0x00007f7ba1c665e2 in waitpid () from /lib64/libpthread.so.0 Traceback (most recent call last): File "/usr/share/gdb/auto-load/usr/lib64/libgobject-2.0.so.0.3800.2-gdb.py", line 9, in from gobject import register File "/usr/share/glib-2.0/gdb/gobject.py", line 3, in import gdb.backtrace ImportError: No module named backtrace Thread 10 (Thread 0x7f7b97d4b700 (LWP 9566)): #0 0x00007f7ba116506d in poll () from /lib64/libc.so.6 #1 0x00007f7ba04151e2 in ?? () from /usr/lib64/libxcb.so.1 #2 0x00007f7ba0416a2f in xcb_wait_for_event () from /usr/lib64/libxcb.so.1 #3 0x00007f7b99520509 in ?? () from /usr/lib64/qt5/plugins/platforms/libqxcb.so #4 0x00007f7ba2166950 in ?? () from /usr/lib64/libQt5Core.so.5 #5 0x00007f7ba1c5f0db in start_thread () from /lib64/libpthread.so.0 #6 0x00007f7ba116de3d in clone () from /lib64/libc.so.6 Thread 9 (Thread 0x7f7b8d907700 (LWP 9567)): #0 0x00007f7ba116506d in poll () from /lib64/libc.so.6 #1 0x00007f7ba3e8d604 in ?? () from /usr/lib64/libglib-2.0.so.0 #2 0x00007f7ba3e8da6a in g_main_loop_run () from /usr/lib64/libglib-2.0.so.0 #3 0x00007f7ba48c6c16 in ?? () from /usr/lib64/libgio-2.0.so.0 #4 0x00007f7ba3eb2035 in ?? () from /usr/lib64/libglib-2.0.so.0 #5 0x00007f7ba1c5f0db in start_thread () from /lib64/libpthread.so.0 #6 0x00007f7ba116de3d in clone () from /lib64/libc.so.6 Thread 8 (Thread 0x7f7b8d106700 (LWP 9568)): #0 0x00007f7ba116506d in poll () from /lib64/libc.so.6 #1 0x00007f7ba3e8d604 in ?? () from /usr/lib64/libglib-2.0.so.0 #2 0x00007f7ba3e8d70c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0 #3 0x00007f7ba3e8d759 in ?? () from /usr/lib64/libglib-2.0.so.0 #4 0x00007f7ba3eb2035 in ?? () from /usr/lib64/libglib-2.0.so.0 #5 0x00007f7ba1c5f0db in start_thread () from /lib64/libpthread.so.0 #6 0x00007f7ba116de3d in clone () from /lib64/libc.so.6 Thread 7 (Thread 0x7f7b6ab3a700 (LWP 9617)): #0 0x00007f7ba116506d in poll () from /lib64/libc.so.6 #1 0x00007f7b745d8ae1 in ?? () from /usr/lib64/libpulse.so.0 #2 0x00007f7b745ca38c in pa_mainloop_poll () from /usr/lib64/libpulse.so.0 #3 0x00007f7b745ca9fe in pa_mainloop_iterate () from /usr/lib64/libpulse.so.0 #4 0x00007f7b745caab0 in pa_mainloop_run () from /usr/lib64/libpulse.so.0 #5 0x00007f7b745d8a93 in ?? () from /usr/lib64/libpulse.so.0 #6 0x00007f7b74177848 in ?? () from /usr/lib64/pulseaudio/libpulsecommon-5.0.so #7 0x00007f7ba1c5f0db in start_thread () from /lib64/libpthread.so.0 #8 0x00007f7ba116de3d in clone () from /lib64/libc.so.6 Thread 6 (Thread 0x7f7b49840700 (LWP 9630)): #0 0x00007f7ba1c63458 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00007f7ba3ecd5f5 in g_cond_wait_until () from /usr/lib64/libglib-2.0.so.0 #2 0x00007f7ba3e63a71 in ?? () from /usr/lib64/libglib-2.0.so.0 #3 0x00007f7ba3eb29c8 in ?? () from /usr/lib64/libglib-2.0.so.0 #4 0x00007f7ba3eb2035 in ?? () from /usr/lib64/libglib-2.0.so.0 #5 0x00007f7ba1c5f0db in start_thread () from /lib64/libpthread.so.0 #6 0x00007f7ba116de3d in clone () from /lib64/libc.so.6 Thread 5 (Thread 0x7f7b8c0a5700 (LWP 9631)): #0 0x00007f7ba1c630af in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00007f7ba878c4ac in ?? () from /usr/lib64/libjack.so.0 #2 0x00007f7ba8783cc8 in ?? () from /usr/lib64/libjack.so.0 #3 0x00007f7ba878b5a0 in ?? () from /usr/lib64/libjack.so.0 #4 0x00007f7ba1c5f0db in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7ba116de3d in clone () from /lib64/libc.so.6 Thread 4 (Thread 0x7f7b7cad0700 (LWP 9632)): #0 0x00007f7ba1c65b7d in read () from /lib64/libpthread.so.0 #1 0x00007f7ba878cca4 in ?? () from /usr/lib64/libjack.so.0 #2 0x00007f7ba878f57c in ?? () from /usr/lib64/libjack.so.0 #3 0x00007f7ba878b5a0 in ?? () from /usr/lib64/libjack.so.0 #4 0x00007f7ba1c5f0db in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7ba116de3d in clone () from /lib64/libc.so.6 Thread 3 (Thread 0x7f7b76871700 (LWP 9633)): #0 0x00007f7ba1c630af in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00007f7ba2166eea in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQt5Core.so.5 #2 0x00000000004505e4 in qtractorAudioBufferThread::run (this=0x2bde7a0) at qtractorAudioBuffer.cpp:146 #3 0x00007f7ba2166950 in ?? () from /usr/lib64/libQt5Core.so.5 #4 0x00007f7ba1c5f0db in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7ba116de3d in clone () from /lib64/libc.so.6 Thread 2 (Thread 0x7f7b76070700 (LWP 9634)): #0 0x00007f7ba1c630af in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00007f7ba2166eea in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQt5Core.so.5 #2 0x000000000053e99f in qtractorMidiSyncThread::run (this=0x1eb3ed0) at qtractorMidiManager.cpp:149 #3 0x00007f7ba2166950 in ?? () from /usr/lib64/libQt5Core.so.5 #4 0x00007f7ba1c5f0db in start_thread () from /lib64/libpthread.so.0 #5 0x00007f7ba116de3d in clone () from /lib64/libc.so.6 Thread 1 (Thread 0x7f7ba8b6b9c0 (LWP 9565)): #0 0x00007f7ba1c665e2 in waitpid () from /lib64/libpthread.so.0 #1 0x000000000044977d in stacktrace (signo=11) at qtractor.cpp:402 #2 #3 0x000000000193b810 in ?? () #4 0x00007f7b8c40fc91 in fluid_hashtable_lookup () from /usr/lib64/libfluidsynth.so.1 #5 0x00007f7b8c411c6e in ?? () from /usr/lib64/libfluidsynth.so.1 #6 0x00007f7b8c413414 in fluid_settings_setnum () from /usr/lib64/libfluidsynth.so.1 #7 0x00007f7b8c702f79 in ?? () from /usr/lib64/dssi/fluidsynth-dssi.so #8 0x00000000004d2476 in qtractorLadspaPlugin::setChannels (this=0x2306e80, iChannels=2) at qtractorLadspaPlugin.cpp:331 #9 0x00000000004a2610 in qtractorDssiPlugin::setChannels (this=0x2306e80, iChannels=2) at qtractorDssiPlugin.cpp:959 #10 0x0000000000570811 in qtractorPluginList::setChannelsEx (this=0x2303e10, iChannels=2, bReset=false) at qtractorPlugin.cpp:1441 #11 0x000000000057056c in qtractorPluginList::setChannels (this=0x2303e10, iChannels=2, iFlags=1) at qtractorPlugin.cpp:1387 #12 0x00000000005a217b in qtractorTrack::open (this=0x2303a90) at qtractorTrack.cpp:541 #13 0x000000000058ae9d in qtractorSession::insertTrack (this=0x19ab010, pTrack=0x2303a90, pPrevTrack=0x0) at qtractorSession.cpp:900 #14 0x000000000058ad66 in qtractorSession::addTrack (this=0x19ab010, pTrack=0x2303a90) at qtractorSession.cpp:863 #15 0x000000000058f268 in qtractorSession::loadElement (this=0x19ab010, pDocument=0x7ffd61b32f60, pElement=0x7ffd61b32bb0) at qtractorSession.cpp:2067 #16 0x0000000000595ebd in qtractorSessionDocument::loadElement (this=0x7ffd61b32f60, pElement=0x7ffd61b32bb0) at qtractorSessionDocument.cpp:65 #17 0x000000000049376c in qtractorDocument::load (this=0x7ffd61b32f60, sFilename=..., flags=qtractorDocument::Default) at qtractorDocument.cpp:237 #18 0x0000000000623d2f in qtractorMainForm::loadSessionFileEx (this=0x7ffd61b34440, sFilename=..., bTemplate=false, bUpdate=true) at qtractorMainForm.cpp:2305 #19 0x00000000006244ed in qtractorMainForm::loadSessionFile (this=0x7ffd61b34440, sFilename=...) at qtractorMainForm.cpp:2377 #20 0x0000000000621548 in qtractorMainForm::openSession (this=0x7ffd61b34440) at qtractorMainForm.cpp:1919 #21 0x0000000000626c2c in qtractorMainForm::fileOpen (this=0x7ffd61b34440) at qtractorMainForm.cpp:2835 #22 0x00000000006fca65 in qtractorMainForm::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () #23 0x00007f7ba2304596 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQt5Core.so.5 #24 0x00007f7ba3093242 in QAction::triggered(bool) () from /usr/lib64/libQt5Widgets.so.5 #25 0x00007f7ba3095558 in QAction::activate(QAction::ActionEvent) () from /usr/lib64/libQt5Widgets.so.5 #26 0x00007f7ba318e58d in ?? () from /usr/lib64/libQt5Widgets.so.5 #27 0x00007f7ba318e6c4 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib64/libQt5Widgets.so.5 #28 0x00007f7ba3246a5a in QToolButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib64/libQt5Widgets.so.5 #29 0x00007f7ba30d3e59 in QWidget::event(QEvent*) () from /usr/lib64/libQt5Widgets.so.5 #30 0x00007f7ba3246b39 in QToolButton::event(QEvent*) () from /usr/lib64/libQt5Widgets.so.5 #31 0x00007f7ba309a1ec in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5 #32 0x00007f7ba309fb49 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5 #33 0x00007f7ba22de9cd in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5 #34 0x00007f7ba309de71 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer&, bool) () from /usr/lib64/libQt5Widgets.so.5 #35 0x00007f7ba30efaef in ?? () from /usr/lib64/libQt5Widgets.so.5 #36 0x00007f7ba30f1803 in ?? () from /usr/lib64/libQt5Widgets.so.5 #37 0x00007f7ba309a1ec in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5 #38 0x00007f7ba309f2d6 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5 #39 0x00007f7ba22de9cd in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5 #40 0x00007f7ba27ce3c7 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/lib64/libQt5Gui.so.5 #41 0x00007f7ba27cfec5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib64/libQt5Gui.so.5 #42 0x00007f7ba27ba608 in QWindowSystemInterface::sendWindowSystemEventsImplementation(QFlags) () from /usr/lib64/libQt5Gui.so.5 #43 0x00007f7b9953f130 in ?? () from /usr/lib64/qt5/plugins/platforms/libqxcb.so #44 0x00007f7ba3e8d316 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0 #45 0x00007f7ba3e8d668 in ?? () from /usr/lib64/libglib-2.0.so.0 #46 0x00007f7ba3e8d70c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0 #47 0x00007f7ba23259cc in QEventDispatcherGlib::processEvents(QFlags) () from /usr/lib64/libQt5Core.so.5 #48 0x00007f7ba22dd71b in QEventLoop::exec(QFlags) () from /usr/lib64/libQt5Core.so.5 #49 0x00007f7ba22e3ca1 in QCoreApplication::exec() () from /usr/lib64/libQt5Core.so.5 #50 0x000000000044c36d in main (argc=1, argv=0x7ffd61b34e78) at qtractor.cpp:656