~ % gdb kdenlive GNU gdb (GDB) 7.6.1 Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-unknown-linux-gnu". For bug reporting instructions, please see: ... Reading symbols from /usr/bin/kdenlive...(no debugging symbols found)...done. (gdb) run Starting program: /usr/bin/kdenlive warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7ffff7ffa000 warning: Could not load shared library symbols for linux-vdso.so.1. Do you need "set solib-search-path" or "set sysroot"? [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". [New Thread 0x7fffcd24c700 (LWP 1442)] QWidget::insertAction: Attempt to insert null action QWidget::insertAction: Attempt to insert null action [New Thread 0x7fffc87d7700 (LWP 1443)] [New Thread 0x7fffc7fd6700 (LWP 1444)] [Thread 0x7fffc87d7700 (LWP 1443) exited] [Thread 0x7fffc7fd6700 (LWP 1444) exited] kdenlive(1437) Render::checkMaxThreads: // TRACTOR PROBLEM [New Thread 0x7fffc7fd6700 (LWP 1445)] [New Thread 0x7fffc87d7700 (LWP 1446)] [New Thread 0x7fffc5395700 (LWP 1447)] [New Thread 0x7fffc4b94700 (LWP 1448)] [New Thread 0x7fffb7fff700 (LWP 1449)] [New Thread 0x7fffb77fe700 (LWP 1450)] [New Thread 0x7fffb6ffd700 (LWP 1451)] [New Thread 0x7fffb67fc700 (LWP 1452)] [New Thread 0x7fffb5ffb700 (LWP 1453)] [New Thread 0x7fffb57fa700 (LWP 1454)] [New Thread 0x7fffb4ff9700 (LWP 1455)] [New Thread 0x7fffb47f8700 (LWP 1456)] [Thread 0x7fffc87d7700 (LWP 1446) exited] [Thread 0x7fffc5395700 (LWP 1447) exited] [New Thread 0x7fffc5395700 (LWP 1457)] [New Thread 0x7fffc87d7700 (LWP 1458)] [New Thread 0x7fffb3ff7700 (LWP 1459)] [New Thread 0x7fffb37f6700 (LWP 1460)] [New Thread 0x7fffb2ff5700 (LWP 1461)] [New Thread 0x7fffb27f4700 (LWP 1462)] [New Thread 0x7fffb1ff3700 (LWP 1463)] [New Thread 0x7fffb17f2700 (LWP 1464)] [New Thread 0x7fffb0ff1700 (LWP 1465)] [New Thread 0x7fffb07f0700 (LWP 1466)] [New Thread 0x7fffaffef700 (LWP 1467)] [Thread 0x7fffc5395700 (LWP 1457) exited] [Thread 0x7fffc87d7700 (LWP 1458) exited] [New Thread 0x7fffc87d7700 (LWP 1468)] [New Thread 0x7fffc5395700 (LWP 1469)] [New Thread 0x7fffaf7ee700 (LWP 1470)] [New Thread 0x7fffaefed700 (LWP 1471)] [New Thread 0x7fffae7ec700 (LWP 1472)] [New Thread 0x7fffadfeb700 (LWP 1473)] [New Thread 0x7fffad7ea700 (LWP 1474)] [New Thread 0x7fffacfe9700 (LWP 1475)] [New Thread 0x7fffac7e8700 (LWP 1476)] [New Thread 0x7fffabfe7700 (LWP 1477)] [New Thread 0x7fffab7e6700 (LWP 1478)] Program received signal SIGSEGV, Segmentation fault. 0x00007ffff48dd1b8 in __lll_unlock_elision () from /usr/lib/libpthread.so.0 (gdb) bt full #0 0x00007ffff48dd1b8 in __lll_unlock_elision () from /usr/lib/libpthread.so.0 No symbol table info available. #1 0x00000000006cec0b in Render::mltEnableEffects(int, GenTime, QList, bool) () No symbol table info available. #2 0x00000000005834fc in CustomTrackView::updateEffectState(int, GenTime, QList, bool, bool) () No symbol table info available. #3 0x000000000046ea4f in ChangeEffectStateCommand::redo() () No symbol table info available. #4 0x00007ffff5c83783 in QUndoStack::push(QUndoCommand*) () from /usr/lib/libQtGui.so.4 No symbol table info available. #5 0x0000000000583b1f in CustomTrackView::slotChangeEffectState(ClipItem*, int, QList, bool) () No symbol table info available. #6 0x000000000045e13e in CustomTrackView::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) [clone .part.88] () No symbol table info available. #7 0x00007ffff4c78b48 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4 No symbol table info available. #8 0x00000000004a4dbc in EffectStackView2::changeEffectState(ClipItem*, int, QList, bool) () No symbol table info available. #9 0x00000000004a6476 in EffectStackView2::slotUpdateEffectState(bool, int, bool) () No symbol table info available. #10 0x00000000004a9ae9 in EffectStackView2::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) [clone .part.61] () No symbol table info available. #11 0x00007ffff4c78b48 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4 No symbol table info available. #12 0x000000000045891c in CollapsibleEffect::effectStateChanged(bool, int, bool) () No symbol table info available. #13 0x000000000049b235 in CollapsibleEffect::slotDisable(bool, bool) () No symbol table info available. #14 0x000000000045bef9 in CollapsibleEffect::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) [clone .part.75] () ---Type to continue, or q to quit--- No symbol table info available. #15 0x00007ffff4c78b48 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4 No symbol table info available. #16 0x00007ffff5c9ab02 in QAbstractButton::toggled(bool) () from /usr/lib/libQtGui.so.4 No symbol table info available. #17 0x00007ffff5a00798 in QAbstractButton::setChecked(bool) () from /usr/lib/libQtGui.so.4 No symbol table info available. #18 0x00007ffff5a003b2 in ?? () from /usr/lib/libQtGui.so.4 No symbol table info available. #19 0x00007ffff5a004dc in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/libQtGui.so.4 No symbol table info available. #20 0x00007ffff5ab737a in QToolButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/libQtGui.so.4 No symbol table info available. #21 0x00007ffff56a167e in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4 No symbol table info available. #22 0x00007ffff565212c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4 No symbol table info available. #23 0x00007ffff565882d in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4 No symbol table info available. #24 0x00007ffff79b183a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5 No symbol table info available. #25 0x00007ffff4c64ebd in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4 No symbol table info available. #26 0x00007ffff5657fe3 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer&, bool) () from /usr/lib/libQtGui.so.4 No symbol table info available. #27 0x00007ffff56c9bfb in ?? () from /usr/lib/libQtGui.so.4 No symbol table info available. #28 0x00007ffff56c866c in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4 No symbol table info available. ---Type to continue, or q to quit--- #29 0x00007ffff56ef1b2 in ?? () from /usr/lib/libQtGui.so.4 No symbol table info available. #30 0x00007fffefd96256 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #31 0x00007fffefd965a8 in ?? () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #32 0x00007fffefd9664c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0 No symbol table info available. #33 0x00007ffff4c91b25 in QEventDispatcherGlib::processEvents(QFlags) () from /usr/lib/libQtCore.so.4 No symbol table info available. #34 0x00007ffff56ef266 in ?? () from /usr/lib/libQtGui.so.4 No symbol table info available. #35 0x00007ffff4c63b1f in QEventLoop::processEvents(QFlags) () from /usr/lib/libQtCore.so.4 No symbol table info available. #36 0x00007ffff4c63e15 in QEventLoop::exec(QFlags) () from /usr/lib/libQtCore.so.4 No symbol table info available. #37 0x00007ffff4c68f4b in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4 No symbol table info available. #38 0x0000000000455a99 in main () No symbol table info available.