Application: plasma-desktop (4.11.20)
KDE Platform Version: 4.14.9
Qt Version: 4.8.6
Operating System: Linux 3.16.7-29-desktop x86_64
Distribution: "openSUSE 13.2 (Harlequin) (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
1) Installed VLC backend (phonon)
2) Started Amarok
3) Switched backends in phonon (GStreamer to VLC)
4) Tried to restart OpenSuse

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fcb8312f780 (LWP 1848))]

Thread 2 (Thread 0x7fcb550e6700 (LWP 1849)):
#0  0x00007fcb8073bc5d in poll () at /lib64/libc.so.6
#1  0x00007fcb55376878 in linux_udev_event_thread_main () at /usr/lib64/libusb-1.0.so.0
#2  0x00007fcb819df0a4 in start_thread () at /lib64/libpthread.so.0
#3  0x00007fcb8074408d in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fcb8312f780 (LWP 1848)):
[KCrash Handler]
#5  0x00007fcb806eeb8a in __strcmp_sse2_unaligned () at /lib64/libc.so.6
#6  0x00007fcb521bcfee in QMetaType::registerNormalizedType(QByteArray const&, void (*)(void*), void* (*)(void const*), void (*)(void*), void* (*)(void*, void const*), int, QFlags<QMetaType::TypeFlag>, QMetaObject const*) () at /usr/lib64/libQt5Core.so.5
#7  0x00007fcb52e60f57 in  () at /usr/lib64/libQt5Gui.so.5
#8  0x00007fcb82f6592a in call_init.part () at /lib64/ld-linux-x86-64.so.2
#9  0x00007fcb82f65a13 in _dl_init_internal () at /lib64/ld-linux-x86-64.so.2
#10 0x00007fcb82f69b48 in dl_open_worker () at /lib64/ld-linux-x86-64.so.2
#11 0x00007fcb82f657e4 in _dl_catch_error () at /lib64/ld-linux-x86-64.so.2
#12 0x00007fcb82f6933b in _dl_open () at /lib64/ld-linux-x86-64.so.2
#13 0x00007fcb7e34802b in dlopen_doit () at /lib64/libdl.so.2
#14 0x00007fcb82f657e4 in _dl_catch_error () at /lib64/ld-linux-x86-64.so.2
#15 0x00007fcb7e3485dd in _dlerror_run () at /lib64/libdl.so.2
#16 0x00007fcb7e3480c1 in dlopen@@GLIBC_2.2.5 () at /lib64/libdl.so.2
#17 0x00007fcb57b1359f in  () at /usr/lib64/libvlccore.so.7
#18 0x00007fcb57afcd5d in  () at /usr/lib64/libvlccore.so.7
#19 0x00007fcb57afd057 in  () at /usr/lib64/libvlccore.so.7
#20 0x00007fcb57afd2c9 in  () at /usr/lib64/libvlccore.so.7
#21 0x00007fcb57afd534 in  () at /usr/lib64/libvlccore.so.7
#22 0x00007fcb57afda87 in  () at /usr/lib64/libvlccore.so.7
#23 0x00007fcb57a9549d in libvlc_InternalInit () at /usr/lib64/libvlccore.so.7
#24 0x00007fcb5785f623 in libvlc_new () at /usr/lib64/libvlc.so.5
#25 0x00007fcb57d97ec9 in  () at /usr/lib64/kde4/plugins/phonon_backend/phonon_vlc.so
#26 0x00007fcb57d7d728 in  () at /usr/lib64/kde4/plugins/phonon_backend/phonon_vlc.so
#27 0x00007fcb57d7e1eb in qt_plugin_instance () at /usr/lib64/kde4/plugins/phonon_backend/phonon_vlc.so
#28 0x00007fcb81d5e641 in QPluginLoader::instance() () at /usr/lib64/libQtCore.so.4
#29 0x00007fcb5829ef8b in  () at /usr/lib64/kde4/plugins/phonon_platform/kde.so
#30 0x00007fcb5829f773 in  () at /usr/lib64/kde4/plugins/phonon_platform/kde.so
#31 0x00007fcb729aac76 in  () at /usr/lib64/libphonon.so.4
#32 0x00007fcb729ab317 in Phonon::Factory::backend(bool) () at /usr/lib64/libphonon.so.4
#33 0x00007fcb729ab973 in  () at /usr/lib64/libphonon.so.4
#34 0x00007fcb729d2716 in  () at /usr/lib64/libphonon.so.4
#35 0x00007fcb729d1d04 in Phonon::VideoWidget::VideoWidget(QWidget*) () at /usr/lib64/libphonon.so.4
#36 0x00007fcb769f213d in Plasma::VideoWidget::VideoWidget(QGraphicsWidget*) () at /usr/lib64/libplasma.so.3
#37 0x00007fcb5b7cf545 in  () at /usr/lib64/kde4/plasma_applet_mediaplayer.so
#38 0x00007fcb768f0a0c in  () at /usr/lib64/libplasma.so.3
#39 0x00007fcb768fd8dc in  () at /usr/lib64/libplasma.so.3
#40 0x00007fcb768fe2da in Plasma::Corona::loadLayout(QString const&) () at /usr/lib64/libplasma.so.3
#41 0x00007fcb768fe394 in Plasma::Corona::initializeLayout(QString const&) () at /usr/lib64/libplasma.so.3
#42 0x00007fcb6c4a28f5 in  () at /usr/lib64/libkdeinit4_plasma-desktop.so
#43 0x00007fcb6c4a2f05 in  () at /usr/lib64/libkdeinit4_plasma-desktop.so
#44 0x00007fcb6c4a7235 in  () at /usr/lib64/libkdeinit4_plasma-desktop.so
#45 0x00007fcb81d9259e in QObject::event(QEvent*) () at /usr/lib64/libQtCore.so.4
#46 0x00007fcb80ef1733 in QApplication::event(QEvent*) () at /usr/lib64/libQtGui.so.4
#47 0x00007fcb80eec76c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQtGui.so.4
#48 0x00007fcb80ef2cad in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQtGui.so.4
#49 0x00007fcb82b2be0a in KApplication::notify(QObject*, QEvent*) () at /usr/lib64/libkdeui.so.5
#50 0x00007fcb81d7a2ad in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /usr/lib64/libQtCore.so.4
#51 0x00007fcb81d7d57d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQtCore.so.4
#52 0x00007fcb81da78fe in  () at /usr/lib64/libQtCore.so.4
#53 0x00007fcb7d81aa04 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#54 0x00007fcb7d81ac48 in  () at /usr/lib64/libglib-2.0.so.0
#55 0x00007fcb7d81acec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#56 0x00007fcb81da70be in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#57 0x00007fcb80f89676 in  () at /usr/lib64/libQtGui.so.4
#58 0x00007fcb81d78e6f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#59 0x00007fcb81d79165 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQtCore.so.4
#60 0x00007fcb81d7e5b9 in QCoreApplication::exec() () at /usr/lib64/libQtCore.so.4
#61 0x00007fcb6c48db94 in kdemain () at /usr/lib64/libkdeinit4_plasma-desktop.so
#62 0x0000000000408815 in _start ()

Reported using DrKonqi