Application: systemsettings (4.11.21)
KDE Platform Version: 4.14.10 (Compiled from sources)
Qt Version: 4.8.7
Operating System: FreeBSD 10.3-RELEASE amd64
Distribution (Platform): FreeBSD Ports

-- Information about the crash:
- What I was doing when the application crashed: Opened System Settings then selected Mutimedia. When I select "Audio and Video Settings," System Settings crashes about 10 seconds later without going into that settings panel.

I have recently attempted to switch from GStreamer to VLC for audio handling, and this is likely related to that.

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault
[KCrash Handler]
#8  0x000000082b468b63 in QMetaObject::className () from /usr/local/lib/qt5/libQt5Core.so.5
#9  0x000000082a598615 in QToolTip::setFont () from /usr/local/lib/qt5/libQt5Widgets.so.5
#10 0x000000082a5ce50c in QDesktopWidget::qt_metacall () from /usr/local/lib/qt5/libQt5Widgets.so.5
#11 0x000000082a8eef72 in QPixmapStyle::qt_metacall () from /usr/local/lib/qt5/libQt5Widgets.so.5
#12 0x000000082a55d17e in _init () from /usr/local/lib/qt5/libQt5Widgets.so.5
#13 0x00007fffffff9fa0 in ?? ()
#14 0x000000080061ea9f in r_debug_state () from /libexec/ld-elf.so.1
#15 0x0000000800623437 in _rtld_is_dlopened () from /libexec/ld-elf.so.1
#16 0x000000080061fea0 in dlopen () from /libexec/ld-elf.so.1
#17 0x00000008296d01c1 in vlc_timer_getoverrun () from /usr/local/lib/libvlccore.so.8
#18 0x00000008296ba66c in module_list_free () from /usr/local/lib/libvlccore.so.8
#19 0x00000008296baaad in module_list_free () from /usr/local/lib/libvlccore.so.8
#20 0x00000008296ba9de in module_list_free () from /usr/local/lib/libvlccore.so.8
#21 0x00000008296ba7e6 in module_list_free () from /usr/local/lib/libvlccore.so.8
#22 0x00000008296ba27f in module_config_free () from /usr/local/lib/libvlccore.so.8
#23 0x00000008296622bf in libvlc_InternalInit () from /usr/local/lib/libvlccore.so.8
#24 0x0000000829924039 in libvlc_new () from /usr/local/lib/libvlc.so.5
#25 0x000000082942fd7f in qt_plugin_instance () from /usr/local/lib/kde4/plugins/phonon_backend/phonon_vlc.so
#26 0x0000000829414de6 in qt_plugin_instance () from /usr/local/lib/kde4/plugins/phonon_backend/phonon_vlc.so
#27 0x0000000829414a14 in qt_plugin_instance () from /usr/local/lib/kde4/plugins/phonon_backend/phonon_vlc.so
#28 0x000000080436f4c1 in QPluginLoader::instance () from /usr/local/lib/qt4/libQtCore.so.4
#29 0x0000000809fd5791 in Phonon::Factory::setBackend () from /usr/local/lib/libphonon.so.4
#30 0x0000000809fd588a in Phonon::Factory::setBackend () from /usr/local/lib/libphonon.so.4
#31 0x0000000809fd5c60 in Phonon::Factory::setBackend () from /usr/local/lib/libphonon.so.4
#32 0x0000000809fd69de in Phonon::Factory::backend () from /usr/local/lib/libphonon.so.4
#33 0x0000000809fd9206 in Phonon::GlobalConfig::audioOutputDeviceListFor () from /usr/local/lib/libphonon.so.4
#34 0x0000000824815fbe in qt_plugin_instance () from /usr/local/lib/kde4/kcm_phonon.so
#35 0x0000000824815f16 in qt_plugin_instance () from /usr/local/lib/kde4/kcm_phonon.so
#36 0x00000008248119f2 in qt_plugin_instance () from /usr/local/lib/kde4/kcm_phonon.so
#37 0x0000000824811635 in qt_plugin_instance () from /usr/local/lib/kde4/kcm_phonon.so
#38 0x0000000824811d20 in qt_plugin_instance () from /usr/local/lib/kde4/kcm_phonon.so
#39 0x0000000803a7085e in KPluginFactory::create () from /usr/local/lib/libkdecore.so.5
#40 0x0000000801d4859c in KCModuleLoader::showLastLoaderError () from /usr/local/lib/libkcmutils.so.4
#41 0x0000000801d471fe in KCModuleLoader::loadModule () from /usr/local/lib/libkcmutils.so.4
#42 0x0000000801d4dd42 in KCModuleProxy::realModule () from /usr/local/lib/libkcmutils.so.4
#43 0x0000000801d4db12 in KCModuleProxy::realModule () from /usr/local/lib/libkcmutils.so.4
#44 0x0000000801d4ea69 in KCModuleProxy::showEvent () from /usr/local/lib/libkcmutils.so.4
#45 0x0000000802c601ef in QWidget::event () from /usr/local/lib/qt4/libQtGui.so.4
#46 0x0000000802c1183d in QApplicationPrivate::notify_helper () from /usr/local/lib/qt4/libQtGui.so.4
#47 0x0000000802c148c9 in QApplication::notify () from /usr/local/lib/qt4/libQtGui.so.4
#48 0x0000000802274a37 in KApplication::notify () from /usr/local/lib/libkdeui.so.5
#49 0x000000080438c596 in QCoreApplication::notifyInternal () from /usr/local/lib/qt4/libQtCore.so.4
#50 0x0000000802c5ecfa in QWidgetPrivate::show_helper () from /usr/local/lib/qt4/libQtGui.so.4
#51 0x0000000802c5ef3b in QWidgetPrivate::showChildren () from /usr/local/lib/qt4/libQtGui.so.4
#52 0x0000000802c5eb69 in QWidgetPrivate::show_helper () from /usr/local/lib/qt4/libQtGui.so.4
#53 0x0000000802c5f814 in QWidget::setVisible () from /usr/local/lib/qt4/libQtGui.so.4
#54 0x0000000802c5ef34 in QWidgetPrivate::showChildren () from /usr/local/lib/qt4/libQtGui.so.4
#55 0x0000000802c5eb69 in QWidgetPrivate::show_helper () from /usr/local/lib/qt4/libQtGui.so.4
#56 0x0000000802c5f814 in QWidget::setVisible () from /usr/local/lib/qt4/libQtGui.so.4
#57 0x0000000802c45b0d in QStackedLayout::setCurrentIndex () from /usr/local/lib/qt4/libQtGui.so.4
#58 0x00000008022ab279 in KPageModel::qt_metacall () from /usr/local/lib/libkdeui.so.5
#59 0x00000008022ac007 in KPageView::viewPosition () from /usr/local/lib/libkdeui.so.5
#60 0x00000008043a3dfd in QMetaObject::activate () from /usr/local/lib/qt4/libQtCore.so.4
#61 0x0000000803171557 in QItemSelectionModel::emitSelectionChanged () from /usr/local/lib/qt4/libQtGui.so.4
#62 0x0000000803170d2e in QItemSelectionModel::select () from /usr/local/lib/qt4/libQtGui.so.4
#63 0x00000008022ae918 in KPageView::qt_metacall () from /usr/local/lib/libkdeui.so.5
#64 0x000000080313cd8d in QListView::setSelection () from /usr/local/lib/qt4/libQtGui.so.4
#65 0x000000080311a708 in QAbstractItemView::mousePressEvent () from /usr/local/lib/qt4/libQtGui.so.4
#66 0x0000000802c5ffb9 in QWidget::event () from /usr/local/lib/qt4/libQtGui.so.4
#67 0x0000000803004b3b in QFrame::event () from /usr/local/lib/qt4/libQtGui.so.4
#68 0x00000008030849ec in QAbstractScrollArea::viewportEvent () from /usr/local/lib/qt4/libQtGui.so.4
#69 0x0000000803119f06 in QAbstractItemView::viewportEvent () from /usr/local/lib/qt4/libQtGui.so.4
#70 0x0000000803085295 in QAbstractScrollArea::qt_metacall () from /usr/local/lib/qt4/libQtGui.so.4
#71 0x000000080438c89d in QCoreApplicationPrivate::sendThroughObjectEventFilters () from /usr/local/lib/qt4/libQtCore.so.4
#72 0x0000000802c1182d in QApplicationPrivate::notify_helper () from /usr/local/lib/qt4/libQtGui.so.4
#73 0x0000000802c13126 in QApplication::notify () from /usr/local/lib/qt4/libQtGui.so.4
#74 0x0000000802274a37 in KApplication::notify () from /usr/local/lib/libkdeui.so.5
#75 0x000000080438c596 in QCoreApplication::notifyInternal () from /usr/local/lib/qt4/libQtCore.so.4
#76 0x0000000802c12296 in QApplicationPrivate::sendMouseEvent () from /usr/local/lib/qt4/libQtGui.so.4
#77 0x0000000802c89cb9 in qt_try_modal () from /usr/local/lib/qt4/libQtGui.so.4
#78 0x0000000802c882c8 in QApplication::x11ProcessEvent () from /usr/local/lib/qt4/libQtGui.so.4
#79 0x0000000802cb2fd1 in QX11Info::isCompositingManagerRunning () from /usr/local/lib/qt4/libQtGui.so.4
#80 0x000000080d217de4 in g_main_dispatch (context=0x816450140) at gmain.c:3154
#81 0x000000080d217c03 in g_main_context_dispatch (context=0x816450140) at gmain.c:3769
#82 0x000000080d2181d7 in g_main_context_iterate (context=0x816450140, block=1, dispatch=1, self=0x816420800) at gmain.c:3840
#83 0x000000080d218256 in g_main_context_iteration (context=0x816450140, may_block=1) at gmain.c:3901
#84 0x00000008043b9171 in QEventDispatcherGlib::processEvents () from /usr/local/lib/qt4/libQtCore.so.4
#85 0x0000000802cb2cad in QX11Info::isCompositingManagerRunning () from /usr/local/lib/qt4/libQtGui.so.4
#86 0x0000000804389bbf in QEventLoop::exec () from /usr/local/lib/qt4/libQtCore.so.4
#87 0x000000080438cb4d in QCoreApplication::exec () from /usr/local/lib/qt4/libQtCore.so.4
#88 0x00000000004140d0 in ?? ()
#89 0x000000000040b49f in ?? ()
#90 0x000000080063b000 in ?? ()
#91 0x0000000000000000 in ?? ()

Reported using DrKonqi