Application: kcmshell4 ()
KDE Platform Version: 4.8.3 (4.8.3)
Qt Version: 4.8.1
Operating System: Linux 3.3.7-1.fc17.x86_64 x86_64
Distribution: "Fedora release 17 (Beefy Miracle)"

-- Information about the crash:
- What I was doing when the application crashed:
Opened Desktop Effects to turn on OpenGL because desktop effects was disables. I used open source ATI drivers.

The crash can be reproduced every time.

-- Backtrace:
Application: KDE Control Module (kcmshell4), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
82	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7f9c772bd880 (LWP 2048))]

Thread 2 (Thread 0x7f9c589f9700 (LWP 2051)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:166
#1  0x00007f9c5a2f88d3 in pipe_semaphore_wait (sema=0x26fdee8) at ../../../../../src/gallium/auxiliary/os/os_thread.h:432
#2  radeon_drm_cs_emit_ioctl (param=0x26dc370) at radeon_drm_cs.c:401
#3  0x00007f9c7580bd14 in start_thread (arg=0x7f9c589f9700) at pthread_create.c:309
#4  0x00007f9c73e3499d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7f9c772bd880 (LWP 2048)):
[KCrash Handler]
#6  0x00007f9c66ef4360 in ?? ()
#7  0x00007f9c5d439675 in KWin::GLPlatform::detect (this=0x27a2d20) at /usr/src/debug/kde-workspace-4.8.3/kwin/libkwineffects/kwinglplatform.cpp:501
#8  0x00007f9c5d4354b6 in KWin::CompositingPrefs::detectDriverAndVersion (this=<optimized out>) at /usr/src/debug/kde-workspace-4.8.3/kwin/compositingprefs.cpp:381
#9  0x00007f9c5d435739 in KWin::CompositingPrefs::detect (this=0x21fe8d8) at /usr/src/debug/kde-workspace-4.8.3/kwin/compositingprefs.cpp:169
#10 0x00007f9c5d42d407 in KWin::KWinCompositingConfig::load (this=0x21fe670) at /usr/src/debug/kde-workspace-4.8.3/kwin/kcmkwin/kwincompositing/main.cpp:387
#11 0x00007f9c5d42a6e7 in KWin::KWinCompositingConfig::rearmGlSupport (this=0x21fe670) at /usr/src/debug/kde-workspace-4.8.3/kwin/kcmkwin/kwincompositing/main.cpp:303
#12 0x00007f9c75bac07f in QMetaObject::activate (sender=0x2196c90, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff59514d50) at kernel/qobject.cpp:3547
#13 0x00007f9c75391932 in QAbstractButton::clicked (this=<optimized out>, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:219
#14 0x00007f9c750e5dfe in QAbstractButtonPrivate::emitClicked (this=this@entry=0x2178850) at widgets/qabstractbutton.cpp:548
#15 0x00007f9c750e6400 in QAbstractButtonPrivate::click (this=this@entry=0x2178850) at widgets/qabstractbutton.cpp:541
#16 0x00007f9c750e666c in QAbstractButton::mouseReleaseEvent (this=0x2196c90, e=0x7fff595155f0) at widgets/qabstractbutton.cpp:1123
#17 0x00007f9c74d7cd00 in QWidget::event (this=0x2196c90, event=0x7fff595155f0) at kernel/qwidget.cpp:8362
#18 0x00007f9c74d2d47c in QApplicationPrivate::notify_helper (this=this@entry=0x1f77e90, receiver=receiver@entry=0x2196c90, e=e@entry=0x7fff595155f0) at kernel/qapplication.cpp:4554
#19 0x00007f9c74d3220b in QApplication::notify (this=<optimized out>, receiver=0x2196c90, e=0x7fff595155f0) at kernel/qapplication.cpp:4097
#20 0x00007f9c76875a56 in KApplication::notify (this=0x7fff595163e0, receiver=0x2196c90, event=0x7fff595155f0) at /usr/src/debug/kdelibs-4.8.3/kdeui/kernel/kapplication.cpp:311
#21 0x00007f9c75b9593e in QCoreApplication::notifyInternal (this=0x7fff595163e0, receiver=0x2196c90, event=0x7fff595155f0) at kernel/qcoreapplication.cpp:876
#22 0x00007f9c74d2e2bb in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:231
#23 QApplicationPrivate::sendMouseEvent (receiver=0x2196c90, event=0x7fff595155f0, alienWidget=0x2196c90, nativeWidget=0x212c840, buttonDown=0x7f9c75800d88, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3165
#24 0x00007f9c74da8994 in QETWidget::translateMouseEvent (this=this@entry=0x212c840, event=event@entry=0x7fff59515d60) at kernel/qapplication_x11.cpp:4523
#25 0x00007f9c74da7721 in QApplication::x11ProcessEvent (this=0x7fff595163e0, event=0x7fff59515d60) at kernel/qapplication_x11.cpp:3646
#26 0x00007f9c74dcd70c in x11EventSourceDispatch (s=s@entry=0x1f76880, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#27 0x00007f9c7025b5cc in g_main_dispatch (context=0x1f7b240) at gmain.c:2515
#28 g_main_context_dispatch (context=context@entry=0x1f7b240) at gmain.c:3052
#29 0x00007f9c7025b9e8 in g_main_context_iterate (context=context@entry=0x1f7b240, block=block@entry=1, dispatch=dispatch@entry=1, self=<error reading variable: Unhandled dwarf expression opcode 0xfa>) at gmain.c:3123
#30 0x00007f9c7025baa4 in g_main_context_iteration (context=0x1f7b240, may_block=1) at gmain.c:3184
#31 0x00007f9c75bc39c6 in QEventDispatcherGlib::processEvents (this=0x1f54770, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#32 0x00007f9c74dcd3ee in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#33 0x00007f9c75b9493f in QEventLoop::processEvents (this=this@entry=0x7fff59516140, flags=...) at kernel/qeventloop.cpp:149
#34 0x00007f9c75b94bc8 in QEventLoop::exec (this=0x7fff59516140, flags=...) at kernel/qeventloop.cpp:204
#35 0x00007f9c751e0058 in QDialog::exec (this=0x212c840) at dialogs/qdialog.cpp:554
#36 0x00007f9c76edfb2c in kdemain (_argc=32943840, _argv=<optimized out>) at /usr/src/debug/kde-runtime-4.8.3/kcmshell/main.cpp:292
#37 0x00007f9c73d64735 in __libc_start_main (main=0x400720 <main(int, char**)>, argc=2, ubp_av=0x7fff59516518, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff59516508) at libc-start.c:226
#38 0x0000000000400751 in _start ()

Reported using DrKonqi