Application: kwin (4.7.00 (4.7.0))
KDE Platform Version: 4.7.00 (4.7.0)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-11-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
Kwin crash on bootup. Not sure if this is a bug or not but KDE simply does not work, themes using glass or see through appear black on Kubuntu backports and 11.10.

The crash can be reproduced some of the time.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007f6376219a5b in KWin::GLShader::load (this=0x12d5520, vertexSource=..., fragmentSource=...) at ../../../kwin/libkwineffects/kwinglutils.cpp:798
#8  0x00007f637621a158 in KWin::GLShader::loadFromFiles (this=0x12d5520, vertexFile=..., fragmentFile=...) at ../../../kwin/libkwineffects/kwinglutils.cpp:745
#9  0x00007f637621d227 in KWin::ShaderManager::initShaders (this=0x1488380) at ../../../kwin/libkwineffects/kwinglutils.cpp:1220
#10 0x00007f637621d8c9 in KWin::ShaderManager::ShaderManager (this=0x1488380) at ../../../kwin/libkwineffects/kwinglutils.cpp:1077
#11 0x00007f637621d907 in KWin::ShaderManager::instance () at ../../../kwin/libkwineffects/kwinglutils.cpp:1059
#12 0x00007f6378140adf in KWin::SceneOpenGL::SceneOpenGL (this=0x1486d30, ws=<value optimized out>) at ../../kwin/scene_opengl_glx.cpp:96
#13 0x00007f637812cb27 in KWin::Workspace::setupCompositing (this=0x162d4a0) at ../../kwin/composite.cpp:128
#14 0x00007f63780b29b4 in KWin::Workspace::Workspace (this=0x162d4a0, restore=true) at ../../kwin/workspace.cpp:225
#15 0x00007f63780cac1c in KWin::Application::Application (this=<value optimized out>) at ../../kwin/main.cpp:319
#16 0x00007f63780cc87f in kdemain (argc=<value optimized out>, argv=0x7fff348957f8) at ../../kwin/main.cpp:488
#17 0x00007f6377cfceff in __libc_start_main (main=0x400730 <main(int, char**)>, argc=3, ubp_av=0x7fff348957f8, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff348957e8) at libc-start.c:226
#18 0x0000000000400659 in _start ()

Possible duplicates by query: bug 280077, bug 279845, bug 278993, bug 278655, bug 273697.

Reported using DrKonqi