Application: kwin (4.9.1)
KDE Platform Version: 4.9.1
Qt Version: 4.8.2
Operating System: Linux 3.2.0-31-generic x86_64
Distribution: Ubuntu 12.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
The crash occurred after logon, the system was almost finished loading and the program crashed.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[KCrash Handler]
#6  __memcpy_sse2 () at ../sysdeps/x86_64/multiarch/../memcpy.S:428
#7  0x00007fb774acb856 in __indirect_glProgramParameters4fvNV (target=1, index=32656996, num=2020099960, params=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/string3.h:52
#8  0x00007fb75c4bd13f in KWin::ARBBlurShader::init (this=0x1f24e50) at ../../../kwin/effects/blur/blurshader.cpp:471
#9  0x00007fb75c4b9259 in KWin::BlurEffect::reconfigure (this=0x1f6f2e0, flags=...) at ../../../kwin/effects/blur/blur.cpp:91
#10 0x00007fb75c4b9537 in KWin::BlurEffect::BlurEffect (this=0x1f6f2e0) at ../../../kwin/effects/blur/blur.cpp:53
#11 0x00007fb75c4b9656 in KWin::effect_create_kwin4_effect_blur () at ../../../kwin/effects/blur/blur.cpp:34
#12 0x00007fb778764fc5 in KWin::EffectsHandlerImpl::loadEffect (this=0x1f20cb0, name=..., checkDefault=false) at ../../kwin/effects.cpp:1274
#13 0x00007fb778765f2a in KWin::EffectsHandlerImpl::slotEffectsQueried (this=0x1f20cb0) at ../../kwin/effects.cpp:217
#14 0x00007fb774002761 in QMetaObject::activate (sender=0x1eb8510, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#15 0x00007fb773edf3a7 in QFutureWatcherBase::event (this=<optimized out>, event=0x7fb7580176c0) at concurrent/qfuturewatcher.cpp:344
#16 0x00007fb77336f7b4 in notify_helper (e=0x7fb7580176c0, receiver=0x1eb8510, this=0x1dac150) at kernel/qapplication.cpp:4556
#17 QApplicationPrivate::notify_helper (this=0x1dac150, receiver=0x1eb8510, e=0x7fb7580176c0) at kernel/qapplication.cpp:4528
#18 0x00007fb773374583 in QApplication::notify (this=0x7fffbdc74180, receiver=0x1eb8510, e=0x7fb7580176c0) at kernel/qapplication.cpp:4417
#19 0x00007fb777e9a4a6 in KApplication::notify (this=0x7fffbdc74180, receiver=0x1eb8510, event=0x7fb7580176c0) at ../../kdeui/kernel/kapplication.cpp:311
#20 0x00007fb773fee30c in QCoreApplication::notifyInternal (this=0x7fffbdc74180, receiver=0x1eb8510, event=0x7fb7580176c0) at kernel/qcoreapplication.cpp:915
#21 0x00007fb773ff20ea in sendEvent (event=0x7fb7580176c0, receiver=0x1eb8510) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#22 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1d5d1f0) at kernel/qcoreapplication.cpp:1539
#23 0x00007fb77341897a in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#24 QEventDispatcherX11::processEvents (this=0x1d5ead0, flags=...) at kernel/qeventdispatcher_x11.cpp:75
#25 0x00007fb773fece42 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#26 0x00007fb773fed097 in QEventLoop::exec (this=0x7fffbdc74100, flags=...) at kernel/qeventloop.cpp:204
#27 0x00007fb773ff23e7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#28 0x00007fb7786ef4f3 in kdemain (argc=<optimized out>, argv=<optimized out>) at ../../kwin/main.cpp:545
#29 0x00007fb7782ef76d in __libc_start_main (main=0x400630 <main(int, char**)>, argc=3, ubp_av=0x7fffbdc74878, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffbdc74868) at libc-start.c:226
#30 0x0000000000400661 in _start ()

Possible duplicates by query: bug 303995, bug 290390, bug 286479, bug 284375.

Reported using DrKonqi