compiz crashed with SIGSEGV in do_blit_copypixels()

[Alan Pope 🍺🐧🐱 🦄]

Removed laptop from docking station (it's been attached/detached a few times today) and the screen went crazy. Flickering and corruption all over the place, but coming back to a stable screen now and then. I tried to 'reset' things with display properties to change resolution but then compiz barfed.

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: compiz-core 1:0.9.9~daily13.02.04-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-4.8-generic 3.8.0-rc6
Uname: Linux 3.8.0-4-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.8-0ubuntu4
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,grid,imgpng,gnomecompat,scale,workarounds,mousepoll,regex,wall,move,place,vpswitch,resize,unitymtgrabhandles,snap,session,expo,ezoom,unityshell]
CompositorRunning: compiz
CrashCounter: 1
Date: Thu Feb 7 18:56:35 2013
DistUpgraded: 2013-01-18 10:34:11,775 DEBUG enabling apt cron job
DistroCodename: raring
DistroVariant: ubuntu
DkmsStatus:
 vboxhost, 4.2.4, 3.2.0-36-generic, x86_64: installed
 vboxhost, 4.2.4, 3.5.0-22-generic, x86_64: installed
 vboxhost, 4.2.4, 3.8.0-3-generic, x86_64: installed
 vboxhost, 4.2.4, 3.8.0-4-generic, x86_64: installed
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:21da]
InstallationDate: Installed on 2012-06-29 (222 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MachineType: LENOVO 4287CTO
MarkForUpload: True
ProcCmdline: compiz
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-4-generic root=UUID=c8438547-b9fb-46af-8012-4663c77c70e7 ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x7f8747b54d4d: mov 0x230(%rsi),%rsi
 PC (0x7f8747b54d4d) ok
 source "0x230(%rsi)" (0x00000230) not located in a known VMA region (needed readable region)!
 destination "%rsi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
 ?? () from /usr/lib/x86_64-linux-gnu/libdricore9.0.2.so.1
 GLXDoubleBuffer::copyFrontToBack() const () from /usr/lib/compiz/libopengl.so
 PrivateGLScreen::paintOutputs(std::list<CompOutput*, std::allocator<CompOutput*> >&, unsigned int, CompRegion const&) () from /usr/lib/compiz/libopengl.so
 CompositeScreen::paint(std::list<CompOutput*, std::allocator<CompOutput*> >&, unsigned int) () from /usr/lib/compiz/libcomposite.so
Title: compiz crashed with SIGSEGV in GLXDoubleBuffer::copyFrontToBack()
UpgradeStatus: Upgraded to raring on 2013-01-18 (20 days ago)
UserGroups: adm cdrom dialout dip libvirtd lpadmin plugdev sambashare sudo
dmi.bios.date: 12/05/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: 8DET67WW (1.37 )
dmi.board.asset.tag: Not Available
dmi.board.name: 4287CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr8DET67WW(1.37):bd12/05/2012:svnLENOVO:pn4287CTO:pvrThinkPadX220:rvnLENOVO:rn4287CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4287CTO
dmi.product.version: ThinkPad X220
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.9~daily13.02.04-0ubuntu1
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.41-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.2-0ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.0-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.6-0ubuntu2
xserver.bootTime: Thu Feb 7 07:42:35 2013
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.2-0ubuntu1
xserver.video_driver: intel

[Apport retracing service (apport)]

StacktraceTop:
 do_blit_copypixels (type=6144, dsty=0, dstx=0, height=768, width=1360, srcy=0, srcx=0, ctx=0x8787f0) at intel_pixel_copy.c:196
 intelCopyPixels (ctx=0x8787f0, srcx=0, srcy=0, width=1360, height=768, destx=0, desty=0, type=6144) at intel_pixel_copy.c:225
 _mesa_CopyPixels (srcx=0, srcy=0, width=1360, height=768, type=6144) at ../../../../../src/mesa/main/drawpix.c:271
 ~basic_stringstream (this=0x7fff34742160, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at /usr/include/c++/4.7/sstream:546
 PrivateShaderCache::createVertexShader (this=<optimized out>, params=...) at /build/buildd/compiz-0.9.9~daily13.02.08/plugins/opengl/src/shadercache.cpp:187

[Will Cooke (willcooke)]

As part of the big bug clear up for 16.04 LTS I am marking this bug as Wont Fix.
These types of crasher are better handled by errors.ubutnu.com which can collate similar crash reports to help us identify persitent bugs rather than one-off crashes.
Sorry we are not able to help with this specific issue. If you are still experiencing this crash, please re-open the bug and add the tag "desktop-bugscrub-reopened". See https://wiki.ubuntu.com/BigDesktopBugScrub for more information.