware is common.
>  Most users report this is a regression in behavior from maverick.
>
>  [Background]
>  Subsequent to the code included in maverick, upstream introduced an
> optimization to relax fencing on Intel hardware.  This change reduced the
> amount of memory allocated for video buffers.  However on older (pre-G33)
> hardware such as i915/i945 this results in increased chances of GPU lockups.
>
>  [Fix for Development Version]
>  Upstream has opted to disable the relaxed fencing optimization for their
> driver release, and the change is still present in their active upstream git
> tree.  Thus, we will be pulling this fix when we update X in oneiric.
>
>  [Fix for Stable Version]
>  For natty, the attached patch is a backport of the patch that went
> upstream.  This patch makes relaxed fencing into an xorg.conf option that
> can be set, and makes it disabled by default for gen < 33 chipsets.
>
>  [Steps to Reproduce]
>  The freezes typically occur intermittently after some period of use.  For
> some people it occurs right at boot, others after minutes or hours of usage.
>  Some users find that certain activities such as web browsing makes the
> issue more likely to occur, but others do not find it correlated to any
> particular action.
>
>  However, in all cases once the system is frozen, the file
>  /sys/kernel/debug/dri/0/i915_error_state will contain an error code
>  for the IPEHR value.  The exact value appears to vary greatly from hw
>  to hw, but common values tend to be either in the 0x02xxxxxx or
>  0x7xxxxxxx range.
>
>  With this patch applied, gpu freezes should either go away entirely,
>  or become much less frequent.  Freezes which still occur but have
>  IPEHR values outside these two ranges may be unrelated bugs.
>
>  [Regression Potential]
>  The patch itself is relatively small and unlikely to introduce regression.
>
>  However, this switches optimization paths within the driver.  It
>  restores us to an older codepath so presumably this will at least be
>  as stable as maverick, however the amount of testing this path has
>  received on natty is limited.  The code is upstream and being tested
>  by the wider community and so far has not proven problematic.
>
>  Because it is disabling an optimization, it is possible some users of
>  older hardware may see performance regress, but should be no worse
>  than what was available in maverick.
>
>
>  [Original Report]
>  As instructed by Bryce I installed the following kernel on my Asus eee pc
> 701 running natty:
>  " Please test with the following kernel:
>
>    http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/current/ "
>
>  by doing sudo dpkg -i linux-image....deb
>
>  Then I ran update manager.
>
>  After rebooting I browsed with google chrome. The system froze after 5
>  minutes.
>
>  I rebooted the same kernel and immediately got this problem popup. In
>  addition there is font corruption - part of the letter t is missing in
>  the browser.
>
>  ProblemType: Crash
>  DistroRelease: Ubuntu 11.04
>  Package: xserver-xorg-video-intel 2:2.14.0-1ubuntu11
>  Uname: Linux 2.6.38-999-generic i686
>  Architecture: i386
>  Chipset: i915gm
>  CompizPlugins: No value set for
> `/apps/compiz-1/general/screen0/options/active_plugins'
>  CompositorRunning: None
>  DRM.card0.LVDS.1:
>   status: connected
>   enabled: enabled
>   dpms: On
>   modes: 800x480
>   edid-base64:
>  DRM.card0.VGA.1:
>   status: connected
>   enabled: enabled
>   dpms: On
>   modes: 1680x1050 1280x1024 1280x1024 1280x960 1152x864 1024x768 1024x768
> 1024x768 832x624 800x600 800x600 800x600 800x600 640x480 640x480 640x480
> 640x480 720x400
>   edid-base64:
> AP///////wBMLX4CMjJFTQ4RAQMOLx54KtUVpFVJmicUUFS/74CzAIGAgUBxTwEBAQEBAQEBfC6QoGAaHkAwIDYA2igRAAAaAAAA/QA4Sx5RDgAKICAgICAgAAAA/ABTeW5jTWFzdGVyCiAgAAAA/wBIOU5QNDAwMTk3CiAgAM8=
>  Date: Wed Mar  2 15:23:13 2011
>  DistUpgraded: Yes, recently upgraded Log time: 2011-02-17 19:00:58.983764
>  DistroCodename: natty
>  DistroVariant: ubuntu
>  DumpSignature: c38b9ae8 (ESR: 0x00000001 IPEHR: 0x02000004)
>  ExecutablePath: /usr/share/apport/apport-gpu-error-intel.py
>  GraphicsCard:
>   Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller
> [8086:2592] (rev 04) (prog-if 00 [VGA controller])
>     Subsystem: ASUSTeK Computer Inc. Device [1043:82d9]
>     Subsystem: ASUSTeK Computer Inc. Device [1043:82d9]
>  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110202)
>  InterpreterPath: /usr/bin/python2.7
>  MachineType: ASUSTeK Computer INC. 701
>  ProcCmdline: /usr/bin/python /usr/share/apport/apport-gpu-error-intel.py
>  ProcEnviron:
>
>  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-999-generic
> root=UUID=3893e3fd-c2b4-40ec-9810-5a9aba86cbd4 ro
> crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7
>  ProcKernelCmdLine_: BOOT_IMAGE=/boot/vmlinuz-2.6.38-999-generic
> root=UUID=3893e3fd-c2b4-40ec-9810-5a9aba86cbd4 ro
> crashkernel=384M-2G:64M,2G-:128M quiet splash vt.handoff=7
>  RelatedPackageVersions:
>   xserver-xorg             1:7.6~3ubuntu8
>   libdrm2                  2.4.23-1ubuntu3
>   xserver-xorg-video-intel 2:2.14.0-1ubuntu11
>  Renderer: Unknown
>  SourcePackage: xserver-xorg-video-intel
>  Title: [i915gm] GPU lockup c38b9ae8 (ESR: 0x00000001 IPEHR: 0x02000004)
>  UpgradeStatus: Upgraded to natty on 2011-02-24 (5 days ago)
>  UserGroups:
>
>  dmi.bios.date: 05/04/2008
>  dmi.bios.vendor: American Megatrends Inc.
>  dmi.bios.version: 1001
>  dmi.board.asset.tag: To Be Filled By O.E.M.
>  dmi.board.name: 701
>  dmi.board.vendor: ASUSTeK Computer INC.
>  dmi.board.version: x.xx
>  dmi.chassis.asset.tag: 0x00000000
>  dmi.chassis.type: 10
>  dmi.chassis.vendor: ASUSTek Computer INC.
>  dmi.chassis.version: x.x
>  dmi.modalias:
> dmi:bvnAmericanMegatrendsInc.:bvr1001:bd05/04/2008:svnASUSTeKComputerINC.:pn701:pvrx.x:rvnASUSTeKComputerINC.:rn701:rvrx.xx:cvnASUSTekComputerINC.:ct10:cvrx.x:
>  dmi.product.name: 701
>  dmi.product.version: x.x
>  dmi.sys.vendor: ASUSTeK Computer INC.
>  version.compiz: compiz 1:0.9.4-0ubuntu3
>  version.libdrm2: libdrm2 2.4.23-1ubuntu3
>  version.libgl1-mesa-glx: libgl1-mesa-glx
> 7.10.1~git20110215.cc1636b6-0ubuntu2
>  version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu8
>  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu2
>  version.xserver-xorg-video-intel: xserver-xorg-video-intel
> 2:2.14.0-1ubuntu11
>  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
> 1:0.0.16+git20110107+b795ca6e-0ubuntu5
>
>  [lspci]
>  Nux: lspci: 00:02.0 VGA compatible controller [0300]: Intel Corporation
> Mobile 915GM/GMS/910GML Express Graphics Controller [8086:2592] (r
>
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