compiz crashed with SIGSEGV in CompWindow::id() from getPaintMask() [compizminimizedwindowhandler.h] from unity::UnityWindow::glPaint()

[ChemicalKicks]

I was changing the desktop background through the settings panel, when I went to close the options with the red x I got a warning that I would lose any unsaved work so I decided to wait. About 1 minute later I lost all the menus/windows and buttons, all I was left with was the background image.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: unity 5.0.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-8.15-generic 3.2.0
Uname: Linux 3.2.0-8-generic i686
ApportVersion: 1.90-0ubuntu2
Architecture: i386
Date: Sun Jan 15 13:26:58 2012
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
ProcCmdline: compiz
SegvAnalysis:
 Segfault happened at: 0x8083a27 <_ZN10CompWindow2idEv+7>: mov 0x10(%eax),%eax
 PC (0x08083a27) ok
 source "0x10(%eax)" (0x00000035) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 CompWindow::id() ()
 unity::UnityWindow::glPaint(GLWindowPaintAttrib const&, GLMatrix const&, CompRegion const&, unsigned int) () from /usr/lib/compiz/libunityshell.so
 GLWindow::glPaint(GLWindowPaintAttrib const&, GLMatrix const&, CompRegion const&, unsigned int) () from /usr/lib/compiz/libopengl.so
 PrivateGLScreen::paintOutputRegion(GLMatrix const&, CompRegion const&, CompOutput*, unsigned int) () from /usr/lib/compiz/libopengl.so
 GLScreen::glPaintOutput(GLScreenPaintAttrib const&, GLMatrix const&, CompRegion const&, CompOutput*, unsigned int) () from /usr/lib/compiz/libopengl.so
Title: compiz crashed with SIGSEGV in CompWindow::id()
UpgradeStatus: Upgraded to precise on 2012-01-15 (0 days ago)
UserGroups: admin

[Apport retracing service (apport)]

StacktraceTop:
 CompWindow::id (this=0xb3e415f0) at /build/buildd/compiz-0.9.6+bzr20110929/src/window.cpp:5590
 getPaintMask (this=<optimized out>) at /build/buildd/unity-5.0.0/plugins/unityshell/src/compizminimizedwindowhandler.h:276
 unity::UnityWindow::glPaint (this=0xb3ece978, attrib=..., matrix=..., region=..., mask=2) at /build/buildd/unity-5.0.0/plugins/unityshell/src/unityshell.cpp:1685
 GLWindow::glPaint (this=0xb3e41528, attrib=..., transform=..., region=..., mask=2) at /build/buildd/compiz-0.9.6+bzr20110929/plugins/opengl/src/paint.cpp:1223
 PrivateGLScreen::paintOutputRegion (this=0x8ada378, transform=..., region=..., output=0x8aa0100, mask=11) at /build/buildd/compiz-0.9.6+bzr20110929/plugins/opengl/src/paint.cpp:282

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Sam Spilsbury (smspillaz)]

Is this still happening?

A change relevant to this was commited a few months ago.

[Michele Olivo (micheleolivo)]

I think no, for me.

[Giorgio Wicklein (giowck)]

I had this crash last week or so.

[Daniel van Vugt (vanvugt)]

Sam, we're getting duplicates to this bug almost daily so yes. The most recent duplicates are all running 12.04 with Unity 5.8. It's definitely still happening.

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 851982, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.