Application: dragon (19.12.1)
 (Compiled from sources)
Qt Version: 5.14.2
Frameworks Version: 5.70.0
Operating System: Linux 5.7.8-200.fc32.x86_64 x86_64
Windowing system: X11
Distribution: Fedora 32 (KDE Plasma)

-- Information about the crash:
- What I was doing when the application crashed:I try to open a .AVI file. I was using for the first time, a USB soud adapter.

-- Backtrace:
Application: Dragon Player (dragon), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fd9b3981940 (LWP 3327))]

Thread 4 (Thread 0x7fd99da9d700 (LWP 3360)):
#0  0x00007fd9b72c24cc in read () from /lib64/libc.so.6
#1  0x00007fd9b625a53f in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007fd9b621060e in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007fd9b6210a75 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#4  0x00007fd9b6210c03 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007fd9b6210c51 in glib_worker_main () from /lib64/libglib-2.0.so.0
#6  0x00007fd9b623a812 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#7  0x00007fd9b6b8c432 in start_thread () from /lib64/libpthread.so.0
#8  0x00007fd9b72d1913 in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fd9a4e01700 (LWP 3330)):
#0  0x00007fd9b625f1e8 in g_mutex_unlock () from /lib64/libglib-2.0.so.0
#1  0x00007fd9b62104d1 in g_main_context_check () from /lib64/libglib-2.0.so.0
#2  0x00007fd9b6210a75 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#3  0x00007fd9b6210c03 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007fd9b7976b8b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007fd9b792991b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007fd9b7795427 in QThread::exec() () from /lib64/libQt5Core.so.5
#7  0x00007fd9b881551b in QDBusConnectionManager::run() () from /lib64/libQt5DBus.so.5
#8  0x00007fd9b7796690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007fd9b6b8c432 in start_thread () from /lib64/libpthread.so.0
#10 0x00007fd9b72d1913 in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fd9a66e4700 (LWP 3328)):
#0  0x00007fd9b72c6aaf in poll () from /lib64/libc.so.6
#1  0x00007fd9b6b4938a in _xcb_conn_wait () from /lib64/libxcb.so.1
#2  0x00007fd9b6b4b71a in xcb_wait_for_event () from /lib64/libxcb.so.1
#3  0x00007fd9a689ac78 in QXcbEventQueue::run() () from /lib64/libQt5XcbQpa.so.5
#4  0x00007fd9b7796690 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007fd9b6b8c432 in start_thread () from /lib64/libpthread.so.0
#6  0x00007fd9b72d1913 in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fd9b3981940 (LWP 3327)):
[KCrash Handler]
#4  0x00007fd9b779afff in QThreadStorageData::get() const () from /lib64/libQt5Core.so.5
#5  0x00007fd9b7d441dc in QOpenGLContext::currentContext() () from /lib64/libQt5Gui.so.5
#6  0x00007fd9b7d1ba30 in QSurface::~QSurface() () from /lib64/libQt5Gui.so.5
#7  0x00007fd9b7d198ff in QWindow::~QWindow() () from /lib64/libQt5Gui.so.5
#8  0x00007fd9b8321410 in QWidgetWindow::~QWidgetWindow() () from /lib64/libQt5Widgets.so.5
#9  0x00007fd9b82f804f in QWidgetPrivate::deleteTLSysExtra() () from /lib64/libQt5Widgets.so.5
#10 0x00007fd9b82fda88 in QWidget::destroy(bool, bool) () from /lib64/libQt5Widgets.so.5
#11 0x00007fd9b8304ae2 in QWidget::~QWidget() () from /lib64/libQt5Widgets.so.5
#12 0x00007fd9a44151d1 in Phonon::Gstreamer::OverlayWidget::~OverlayWidget() () from /usr/lib64/qt5/plugins/phonon4qt5_backend/phonon_gstreamer.so
#13 0x00007fd9a4414bb1 in Phonon::Gstreamer::X11Renderer::~X11Renderer() () from /usr/lib64/qt5/plugins/phonon4qt5_backend/phonon_gstreamer.so
#14 0x00007fd9a440fbed in Phonon::Gstreamer::VideoWidget::~VideoWidget() () from /usr/lib64/qt5/plugins/phonon4qt5_backend/phonon_gstreamer.so
#15 0x00007fd9a440fc4d in Phonon::Gstreamer::VideoWidget::~VideoWidget() () from /usr/lib64/qt5/plugins/phonon4qt5_backend/phonon_gstreamer.so
#16 0x00007fd9b8e48718 in Phonon::MediaNodePrivate::deleteBackendObject() () from /lib64/libphonon4qt5.so.4
#17 0x00007fd9b8e35d11 in Phonon::FactoryPrivate::~FactoryPrivate() () from /lib64/libphonon4qt5.so.4
#18 0x00007fd9b8e35f6f in Phonon::._anon_392::destroy() () from /lib64/libphonon4qt5.so.4
#19 0x00007fd9b720f3a7 in __run_exit_handlers () from /lib64/libc.so.6
#20 0x00007fd9b720f550 in exit () from /lib64/libc.so.6
#21 0x00007fd9b6cfe3e3 in _XDefaultIOError () from /lib64/libX11.so.6
#22 0x00007fd9b6cfe692 in _XIOError () from /lib64/libX11.so.6
#23 0x00007fd9b6cfc65c in _XReply () from /lib64/libX11.so.6
#24 0x00007fd9b6cf7b8f in XSync () from /lib64/libX11.so.6
#25 0x00007fd9b6cd863f in XCloseDisplay () from /lib64/libX11.so.6
#26 0x00007fd99ec09a9a in gst_xvcontext_free () from /usr/lib64/gstreamer-1.0/libgstxvimagesink.so
#27 0x00007fd99ec05978 in gst_xv_image_sink_change_state () from /usr/lib64/gstreamer-1.0/libgstxvimagesink.so
#28 0x00007fd9a42c75d2 in gst_element_change_state () from /lib64/libgstreamer-1.0.so.0
#29 0x00007fd9a42c7d1d in gst_element_set_state_func () from /lib64/libgstreamer-1.0.so.0
#30 0x00007fd9a42a369c in gst_bin_change_state_func () from /lib64/libgstreamer-1.0.so.0
#31 0x00007fd9a42c75d2 in gst_element_change_state () from /lib64/libgstreamer-1.0.so.0
#32 0x00007fd9a42c7d1d in gst_element_set_state_func () from /lib64/libgstreamer-1.0.so.0
#33 0x00007fd9a42a369c in gst_bin_change_state_func () from /lib64/libgstreamer-1.0.so.0
#34 0x00007fd9a42c75d2 in gst_element_change_state () from /lib64/libgstreamer-1.0.so.0
#35 0x00007fd9a42c7d1d in gst_element_set_state_func () from /lib64/libgstreamer-1.0.so.0
#36 0x00007fd99d235fe6 in deactivate_group.isra () from /usr/lib64/gstreamer-1.0/libgstplayback.so
#37 0x00007fd99d2360bb in save_current_group.isra () from /usr/lib64/gstreamer-1.0/libgstplayback.so
#38 0x00007fd99d23742d in gst_play_bin_change_state () from /usr/lib64/gstreamer-1.0/libgstplayback.so
#39 0x00007fd9a42c75d2 in gst_element_change_state () from /lib64/libgstreamer-1.0.so.0
#40 0x00007fd9a42c7d1d in gst_element_set_state_func () from /lib64/libgstreamer-1.0.so.0
#41 0x00007fd9a440824a in Phonon::Gstreamer::Pipeline::setState(GstState) () from /usr/lib64/qt5/plugins/phonon4qt5_backend/phonon_gstreamer.so
#42 0x00007fd9a43fd01e in Phonon::Gstreamer::MediaObject::requestState(Phonon::State) () from /usr/lib64/qt5/plugins/phonon4qt5_backend/phonon_gstreamer.so
#43 0x00007fd9b7952b5e in QObject::event(QEvent*) () from /lib64/libQt5Core.so.5
#44 0x00007fd9b82c8063 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#45 0x00007fd9b792afc0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#46 0x00007fd9b792dc47 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib64/libQt5Core.so.5
#47 0x00007fd9b79770a7 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQt5Core.so.5
#48 0x00007fd9b62107af in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#49 0x00007fd9b6210b38 in g_main_context_iterate.constprop () from /lib64/libglib-2.0.so.0
#50 0x00007fd9b6210c03 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#51 0x00007fd9b7976b73 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#52 0x00007fd9b792991b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#53 0x00007fd9b79315a6 in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#54 0x000055e2af4ecab6 in main ()
[Inferior 1 (process 3327) detached]

Possible duplicates by query: bug 421429, bug 409579, bug 404273.

Reported using DrKonqi