Bug 398441

Application: systemsettings5 (5.12.6)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 4.15.0-33-generic x86_64
Distribution: Ubuntu 18.04.1 LTS

-- Information about the crash:
I had just start my computer, after the login screen I still had this random bug of black screen on second monitor (he's usable but I can't use/configure menu bar, widgets, etc... but krunner work)

I have start chrome, I noticed that the network is down, and so, I have open network panel with Krunner and this crash is happen

The crash does not seem to be reproducible.

-- Backtrace:
Application: Configuration du système (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fcd1ba51800 (LWP 2170))]

Thread 5 (Thread 0x7fcce668a700 (LWP 2224)):
#0  0x00007fcd17484e57 in sched_yield () at ../sysdeps/unix/syscall-template.S:78
#1  0x00007fccf5aff31b in ?? () from /usr/lib/x86_64-linux-gnu/libGLX_nvidia.so.0
#2  0x00007fccf4b4f2a6 in ?? () from /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.48
#3  0x00007fccf4a7048e in ?? () from /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.48
#4  0x00007fccf5af9cde in ?? () from /usr/lib/x86_64-linux-gnu/libGLX_nvidia.so.0
#5  0x00007fcd037de8f2 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#6  0x00007fcd1861800a in QOpenGLContext::swapBuffers(QSurface*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#7  0x00007fcd15bb5c03 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fcd15bbaac8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007fcd17bac16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fcd136496db in start_thread (arg=0x7fcce668a700) at pthread_create.c:463
#11 0x00007fcd174a288f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fccef42c700 (LWP 2202)):
#0  0x00007fcd1133ecd9 in g_mutex_lock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fcd112f89a3 in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fcd112f936b in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fcd112f954c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fcd17de390b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fcd17d889ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fcd17ba722a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fcd156f76f5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fcd17bac16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fcd136496db in start_thread (arg=0x7fccef42c700) at pthread_create.c:463
#10 0x00007fcd174a288f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fccff4a0700 (LWP 2172)):
#0  0x00007fcd17495bf9 in __GI___poll (fds=0x7fccf80134c0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fcd112f9439 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fcd112f954c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fcd17de390b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fcd17d889ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fcd17ba722a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fcd196edd45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fcd17bac16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fcd136496db in start_thread (arg=0x7fccff4a0700) at pthread_create.c:463
#9  0x00007fcd174a288f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fcd089c2700 (LWP 2171)):
#0  0x00007fcd17495bf9 in __GI___poll (fds=0x7fcd089c1ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fcd131d8747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fcd131da36a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fcd0b76f2a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fcd17bac16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fcd136496db in start_thread (arg=0x7fcd089c2700) at pthread_create.c:463
#6  0x00007fcd174a288f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fcd1ba51800 (LWP 2170)):
[KCrash Handler]
#6  0x00007fcd15b59268 in QQuickAnimatorProxyJob::sceneGraphInitialized() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fcd17dba122 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fcd18d9a82c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007fcd18da20f4 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007fcd17d8a9a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fcd17d8d11d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fcd17de42c3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fcd112f9287 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007fcd112f94c0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007fcd112f954c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007fcd17de38ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fcd17d889ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fcd17d91a84 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x0000565155aa8e44 in ?? ()
#20 0x00007fcd173a2b97 in __libc_start_main (main=0x565155aa8a40, argc=1, argv=0x7ffd503610f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd503610e8) at ../csu/libc-start.c:310
#21 0x0000565155aa8eca in _start ()

Reported using DrKonqi