Application: dolphin (17.12.3)

Qt Version: 5.9.5
Frameworks Version: 5.47.0
Operating System: Linux 4.15.0-74-generic x86_64
Distribution: Ubuntu 18.04.3 LTS

-- Information about the crash:
- What I was doing when the application crashed:
i was playing the video from preview panel and when i clicked out from the file dolphin started to "blink"...after a few clicks in different folders dolphin dissapeared an dr. konqi came....

nice day
Simon

The crash can be reproduced sometimes.

-- Backtrace:
Application: Dolphin (dolphin), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f4d6b38c800 (LWP 13078))]

Thread 5 (Thread 0x7f0ce2651700 (LWP 22053)):
#0  0x00007f4d730ea3bb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d32c8b86f0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f4d730ea3bb in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d32c8b86a0, cond=0x55d32c8b86c8) at pthread_cond_wait.c:502
#2  0x00007f4d730ea3bb in __pthread_cond_wait (cond=0x55d32c8b86c8, mutex=0x55d32c8b86a0) at pthread_cond_wait.c:655
#3  0x00007f4d77c095ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4d77c01c1b in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4d54c2480c in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/texttospeech/libqttexttospeech_flite.so
#6  0x00007f4d77c0817d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4d730e4182 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007f4d7dc3fb1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f4d56a1f700 (LWP 13082)):
#0  0x00007f4d7dc2efb4 in __GI___libc_read (nbytes=16, buf=0x7f4d56a1eb90, fd=18) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f4d7dc2efb4 in __GI___libc_read (fd=18, buf=0x7f4d56a1eb90, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f4d711af2d0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4d7116a0b7 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4d7116a570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4d7116a6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f4d77e3f99b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4d77de49fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4d77c0323a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f4d77c0817d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f4d730e4182 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007f4d7dc3fb1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f4d5f9e2700 (LWP 13081)):
#0  0x00007f4d730ea3bb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d30aa36b58) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f4d730ea3bb in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d30aa36b08, cond=0x55d30aa36b30) at pthread_cond_wait.c:502
#2  0x00007f4d730ea3bb in __pthread_cond_wait (cond=0x55d30aa36b30, mutex=0x55d30aa36b08) at pthread_cond_wait.c:655
#3  0x00007f4d6488bc3b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f4d6488b837 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f4d730e4182 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f4d7dc3fb1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f4d68347700 (LWP 13080)):
#0  0x00007ffe9ed4bb62 in clock_gettime ()
#1  0x00007f4d7dc4e6e6 in __GI___clock_gettime (clock_id=1, tp=0x7f4d68346ae0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f4d77e3f2b1 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f4d77e3dae9 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4d77e3e0c5 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4d77e3f70e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4d71169b28 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f4d7116a4fb in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f4d7116a6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f4d77e3f99b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f4d77de49fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f4d77c0323a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f4d782bcd45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#13 0x00007f4d77c0817d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f4d730e4182 in start_thread (arg=<optimized out>) at pthread_create.c:486
#15 0x00007f4d7dc3fb1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f4d6b38c800 (LWP 13078)):
[KCrash Handler]
#6  0x00007f4d7db65ed7 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#7  0x00007f4d7db47535 in __GI_abort () at abort.c:79
#8  0x00007f4d6a98bdef in  ()
#9  0x00007f4d6a987c3d in wl_proxy_marshal_array_constructor_versioned () at /usr/lib/x86_64-linux-gnu/libwayland-client.so.0
#10 0x00007f4d6a987e5a in wl_proxy_marshal_constructor () at /usr/lib/x86_64-linux-gnu/libwayland-client.so.0
#11 0x00007f4d6abf23b9 in QtWaylandClient::QWaylandWindow::initWindow() () at /usr/lib/x86_64-linux-gnu/libQt5WaylandClient.so.5
#12 0x00007f4d6abf2baa in QtWaylandClient::QWaylandWindow::setVisible(bool) () at /usr/lib/x86_64-linux-gnu/libQt5WaylandClient.so.5
#13 0x00007f4d66f30554 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/wayland-graphics-integration-client/libqt-plugin-wayland-egl.so
#14 0x00007f4d7863be65 in QWindow::setVisible(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#15 0x00007f4d78e21008 in QWidgetPrivate::show_sys() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f4d78e29f20 in QWidgetPrivate::show_helper() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f4d78e29dee in QWidgetPrivate::showChildren(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f4d78e29eef in QWidgetPrivate::show_helper() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f4d78e2cbeb in QWidget::setVisible(bool) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007f4d7dd6e85b in  () at /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#21 0x00007f4d7dd6cb41 in  () at /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#22 0x00007f4d77e1575f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f4d77e220b7 in QTimer::timeout(QTimer::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f4d77e22418 in QTimer::timerEvent(QTimerEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f4d77e1616b in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f4d78dee83c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007f4d78df6104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f4d77de69c8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f4d77e3ee1e in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f4d77e3f5e1 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f4d7116a417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f4d7116a650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f4d7116a6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f4d77e3f97f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007f4d77de49fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007f4d77dedaa4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007f4d7dd50baa in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#38 0x00007f4d7db48b6b in __libc_start_main (main=0x55d30885f730, argc=1, argv=0x7ffe9ed40658, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe9ed40648) at ../csu/libc-start.c:308
#39 0x000055d30885f76a in _start ()

Reported using DrKonqi