Thread 1 "kdenlive" received signal SIGSEGV, Segmentation fault.
0x00007ffff2366864 in QOpenGLContext::makeCurrent(QSurface*) () from /usr/lib/libQt5Gui.so.5
(gdb) thread apply all bt full
Thread 1 (Thread 0x7fffec547dc0 (LWP 23285)):
#0 0x00007ffff2366864 in QOpenGLContext::makeCurrent(QSurface*) () at /usr/lib/libQt5Gui.so.5
#1 0x0000555556c47824 in GLWidget::initializeGL() (this=0x615000257180) at /home/farid/kdenlive/src/monitor/glwidget.cpp:174
#2 0x0000555556cabff0 in Monitor::slotOpenDvdFile(QString const&) (this=0x6140009a8e40, file=...) at /home/farid/kdenlive/src/monitor/monitor.cpp:1467
#3 0x00005555568de37e in DvdWizardChapters::slotUpdateChaptersList() (this=0x6110010db7c0) at /home/farid/kdenlive/src/dvdwizard/dvdwizardchapters.cpp:73
 currentChaps = {> = {> = {}, {p = {static shared_null = {ref = {atomic = {_q_value = {> = {static _S_alignment = 4, _M_i = -1}, }}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x7fffffff8580}, d = 0x7fffffff8580}}, }
 chaptersString = {> = {> = {}, {p = {static shared_null = {ref = {atomic = {_q_value = {> = {static _S_alignment = 4, _M_i = -1}, }}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x555557ac5960 }, d = 0x555557ac5960 }}, }
#4 0x00005555568e1548 in DvdWizardChapters::slotEnableChapters(int) (this=0x6110010db7c0, state=2) at /home/farid/kdenlive/src/dvdwizard/dvdwizardchapters.cpp:274
#5 0x00005555568e8cd6 in QtPrivate::FunctorCall, QtPrivate::List, void, void (DvdWizardChapters::*)(int)>::call(void (DvdWizardChapters::*)(int), DvdWizardChapters*, void**) (f=(void (DvdWizardChapters::*--Type for more, q to quit, c to continue without paging--
)(DvdWizardChapters * const, int)) 0x5555568e13e0 , o=0x6110010db7c0, arg=0x7fffffff8dd0) at /usr/include/qt/QtCore/qobjectdefs_impl.h:152
#6 0x00005555568e88ae in QtPrivate::FunctionPointer::call, void>(void (DvdWizardChapters::*)(int), DvdWizardChapters*, void**) (f=(void (DvdWizardChapters::*)(DvdWizardChapters * const, int)) 0x5555568e13e0 , o=0x6110010db7c0, arg=0x7fffffff8dd0) at /usr/include/qt/QtCore/qobjectdefs_impl.h:185
#7 0x00005555568e83ba in QtPrivate::QSlotObject, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) (which=1, this_=0x603000e00170, r=0x6110010db7c0, a=0x7fffffff8dd0, ret=0x0) at /usr/include/qt/QtCore/qobjectdefs_impl.h:414
#8 0x00007ffff1f9646e in () at /usr/lib/libQt5Core.so.5
#9 0x00007ffff67b366f in QCheckBox::stateChanged(int) () at /usr/lib/libQt5Widgets.so.5
#10 0x00007ffff67a409d in () at /usr/lib/libQt5Widgets.so.5
#11 0x00007ffff67a42c6 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () at /usr/lib/libQt5Widgets.so.5
#12 0x00007ffff66ec4de in QWidget::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#13 0x00007ffff66a8362 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#14 0x00007ffff66b1a68 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#15 0x00007ffff1f60962 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#16 0x00007ffff66b0afb in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer&, bool, bool) () at /usr/lib/libQt5Widgets.so.5
#17 0x00007ffff6707c91 in () at /usr/lib/libQt5Widgets.so.5
#18 0x00007ffff670ac14 in () at /usr/lib/libQt5Widgets.so.5
#19 0x00007ffff66a8362 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#20 0x00007ffff66b1819 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#21 0x00007ffff1f60962 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#22 0x00007ffff23275d4 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib/libQt5Gui.so.5 
#23 0x00007ffff2328d16 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/libQt5Gui.so.5
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#24 0x00007ffff2301c2c in QWindowSystemInterface::sendWindowSystemEvents(QFlags) () at /usr/lib/libQt5Gui.so.5 
#25 0x00007fffe8d1ebac in () at /usr/lib/libQt5XcbQpa.so.5
#26 0x00007fffefc4439e in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#27 0x00007fffefc461b1 in () at /usr/lib/libglib-2.0.so.0
#28 0x00007fffefc461f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#29 0x00007ffff1fb9020 in QEventDispatcherGlib::processEvents(QFlags) () at /usr/lib/libQt5Core.so.5 
#30 0x00007ffff1f5f4cc in QEventLoop::exec(QFlags) () at /usr/lib/libQt5Core.so.5
#31 0x00007ffff68b662e in QDialog::exec() () at /usr/lib/libQt5Widgets.so.5
#32 0x0000555555e23db5 in MainWindow::slotDvdWizard(QString const&) (this=0x61700000ee80, url=...) at /home/farid/kdenlive/src/mainwindow.cpp:3172
 w = {wp = {d = 0x6020004e0230, value = 0x615000209700}}
#33 0x0000555555fe9b2e in MainWindow::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=0x61700000ee80, _c=QMetaObject::InvokeMetaMethod, _id=120, _a=0x7fffffffafe0) at kdenliveLib_autogen/EWIEGA46WW/moc_mainwindow.cpp:887
 _t = 0x61700000ee80
#34 0x00007ffff1f964a0 in () at /usr/lib/libQt5Core.so.5
#35 0x00007ffff66a1f33 in QAction::triggered(bool) () at /usr/lib/libQt5Widgets.so.5
#36 0x00007ffff66a461c in QAction::activate(QAction::ActionEvent) () at /usr/lib/libQt5Widgets.so.5
#37 0x00007ffff68317f3 in () at /usr/lib/libQt5Widgets.so.5
#38 0x00007ffff68390ac in () at /usr/lib/libQt5Widgets.so.5
#39 0x00007ffff683a0f3 in QMenu::mouseReleaseEvent(QMouseEvent*) () at /usr/lib/libQt5Widgets.so.5
#40 0x00007ffff66ec4de in QWidget::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#41 0x00007ffff683c74c in QMenu::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#42 0x00007ffff66a8362 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#43 0x00007ffff66b1a68 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#44 0x00007ffff1f60962 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
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#45 0x00007ffff66b0afb in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer&, bool, bool) () at /usr/lib/libQt5Widgets.so.5
#46 0x00007ffff6708628 in () at /usr/lib/libQt5Widgets.so.5
#47 0x00007ffff670ac14 in () at /usr/lib/libQt5Widgets.so.5
#48 0x00007ffff66a8362 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#49 0x00007ffff66b1819 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#50 0x00007ffff1f60962 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#51 0x00007ffff23275d4 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib/libQt5Gui.so.5
#52 0x00007ffff2328d16 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/libQt5Gui.so.5
#53 0x00007ffff2301c2c in QWindowSystemInterface::sendWindowSystemEvents(QFlags) () at /usr/lib/libQt5Gui.so.5
#54 0x00007fffe8d1ebac in () at /usr/lib/libQt5XcbQpa.so.5
#55 0x00007fffefc4439e in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#56 0x00007fffefc461b1 in () at /usr/lib/libglib-2.0.so.0
#57 0x00007fffefc461f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#58 0x00007ffff1fb9020 in QEventDispatcherGlib::processEvents(QFlags) () at /usr/lib/libQt5Core.so.5
#59 0x00007ffff1f5f4cc in QEventLoop::exec(QFlags) () at /usr/lib/libQt5Core.so.5
#60 0x00007ffff1f674d6 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#61 0x0000555555c6d3a6 in main(int, char**) (argc=1, argv=0x7fffffffe6b8) at /home/farid/kdenlive/src/main.cpp:242
 app = 
 config = {d = 0x6030000248e0}
 grp = 
 programDBusService = 
 aboutData = {static staticMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7ffff6e1f3c0, data = 0x7ffff6e1f2c0, static_metacall = 0x7ffff6dbe0f0, relatedMetaObjects = 0x0, extradata = 0x0}}, d = 0x610000008d40}
--Type for more, q to quit, c to continue without paging--
 parser = {d = 0x6080000454a0}
 clipsToLoad = {static null = {}, d = 0x7ffff2048840 }
 url = {d = 0x0}
 forceBreeze = true
 loader = 0x7ffff75d4040
 result = 21845