Application: kwin (4.6.2 (4.6.2))
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-11-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
opened configure desktop effects and ticked checkbox to enable desktop effects.  Kwin crashed immediately.

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[KCrash Handler]
#6  _mesa_generate_mipmap (ctx=0x11931b0, target=3553, texObj=0x231cf70) at main/mipmap.c:1693
#7  0x00007ff77bd84613 in intelGenerateMipmap (ctx=0x11931b0, target=3553, texObj=0x231cf70) at intel_tex.c:82
#8  0x00007ff77b98a59f in _mesa_GenerateMipmapEXT (target=3553) at main/fbobject.c:2184
#9  0x00007ff7961df594 in KWin::GLTexture::enableFilter (this=0x2330aa0) at ../../../kwin/lib/kwinglutils.cpp:589
#10 0x00007ff7961df469 in KWin::GLTexture::setWrapMode (this=0x2330aa0, mode=10496) at ../../../kwin/lib/kwinglutils.cpp:565
#11 0x00007ff7961e946d in KWin::ShaderEffect::loadData (this=0x22ff380, shadername=...) at ../../../kwin/lib/kwinshadereffect.cpp:73
#12 0x00007ff7961e9c12 in KWin::ShaderEffect::ShaderEffect (this=0x22ff380, shadername=...) at ../../../kwin/lib/kwinshadereffect.cpp:43
#13 0x00007ff77ab90a34 in KWin::SharpenEffect::SharpenEffect (this=0x22ff370) at ../../../kwin/effects/sharpen/sharpen.cpp:36
#14 0x00007ff77ab90b96 in KWin::effect_create_kwin4_effect_sharpen () at ../../../kwin/effects/sharpen/sharpen.cpp:32
#15 0x00007ff7981171eb in KWin::EffectsHandlerImpl::loadEffect (this=0x14b5c10, name=...) at ../../kwin/effects.cpp:1128
#16 0x00007ff7981183d1 in KWin::EffectsHandlerImpl::reconfigure (this=0x14b5c10) at ../../kwin/effects.cpp:143
#17 0x00007ff7980f304c in KWin::Workspace::setupCompositing (this=0x14bc4e0) at ../../kwin/composite.cpp:216
#18 0x00007ff798078deb in KWin::Workspace::Workspace (this=0x14bc4e0, restore=false) at ../../kwin/workspace.cpp:222
#19 0x00007ff79809038c in KWin::Application::Application (this=<value optimized out>) at ../../kwin/main.cpp:330
#20 0x00007ff798091e7d in kdemain (argc=<value optimized out>, argv=0x7fff36773108) at ../../kwin/main.cpp:516
#21 0x00007ff797cc3eff in __libc_start_main (main=0x400740 <main(int, char**)>, argc=3, ubp_av=0x7fff36773108, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff367730f8) at libc-start.c:226
#22 0x0000000000400669 in _start ()

Possible duplicates by query: bug 274825.

Reported using DrKonqi