Application: plasma-discover (5.12.6)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 4.17.8-041708-generic x86_64
Distribution: Ubuntu 18.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Starting the application
 
The applicaton shows the initial windows with no content (bitmap of the desktop).

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f5897d9f800 (LWP 25719))]

Thread 11 (Thread 0x7f584b7fe700 (LWP 25730)):
#0  0x00007f589336fbf9 in __GI___poll (fds=0x7f58400018a0, nfds=1, timeout=8884) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f588db62439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f588db6254c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5893cbd90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5893c629ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5893a8122a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5893a8616d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f588fc8f6db in start_thread (arg=0x7f584b7fe700) at pthread_create.c:463
#8  0x00007f589337c88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f5850f91700 (LWP 25728)):
#0  0x00007f589336fbf9 in __GI___poll (fds=0x55cfa73e9130, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f588db62439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f588db627d2 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5852dcfe76 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f588db89e05 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f588fc8f6db in start_thread (arg=0x7f5850f91700) at pthread_create.c:463
#6  0x00007f589337c88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f5851792700 (LWP 25727)):
#0  0x00007f589336fbf9 in __GI___poll (fds=0x55cfa735be30, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f588db62439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f588db6254c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f588db62591 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f588db89e05 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f588fc8f6db in start_thread (arg=0x7f5851792700) at pthread_create.c:463
#6  0x00007f589337c88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f5860abc700 (LWP 25726)):
#0  0x00007f588fc95ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f5860abbc40, expected=0, futex_word=0x7f5854006df0) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f588fc95ed9 in __pthread_cond_wait_common (abstime=0x7f5860abbd00, mutex=0x7f5854006da0, cond=0x7f5854006dc8) at pthread_cond_wait.c:533
#2  0x00007f588fc95ed9 in __pthread_cond_timedwait (cond=0x7f5854006dc8, mutex=0x7f5854006da0, abstime=0x7f5860abbd00) at pthread_cond_wait.c:667
#3  0x00007f5893a87458 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5893a8352d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5893a8616d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f588fc8f6db in start_thread (arg=0x7f5860abc700) at pthread_create.c:463
#7  0x00007f589337c88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f58612bd700 (LWP 25725)):
#0  0x00007f589336fbf9 in __GI___poll (fds=0x7f58540049b0, nfds=1, timeout=113884) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f588db62439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f588db6254c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5893cbd90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5893c629ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5893a8122a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5893a8616d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f588fc8f6db in start_thread (arg=0x7f58612bd700) at pthread_create.c:463
#8  0x00007f589337c88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f586283e700 (LWP 25724)):
#0  0x00007f589336fbf9 in __GI___poll (fds=0x7f585c004e10, nfds=1, timeout=9884) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f588db62439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f588db6254c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5893cbd90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5893c629ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5893a8122a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5893a8616d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f588fc8f6db in start_thread (arg=0x7f586283e700) at pthread_create.c:463
#8  0x00007f589337c88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f586bfff700 (LWP 25723)):
#0  0x00007f589336fbf9 in __GI___poll (fds=0x7f5864004db0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f588db62439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f588db6254c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5893cbd90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5893c629ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5893a8122a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5896e612a6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f5893a8616d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f588fc8f6db in start_thread (arg=0x7f586bfff700) at pthread_create.c:463
#9  0x00007f589337c88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f587b153700 (LWP 25722)):
#0  0x00007f589336fbf9 in __GI___poll (fds=0x7f586c004a00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f588db62439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f588db6254c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5893cbd90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5893c629ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5893a8122a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f58946976f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f5893a8616d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f588fc8f6db in start_thread (arg=0x7f587b153700) at pthread_create.c:463
#9  0x00007f589337c88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f587c364700 (LWP 25721)):
#0  0x00007f589336fbf9 in __GI___poll (fds=0x7f5874019110, nfds=1, timeout=3884) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f588db62439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f588db6254c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5893cbd90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5893c629ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5893a8122a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5894e72d45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f5893a8616d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f588fc8f6db in start_thread (arg=0x7f587c364700) at pthread_create.c:463
#9  0x00007f589337c88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f5885713700 (LWP 25720)):
#0  0x00007f589336fbf9 in __GI___poll (fds=0x7f5885712ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f588d8f9747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f588d8fb36a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f58884c02a9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f5893a8616d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f588fc8f6db in start_thread (arg=0x7f5885713700) at pthread_create.c:463
#6  0x00007f589337c88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f5897d9f800 (LWP 25719)):
[KCrash Handler]
#6  0x00007f5893299e97 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#7  0x00007f589329b801 in __GI_abort () at abort.c:79
#8  0x00007f5893a70fa7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f5896ec42b7 in QSGRenderLoop::handleContextCreationFailure(QQuickWindow*, bool) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f5896ec5285 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f5896ec5eaa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f5895788375 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007f5896f3a565 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f5895f3882c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f5895f400f4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f5893c649a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f589577d43f in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#18 0x00007f589577e07d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#19 0x00007f58957552eb in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#20 0x00007f58885231c0 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#21 0x00007f588db62287 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f588db624c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f588db6254c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f5893cbd8ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f5893c629ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f5893c6ba84 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x000055cfa306d0e8 in  ()
#28 0x00007f589327cb97 in __libc_start_main (main=0x55cfa306c810, argc=1, argv=0x7ffc7abca7a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc7abca798) at ../csu/libc-start.c:310
#29 0x000055cfa306d36a in _start ()

Reported using DrKonqi