Application: kwin (4.8.5 (4.8.5))
KDE Platform Version: 4.8.5 (4.8.5)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-23-generic x86_64
Distribution: Linux Mint 13 Maya

-- Information about the crash:
- What I was doing when the application crashed:

I had started up Steam and it mentioned that I was not in direct rendering mode.

It happens randomly with other applications also.

The crash can be reproduced some of the time.

-- 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_ssse3_back () at ../sysdeps/x86_64/multiarch/memcpy-ssse3-back.S:1516
#7  0x00007f6a539d5836 in __indirect_glProgramParameters4fvNV (target=1, index=19747748, num=1470072696, params=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/string3.h:52
#8  0x00007f6a37da720f in KWin::ARBBlurShader::init (this=0x12d5390) at ../../../kwin/effects/blur/blurshader.cpp:471
#9  0x00007f6a37da2799 in KWin::BlurEffect::reconfigure (this=0x12d5280, flags=...) at ../../../kwin/effects/blur/blur.cpp:85
#10 0x00007f6a37da2a77 in KWin::BlurEffect::BlurEffect (this=0x12d5280) at ../../../kwin/effects/blur/blur.cpp:53
#11 0x00007f6a37da2b76 in KWin::effect_create_kwin4_effect_blur () at ../../../kwin/effects/blur/blur.cpp:34
#12 0x00007f6a57ad35a4 in KWin::EffectsHandlerImpl::loadEffect (this=0x126d1a0, name=..., checkDefault=false) at ../../kwin/effects.cpp:1199
#13 0x00007f6a57ad490a in KWin::EffectsHandlerImpl::reconfigure (this=0x126d1a0) at ../../kwin/effects.cpp:196
#14 0x00007f6a57ad4e28 in KWin::EffectsHandlerImpl::EffectsHandlerImpl (this=0x126d1a0, type=<optimized out>) at ../../kwin/effects.cpp:128
#15 0x00007f6a57aa914f in KWin::Workspace::setupCompositing (this=0x11572a0) at ../../kwin/composite.cpp:174
#16 0x00007f6a57aa9aa5 in KWin::Workspace::setupCompositing (this=<optimized out>) at ../../kwin/composite.cpp:87
#17 0x00007f6a57a45920 in KWin::Workspace::Workspace (this=0x11572a0, restore=false) at ../../kwin/workspace.cpp:227
#18 0x00007f6a57a5db8c in KWin::Application::Application (this=<optimized out>) at ../../kwin/main.cpp:322
#19 0x00007f6a57a5f88c in kdemain (argc=<optimized out>, argv=<optimized out>) at ../../kwin/main.cpp:511
#20 0x00007f6a5766176d in __libc_start_main (main=0x400630 <main(int, char**)>, argc=3, ubp_av=0x7fff3db7ea18, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff3db7ea08) at libc-start.c:226
#21 0x0000000000400661 in _start ()

Possible duplicates by query: bug 319520, bug 311930, bug 309625, bug 302495.

Reported using DrKonqi