Application: systemsettings (1.0)
KDE Platform Version: 4.8.80 (4.8.80)
Qt Version: 4.8.2
Operating System: Linux 3.4.0-5-generic x86_64
Distribution: Ubuntu quantal (development branch)

-- Information about the crash:
- What I was doing when the application crashed: clicked on workspace  appearance in system settings when it crashed. Crashes consistently.

- Custom settings of the application: was trying out qtcurve in application appearances , but it doesn't seem to matter what decor is used , workspce appearance just crashes anyway.

The crash can be reproduced some of the time.

-- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f49dc38c7c0 (LWP 1955))]

Thread 3 (Thread 0x7f49be42b700 (LWP 1958)):
#0  0x00007f49d93900bd in read () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f49ce3f60bc in ?? () from /usr/lib/nvidia-current/libGL.so.1
#2  0x00007f49cbc81b27 in ?? () from /usr/lib/nvidia-current/tls/libnvidia-tls.so.295.53
#3  0x00007f49d2b64e9f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f49d2b29689 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f49d2b29aa2 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f49d2b29c24 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f49d9b110b6 in QEventDispatcherGlib::processEvents (this=0x7f49b80008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#8  0x00007f49d9ae16cf in QEventLoop::processEvents (this=this@entry=0x7f49be42acf0, flags=...) at kernel/qeventloop.cpp:149
#9  0x00007f49d9ae1958 in QEventLoop::exec (this=0x7f49be42acf0, flags=...) at kernel/qeventloop.cpp:204
#10 0x00007f49d99e4a50 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#11 0x00007f49d9ac1fbf in QInotifyFileSystemWatcherEngine::run (this=0x1491c20) at io/qfilesystemwatcher_inotify.cpp:248
#12 0x00007f49d99e79eb in QThreadPrivate::start (arg=0x1491c20) at thread/qthread_unix.cpp:307
#13 0x00007f49ce3f7b74 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#14 0x00007f49d2ff6e9a in start_thread (arg=0x7f49be42b700) at pthread_create.c:308
#15 0x00007f49d939d4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#16 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f49bd7d6700 (LWP 1959)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f49d71d6cb7 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f49d71d6ce9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f49ce3f7b74 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#4  0x00007f49d2ff6e9a in start_thread (arg=0x7f49bd7d6700) at pthread_create.c:308
#5  0x00007f49d939d4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f49dc38c7c0 (LWP 1955)):
[KCrash Handler]
#6  0x00007f49b733d226 in KDecorationOptions::font(bool, bool) const () from /usr/lib/libkdecorations.so.4
#7  0x00007f49b756ee63 in ?? () from /usr/lib/kde4/kwin3_qtcurve.so
#8  0x00007f49b756ea09 in ?? () from /usr/lib/kde4/kwin3_qtcurve.so
#9  0x00007f49b757053d in create_factory () from /usr/lib/kde4/kwin3_qtcurve.so
#10 0x00007f49bd7e73d0 in KDecorationPlugins::loadPlugin (this=0x14faec0, nameStr=...) at ../../../kwin/libkdecorations/kdecoration_plugins_p.cpp:194
#11 0x00007f49bda15ca2 in KWin::DecorationModel::regeneratePreview (this=this@entry=0x14fada0, index=..., size=...) at ../../../../kwin/kcmkwin/kwindecoration/decorationmodel.cpp:290
#12 0x00007f49bda16092 in KWin::DecorationModel::regeneratePreviews (this=0x14fada0) at ../../../../kwin/kcmkwin/kwindecoration/decorationmodel.cpp:261
#13 0x00007f49bda0bb2b in KWin::KWinDecorationModule::KWinDecorationModule (this=0x14aa740, parent=<optimized out>) at ../../../../kwin/kcmkwin/kwindecoration/kwindecoration.cpp:121
#14 0x00007f49bda0c8b4 in KPluginFactory::createInstance<KWin::KWinDecorationModule, QWidget> (parentWidget=<optimized out>, parent=<optimized out>, args=...) at /usr/include/KDE/../kpluginfactory.h:477
#15 0x00007f49da2b6cb5 in KPluginFactory::create (this=0x14a7450, iface=0x7f49db5b39c0 "KCModule", parentWidget=0x0, parent=0x149ecb0, args=..., keyword=...) at ../../kdecore/util/kpluginfactory.cpp:203
#16 0x00007f49dba949a9 in create<KCModule> (args=..., keyword=..., parent=0x149ecb0, parentWidget=0x0, this=<optimized out>) at ../../kdecore/util/kpluginfactory.h:531
#17 createInstance<KCModule> (error=0x7fff337975a0, args=..., parent=0x149ecb0, parentWidget=0x0, this=0x137e480) at ../../kdecore/services/kservice.h:559
#18 createInstance<KCModule> (error=0x7fff337975a0, args=..., parent=0x149ecb0, this=0x137e480) at ../../kdecore/services/kservice.h:536
#19 KCModuleLoader::loadModule (mod=..., report=KCModuleLoader::Inline, parent=0x149ecb0, args=...) at ../../kutils/kcmoduleloader.cpp:89
#20 0x00007f49dba99870 in KCModuleProxyPrivate::loadModule (this=this@entry=0x1493bc0) at ../../kutils/kcmoduleproxy.cpp:106
#21 0x00007f49dba99fc5 in KCModuleProxy::realModule (this=this@entry=0x149ecb0) at ../../kutils/kcmoduleproxy.cpp:83
#22 0x00007f49dba9a002 in KCModuleProxy::showEvent (this=0x149ecb0, ev=0x7fff33798060) at ../../kutils/kcmoduleproxy.cpp:197
#23 0x00007f49da78ca0e in QWidget::event (this=0x149ecb0, event=0x7fff33798060) at kernel/qwidget.cpp:8578
#24 0x00007f49da73cd9c in QApplicationPrivate::notify_helper (this=this@entry=0x1118d20, receiver=receiver@entry=0x149ecb0, e=e@entry=0x7fff33798060) at kernel/qapplication.cpp:4556
#25 0x00007f49da74120a in QApplication::notify (this=0x7fff3379a890, receiver=0x149ecb0, e=0x7fff33798060) at kernel/qapplication.cpp:4417
#26 0x00007f49db445f66 in KApplication::notify (this=0x7fff3379a890, receiver=0x149ecb0, event=0x7fff33798060) at ../../kdeui/kernel/kapplication.cpp:311
#27 0x00007f49d9ae297e in QCoreApplication::notifyInternal (this=0x7fff3379a890, receiver=0x149ecb0, event=0x7fff33798060) at kernel/qcoreapplication.cpp:915
#28 0x00007f49da78ea17 in sendEvent (event=0x7fff33798060, receiver=0x149ecb0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#29 QWidgetPrivate::show_helper (this=0x1493c20) at kernel/qwidget.cpp:7551
#30 0x00007f49da78e88a in QWidgetPrivate::showChildren (this=this@entry=0x14935f0, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7859
#31 0x00007f49da78e91d in QWidgetPrivate::show_helper (this=this@entry=0x14935f0) at kernel/qwidget.cpp:7498
#32 0x00007f49da78ed02 in QWidget::setVisible (this=0x1498f30, visible=<optimized out>) at kernel/qwidget.cpp:7773
#33 0x00007f49da78e89e in show (this=0x1498f30) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:494
#34 QWidgetPrivate::showChildren (this=this@entry=0x1498c50, spontaneous=spontaneous@entry=false) at kernel/qwidget.cpp:7861
#35 0x00007f49da78e91d in QWidgetPrivate::show_helper (this=this@entry=0x1498c50) at kernel/qwidget.cpp:7498
#36 0x00007f49da78ed02 in QWidget::setVisible (this=0x14a2080, visible=<optimized out>) at kernel/qwidget.cpp:7773
#37 0x00007f49da77072a in show (this=0x14a2080) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:494
#38 QStackedLayout::setCurrentIndex (this=0x137ace0, index=1) at kernel/qstackedlayout.cpp:311
#39 0x00007f49db473e1f in KPageViewPrivate::_k_pageSelected (this=0x13d1240, index=..., previous=...) at ../../kdeui/paged/kpageview.cpp:235
#40 0x00007f49d9af836f in QMetaObject::activate (sender=0x1333d50, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff33798520) at kernel/qobject.cpp:3547
#41 0x00007f49dac9ba17 in QItemSelectionModel::selectionChanged (this=this@entry=0x1333d50, _t1=..., _t2=...) at .moc/release-shared/moc_qitemselectionmodel.cpp:166
#42 0x00007f49daca06b3 in QItemSelectionModel::emitSelectionChanged (this=this@entry=0x1333d50, newSelection=..., oldSelection=...) at itemviews/qitemselectionmodel.cpp:1544
#43 0x00007f49daca187c in QItemSelectionModel::select (this=0x1333d50, selection=..., command=...) at itemviews/qitemselectionmodel.cpp:1110
#44 0x00007f49dac9d52b in QItemSelectionModel::select (this=this@entry=0x1333d50, index=..., command=...) at itemviews/qitemselectionmodel.cpp:985
#45 0x00007f49dac9bc61 in QItemSelectionModel::setCurrentIndex (this=0x1333d50, index=..., command=...) at itemviews/qitemselectionmodel.cpp:1174
#46 0x00007f49db472c7f in KPageViewPrivate::_k_rebuildGui (this=0x13d1240) at ../../kdeui/paged/kpageview.cpp:70
#47 0x00007f49db473b85 in KPageViewPrivate::_k_modelChanged (this=0x13d1240) at ../../kdeui/paged/kpageview.cpp:190
#48 0x00007f49d9af836f in QMetaObject::activate (sender=0x1365600, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#49 0x00007f49db478341 in KPageWidgetModel::addPage (this=0x1365600, item=0x13c2400) at ../../kdeui/paged/kpagewidgetmodel.cpp:401
#50 0x00007f49db872990 in ModuleView::addModule (this=this@entry=0x1363d50, module=0x13c2458) at ../../../systemsettings/core/ModuleView.cpp:191
#51 0x00007f49db872fb2 in ModuleView::loadModule (this=0x1363d50, menuItem=...) at ../../../systemsettings/core/ModuleView.cpp:144
#52 0x00007f49bf0ab6c8 in IconMode::changeModule (this=0x136ad50, activeModule=...) at ../../../systemsettings/icons/IconMode.cpp:134
#53 0x00007f49d9af836f in QMetaObject::activate (sender=0x10cdb30, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff33798d50) at kernel/qobject.cpp:3547
#54 0x00007f49dac469c5 in QAbstractItemView::activated (this=this@entry=0x10cdb30, _t1=...) at .moc/release-shared/moc_qabstractitemview.cpp:362
#55 0x00007f49dac4856c in QAbstractItemView::mouseReleaseEvent (this=0x10cdb30, event=0x7fff33799c20) at itemviews/qabstractitemview.cpp:1821
#56 0x00007f49dac6628e in QListView::mouseReleaseEvent (this=<optimized out>, e=<optimized out>) at itemviews/qlistview.cpp:799
#57 0x00007f49db41d0cb in KCategorizedView::mouseReleaseEvent (this=0x10cdb30, event=0x7fff33799c20) at ../../kdeui/itemviews/kcategorizedview.cpp:1059
#58 0x00007f49da78c690 in QWidget::event (this=0x10cdb30, event=0x7fff33799c20) at kernel/qwidget.cpp:8371
#59 0x00007f49dab3b636 in QFrame::event (this=0x10cdb30, e=0x7fff33799c20) at widgets/qframe.cpp:557
#60 0x00007f49dac48fc3 in QAbstractItemView::viewportEvent (this=0x10cdb30, event=0x7fff33799c20) at itemviews/qabstractitemview.cpp:1644
#61 0x00007f49d9ae2ae6 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>, receiver=0x13a0f90, event=0x7fff33799c20) at kernel/qcoreapplication.cpp:1025
#62 0x00007f49da73cd6c in QApplicationPrivate::notify_helper (this=this@entry=0x1118d20, receiver=receiver@entry=0x13a0f90, e=e@entry=0x7fff33799c20) at kernel/qapplication.cpp:4552
#63 0x00007f49da741a6b in QApplication::notify (this=<optimized out>, receiver=0x13a0f90, e=0x7fff33799c20) at kernel/qapplication.cpp:4099
#64 0x00007f49db445f66 in KApplication::notify (this=0x7fff3379a890, receiver=0x13a0f90, event=0x7fff33799c20) at ../../kdeui/kernel/kapplication.cpp:311
#65 0x00007f49d9ae297e in QCoreApplication::notifyInternal (this=0x7fff3379a890, receiver=0x13a0f90, event=0x7fff33799c20) at kernel/qcoreapplication.cpp:915
#66 0x00007f49da73dbd3 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#67 QApplicationPrivate::sendMouseEvent (receiver=0x13a0f90, event=0x7fff33799c20, alienWidget=0x13a0f90, nativeWidget=0x124ace0, buttonDown=0x7f49db21a2e8, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3167
#68 0x00007f49da7bb384 in QETWidget::translateMouseEvent (this=this@entry=0x124ace0, event=event@entry=0x7fff3379a3a0) at kernel/qapplication_x11.cpp:4617
#69 0x00007f49da7ba27f in QApplication::x11ProcessEvent (this=0x7fff3379a890, event=0x7fff3379a3a0) at kernel/qapplication_x11.cpp:3732
#70 0x00007f49da7e1de2 in x11EventSourceDispatch (s=0x110e520, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#71 0x00007f49d2b29835 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#72 0x00007f49d2b29b68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#73 0x00007f49d2b29c24 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#74 0x00007f49d9b11096 in QEventDispatcherGlib::processEvents (this=0x104cad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#75 0x00007f49da7e1a5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#76 0x00007f49d9ae16cf in QEventLoop::processEvents (this=this@entry=0x7fff3379a770, flags=...) at kernel/qeventloop.cpp:149
#77 0x00007f49d9ae1958 in QEventLoop::exec (this=0x7fff3379a770, flags=...) at kernel/qeventloop.cpp:204
#78 0x00007f49d9ae6b18 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#79 0x000000000040a98e in main (argc=5, argv=0x7fff3379a9d8) at ../../../systemsettings/app/main.cpp:49

Reported using DrKonqi