Application: spectacle (18.08.3 - A Dearth of Dank Memes)
 (Compiled from sources)
Qt Version: 5.11.3
Frameworks Version: 5.52.0
Operating System: Linux 4.9.76-gentoo-r1 x86_64
Distribution: "Gentoo Base System release 2.6"

-- Information about the crash:
- What I was doing when the application crashed:

Selected the type of screen capture to be: select rectangular area.
There's 2 x 4K screens. Spectacle window was on (primary) LHS screen.
Selection was about to be made on RHS second 4K screen. Crashed
before the screen usually goes dim to allow dragged-rectangular
selection to be made.

gentoo linux

Linux west.da.uts.edu.au 4.9.76-gentoo-r1 #1 SMP Tue Jan 30 18:27:33 AEDT 2018 x86_64 Intel(R) Core(TM) i5-4690 CPU @ 3.50GHz GenuineIntel GNU/Linux

kde-apps/spectacle-18.08.3:5

-- Backtrace:
Application: Spectacle (spectacle), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f0f1f8d2780 (LWP 13059))]

Thread 4 (Thread 0x7f0efb5c4700 (LWP 13158)):
#0  0x00007f0f19c8eb6e in socketNotifierSourceCheck (source=0x7f0ef4004820) at kernel/qeventdispatcher_glib.cpp:75
#1  0x00007f0f12f79ad1 in g_main_context_check (context=context@entry=0x7f0ef4000bf0, max_priority=2147483647, fds=fds@entry=0x7f0ef4004a00, n_fds=n_fds@entry=1) at /usr/src/debug/dev-libs/glib-2.56.4/glib-2.56.4/glib/gmain.c:3735
#2  0x00007f0f12f7a060 in g_main_context_iterate (context=context@entry=0x7f0ef4000bf0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /usr/src/debug/dev-libs/glib-2.56.4/glib-2.56.4/glib/gmain.c:3899
#3  0x00007f0f12f7a1cc in g_main_context_iteration (context=0x7f0ef4000bf0, may_block=may_block@entry=1) at /usr/src/debug/dev-libs/glib-2.56.4/glib-2.56.4/glib/gmain.c:3963
#4  0x00007f0f19c8e51b in QEventDispatcherGlib::processEvents (this=0x7f0ef4000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f0f19c30fab in QEventLoop::exec (this=this@entry=0x7f0efb5c3e00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#6  0x00007f0f19a76d7a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#7  0x00007f0f1dc2e2e5 in ?? () from /usr/lib64/libQt5Qml.so.5
#8  0x00007f0f19a82566 in QThreadPrivate::start (arg=0x55e0f5485750) at thread/qthread_unix.cpp:367
#9  0x00007f0f1641896a in start_thread () from /lib64/libpthread.so.0
#10 0x00007f0f1930891f in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f0f08c00700 (LWP 13069)):
#0  QMutex::unlock (this=0x55e0f5384010) at thread/qmutex.cpp:337
#1  0x00007f0f19c8e416 in QMutexLocker::unlock (this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:219
#2  QMutexLocker::~QMutexLocker (this=<synthetic pointer>, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:213
#3  QThreadData::canWaitLocked (this=<optimized out>) at ../../include/QtCore/5.11.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:254
#4  postEventSourcePrepare (s=0x7f0efc004ba0, timeout=timeout@entry=0x7f0f08bffc24) at kernel/qeventdispatcher_glib.cpp:259
#5  0x00007f0f12f79618 in g_main_context_prepare (context=context@entry=0x7f0efc000bf0, priority=priority@entry=0x7f0f08bffcb0) at /usr/src/debug/dev-libs/glib-2.56.4/glib-2.56.4/glib/gmain.c:3474
#6  0x00007f0f12f79feb in g_main_context_iterate (context=context@entry=0x7f0efc000bf0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /usr/src/debug/dev-libs/glib-2.56.4/glib-2.56.4/glib/gmain.c:3882
#7  0x00007f0f12f7a1cc in g_main_context_iteration (context=0x7f0efc000bf0, may_block=may_block@entry=1) at /usr/src/debug/dev-libs/glib-2.56.4/glib-2.56.4/glib/gmain.c:3963
#8  0x00007f0f19c8e51b in QEventDispatcherGlib::processEvents (this=0x7f0efc000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#9  0x00007f0f19c30fab in QEventLoop::exec (this=this@entry=0x7f0f08bffdf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#10 0x00007f0f19a76d7a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#11 0x00007f0f1a333de5 in ?? () from /usr/lib64/libQt5DBus.so.5
#12 0x00007f0f19a82566 in QThreadPrivate::start (arg=0x7f0f1a5abd60) at thread/qthread_unix.cpp:367
#13 0x00007f0f1641896a in start_thread () from /lib64/libpthread.so.0
#14 0x00007f0f1930891f in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f0f0c63e700 (LWP 13064)):
#0  0x00007f0f192fcd43 in poll () from /lib64/libc.so.6
#1  0x00007f0f1d09e7f7 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007f0f1d0a042a in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007f0f0e7c27a9 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f0f19a82566 in QThreadPrivate::start (arg=0x55e0f5317400) at thread/qthread_unix.cpp:367
#5  0x00007f0f1641896a in start_thread () from /lib64/libpthread.so.0
#6  0x00007f0f1930891f in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f0f1f8d2780 (LWP 13059)):
[KCrash Handler]
#6  0x00007f0f1923a80b in raise () from /lib64/libc.so.6
#7  0x00007f0f1923c051 in abort () from /lib64/libc.so.6
#8  0x00007f0f19a56461 in qt_message_fatal (context=..., message=<synthetic pointer>...) at global/qlogging.cpp:1840
#9  QMessageLogger::fatal (this=<optimized out>, msg=<optimized out>) at global/qlogging.cpp:880
#10 0x00007f0f1e10bc1d in QSGRenderLoop::handleContextCreationFailure(QQuickWindow*, bool) () from /usr/lib64/libQt5Quick.so.5
#11 0x00007f0f1e10ca0d in ?? () from /usr/lib64/libQt5Quick.so.5
#12 0x00007f0f1e10d7aa in ?? () from /usr/lib64/libQt5Quick.so.5
#13 0x00007f0f1a916705 in QWindow::event(QEvent*) () from /usr/lib64/libQt5Gui.so.5
#14 0x00007f0f1e186ba5 in QQuickWindow::event(QEvent*) () from /usr/lib64/libQt5Quick.so.5
#15 0x00007f0f1b9a220c in QApplicationPrivate::notify_helper (this=this@entry=0x55e0f531dcc0, receiver=receiver@entry=0x55e0f547e4e0, e=e@entry=0x7ffe48044740) at kernel/qapplication.cpp:3726
#16 0x00007f0f1b9a97ef in QApplication::notify (this=0x7ffe48044cf0, receiver=0x55e0f547e4e0, e=0x7ffe48044740) at kernel/qapplication.cpp:3485
#17 0x00007f0f19c327c7 in QCoreApplication::notifyInternal2 (receiver=0x55e0f547e4e0, event=0x7ffe48044740) at kernel/qcoreapplication.cpp:1047
#18 0x00007f0f1a90c03f in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () from /usr/lib64/libQt5Gui.so.5
#19 0x00007f0f1a90ccbd in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib64/libQt5Gui.so.5
#20 0x00007f0f1a8e7dbb in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Gui.so.5
#21 0x00007f0f0e84b74b in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#22 0x00007f0f19c30fab in QEventLoop::exec (this=this@entry=0x7ffe480448e0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#23 0x00007f0f19c3a8b0 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1335
#24 0x000055e0f50c9b22 in ?? ()
#25 0x00007f0f19225b87 in __libc_start_main () from /lib64/libc.so.6
#26 0x000055e0f50c9f9a in _start ()

Possible duplicates by query: bug 401442.

Reported using DrKonqi