Bug 386836

Application: plasmashell (5.11.3)

Qt Version: 5.9.2
Frameworks Version: 5.39.0
Operating System: Linux 4.13.12-2.g9151c66-default x86_64
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
- What I was doing when the application crashed:
The external VGA monitor had my main desktop, and the secondary screen was on my laptop and the VGA screen was on the wrong side of my laptop. I wanted it the other way around. I opened "System Settings". Plasma crashed and reloaded (looks like just plasmashell, system settings opened)
THe crash seems to happen reliable the first time I open system settings, but opening system settings again does not always produce a crash, however it seems to open with half on each monitor and crash about every second time I open it.

- Unusual behavior I noticed:
Wromg monitor as primary and settings not saving -
Laptop monitor that is normally identified properly under X11 shows as eDP-1-Unknown. The VGA is identified normally (VGA-1-EX60). Both show the correct resolution (1920x1080). Changing the monitors so the VGA screen matched the real position worked. Changing the primary display to the eDP-1-Unknown did not place the correct desktop on my laptop internal screen (it remained on the VGA screen), however xrandr shows WAYLAND0 as left of WAYLAND1 so x-clients at least may get the right idea, and opening konsole pops it up on the internal laptop screen. The settings do not save (logging out and back in causes the screen to be on the wrong side and also the primary is still the wrong screen). 
Compositing oddness -
When dragging the System Settings window, the panel with the pictures of the monitors does not contort with the rest of the window  with wobbly windows enabled (as it should be).
Cursors are larger.
The system seems overall more responsive than under X.
Widgets/transparency etc all seem to work.
Fonts render fine.
Also, x-clients cannot see the mouse cusror outside the client area (not sure if this is normal for Plasma).
Running up-to-date OpenSUSE Tumbleweed with base plasma from main repository (however there are some packages from the KDE Extras repo mainly regarding telephony)

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff47e019d80 (LWP 6677))]

Thread 14 (Thread 0x7ff3715ed700 (LWP 6911)):
#0  0x00007ff476f3a82d in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55855f3ae9a0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff476f3a82d in __pthread_cond_wait_common (abstime=0x0, mutex=0x55855f3ae950, cond=0x55855f3ae978) at pthread_cond_wait.c:502
#2  0x00007ff476f3a82d in __pthread_cond_wait (cond=0x55855f3ae978, mutex=0x55855f3ae950) at pthread_cond_wait.c:655
#3  0x00007ff477d81f2b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#4  0x00007ff47bacf3c8 in QSGRenderThread::processEventsAndWaitForMore() () at /usr/lib64/libQt5Quick.so.5
#5  0x00007ff47bacf7fa in QSGRenderThread::run() () at /usr/lib64/libQt5Quick.so.5
#6  0x00007ff477d80c0e in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007ff476f34558 in start_thread (arg=0x7ff3715ed700) at pthread_create.c:465
#8  0x00007ff47768543f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7ff371dee700 (LWP 6909)):
#0  0x00007ff476f3a82d in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55855dcc4a34) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff476f3a82d in __pthread_cond_wait_common (abstime=0x0, mutex=0x55855dcc49e0, cond=0x55855dcc4a08) at pthread_cond_wait.c:502
#2  0x00007ff476f3a82d in __pthread_cond_wait (cond=0x55855dcc4a08, mutex=0x55855dcc49e0) at pthread_cond_wait.c:655
#3  0x00007ff477d81f2b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#4  0x00007ff47bacf3c8 in QSGRenderThread::processEventsAndWaitForMore() () at /usr/lib64/libQt5Quick.so.5
#5  0x00007ff47bacf7fa in QSGRenderThread::run() () at /usr/lib64/libQt5Quick.so.5
#6  0x00007ff477d80c0e in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007ff476f34558 in start_thread (arg=0x7ff371dee700) at pthread_create.c:465
#8  0x00007ff47768543f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7ff3735ef700 (LWP 6908)):
#0  0x00007ff476f3a82d in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55855c619fd4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff476f3a82d in __pthread_cond_wait_common (abstime=0x0, mutex=0x55855c619f80, cond=0x55855c619fa8) at pthread_cond_wait.c:502
#2  0x00007ff476f3a82d in __pthread_cond_wait (cond=0x55855c619fa8, mutex=0x55855c619f80) at pthread_cond_wait.c:655
#3  0x00007ff477d81f2b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#4  0x00007ff47bacf3c8 in QSGRenderThread::processEventsAndWaitForMore() () at /usr/lib64/libQt5Quick.so.5
#5  0x00007ff47bacf7fa in QSGRenderThread::run() () at /usr/lib64/libQt5Quick.so.5
#6  0x00007ff477d80c0e in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007ff476f34558 in start_thread (arg=0x7ff3735ef700) at pthread_create.c:465
#8  0x00007ff47768543f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7ff37d33c700 (LWP 6907)):
#0  0x00007ff476f3a82d in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55855abf7c04) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff476f3a82d in __pthread_cond_wait_common (abstime=0x0, mutex=0x55855abf7bb0, cond=0x55855abf7bd8) at pthread_cond_wait.c:502
#2  0x00007ff476f3a82d in __pthread_cond_wait (cond=0x55855abf7bd8, mutex=0x55855abf7bb0) at pthread_cond_wait.c:655
#3  0x00007ff477d81f2b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#4  0x00007ff47bacf3c8 in QSGRenderThread::processEventsAndWaitForMore() () at /usr/lib64/libQt5Quick.so.5
#5  0x00007ff47bacf7fa in QSGRenderThread::run() () at /usr/lib64/libQt5Quick.so.5
#6  0x00007ff477d80c0e in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007ff476f34558 in start_thread (arg=0x7ff37d33c700) at pthread_create.c:465
#8  0x00007ff47768543f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7ff384a03700 (LWP 6906)):
#0  0x00007ff47767ac8b in __GI___poll (fds=0x7ff380002de0, nfds=1, timeout=3432546) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff472674149 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff47267425c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff477fa425b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007ff477f4c73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007ff477d7c1fa in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007ff385e51f67 in KCupsConnection::run() () at /usr/lib64/libkcupslib.so
#7  0x00007ff477d80c0e in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007ff476f34558 in start_thread (arg=0x7ff384a03700) at pthread_create.c:465
#9  0x00007ff47768543f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7ff3baf3a700 (LWP 6897)):
#0  0x00007ff476f3a82d in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5585587a23d0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff476f3a82d in __pthread_cond_wait_common (abstime=0x0, mutex=0x5585587a2380, cond=0x5585587a23a8) at pthread_cond_wait.c:502
#2  0x00007ff476f3a82d in __pthread_cond_wait (cond=0x5585587a23a8, mutex=0x5585587a2380) at pthread_cond_wait.c:655
#3  0x00007ff477d81f2b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#4  0x00007ff47bacf3c8 in QSGRenderThread::processEventsAndWaitForMore() () at /usr/lib64/libQt5Quick.so.5
#5  0x00007ff47bacf7fa in QSGRenderThread::run() () at /usr/lib64/libQt5Quick.so.5
#6  0x00007ff477d80c0e in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007ff476f34558 in start_thread (arg=0x7ff3baf3a700) at pthread_create.c:465
#8  0x00007ff47768543f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7ff3c0e3b700 (LWP 6896)):
#0  0x00007ff476f3a82d in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x558558873144) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff476f3a82d in __pthread_cond_wait_common (abstime=0x0, mutex=0x5585588730f0, cond=0x558558873118) at pthread_cond_wait.c:502
#2  0x00007ff476f3a82d in __pthread_cond_wait (cond=0x558558873118, mutex=0x5585588730f0) at pthread_cond_wait.c:655
#3  0x00007ff477d81f2b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#4  0x00007ff47bacf3c8 in QSGRenderThread::processEventsAndWaitForMore() () at /usr/lib64/libQt5Quick.so.5
#5  0x00007ff47bacf7fa in QSGRenderThread::run() () at /usr/lib64/libQt5Quick.so.5
#6  0x00007ff477d80c0e in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007ff476f34558 in start_thread (arg=0x7ff3c0e3b700) at pthread_create.c:465
#8  0x00007ff47768543f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7ff3c36eb700 (LWP 6892)):
#0  0x00007ff47767ac8b in __GI___poll (fds=0x7ff3bc005950, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff472674149 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff47267425c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff477fa425b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007ff477f4c73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007ff477d7c1fa in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007ff47ba53d22 in QQuickPixmapReader::run() () at /usr/lib64/libQt5Quick.so.5
#7  0x00007ff477d80c0e in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007ff476f34558 in start_thread (arg=0x7ff3c36eb700) at pthread_create.c:465
#9  0x00007ff47768543f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7ff3c925f700 (LWP 6891)):
#0  0x00007ff4726b9714 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007ff472673b49 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff4726740f0 in  () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff47267425c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#4  0x00007ff477fa425b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007ff477f4c73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007ff477d7c1fa in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#7  0x00007ff477d80c0e in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007ff476f34558 in start_thread (arg=0x7ff3c925f700) at pthread_create.c:465
#9  0x00007ff47768543f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7ff455aa7700 (LWP 6880)):
#0  0x00007ff476f3a82d in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff47da18fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff476f3a82d in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff47da18f68, cond=0x7ff47da18f90) at pthread_cond_wait.c:502
#2  0x00007ff476f3a82d in __pthread_cond_wait (cond=0x7ff47da18f90, mutex=0x7ff47da18f68) at pthread_cond_wait.c:655
#3  0x00007ff47d723554 in  () at /usr/lib64/libQt5Script.so.5
#4  0x00007ff47d723599 in  () at /usr/lib64/libQt5Script.so.5
#5  0x00007ff476f34558 in start_thread (arg=0x7ff455aa7700) at pthread_create.c:465
#6  0x00007ff47768543f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7ff464af1700 (LWP 6800)):
#0  0x00007ffe2619c979 in  ()
#1  0x00007ffe2619cc30 in clock_gettime ()
#2  0x00007ff477692d26 in __GI___clock_gettime (clock_id=1, tp=0x7ff464af0a50) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007ff477fa3c71 in  () at /usr/lib64/libQt5Core.so.5
#4  0x00007ff477fa2549 in QTimerInfoList::updateCurrentTime() () at /usr/lib64/libQt5Core.so.5
#5  0x00007ff477fa2ac5 in QTimerInfoList::timerWait(timespec&) () at /usr/lib64/libQt5Core.so.5
#6  0x00007ff477fa400e in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007ff472673688 in g_main_context_prepare () at /usr/lib64/libglib-2.0.so.0
#8  0x00007ff47267407b in  () at /usr/lib64/libglib-2.0.so.0
#9  0x00007ff47267425c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#10 0x00007ff477fa425b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#11 0x00007ff477f4c73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#12 0x00007ff477d7c1fa in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#13 0x00007ff47aeb2b05 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#14 0x00007ff477d80c0e in  () at /usr/lib64/libQt5Core.so.5
#15 0x00007ff476f34558 in start_thread (arg=0x7ff464af1700) at pthread_create.c:465
#16 0x00007ff47768543f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7ff46673f700 (LWP 6793)):
#0  0x00007ff4726b9714 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007ff47267413e in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff47267425c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff477fa425b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007ff477f4c73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007ff477d7c1fa in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007ff47aeb2b05 in QQmlThreadPrivate::run() () at /usr/lib64/libQt5Qml.so.5
#7  0x00007ff477d80c0e in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007ff476f34558 in start_thread (arg=0x7ff46673f700) at pthread_create.c:465
#9  0x00007ff47768543f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7ff468175700 (LWP 6769)):
#0  0x00007ff47767ac8b in __GI___poll (fds=0x7ff460002de0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff472674149 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff47267425c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff477fa425b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007ff477f4c73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007ff477d7c1fa in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007ff478423a45 in  () at /usr/lib64/libQt5DBus.so.5
#7  0x00007ff477d80c0e in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007ff476f34558 in start_thread (arg=0x7ff468175700) at pthread_create.c:465
#9  0x00007ff47768543f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7ff47e019d80 (LWP 6677)):
[KCrash Handler]
#6  0x00007ff4775c30d0 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#7  0x00007ff4775c46b1 in __GI_abort () at abort.c:79
#8  0x00007ff47657e0bf in  ()
#9  0x00007ff47657a17d in wl_proxy_marshal_array_constructor_versioned () at /usr/lib64/libwayland-client.so.0
#10 0x00007ff47657a28c in wl_proxy_marshal () at /usr/lib64/libwayland-client.so.0
#11 0x00007ff46a872c78 in QtWaylandClient::QWaylandWlShellSurface::updateTransientParent(QWindow*) () at /usr/lib64/libQt5WaylandClient.so.5
#12 0x00007ff46a8707b3 in QtWaylandClient::QWaylandWindow::initWindow() () at /usr/lib64/libQt5WaylandClient.so.5
#13 0x00007ff46a870d8a in QtWaylandClient::QWaylandWindow::setVisible(bool) () at /usr/lib64/libQt5WaylandClient.so.5
#14 0x00007ff3d4fa0df4 in  () at /usr/lib64/qt5/plugins/wayland-graphics-integration-client/libwayland-egl.so
#15 0x00007ff4787a7edd in QWindow::setVisible(bool) () at /usr/lib64/libQt5Gui.so.5
#16 0x00007ff47da5355d in PlasmaQuick::Dialog::setVisible(bool) () at /usr/lib64/libKF5PlasmaQuick.so.5
#17 0x00007ff3d13e8bdf in  () at /usr/lib64/qt5/qml/org/kde/plasma/core/libcorebindingsplugin.so
#18 0x00007ff477f7b73c in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#19 0x00007ff477f87a87 in QTimer::timeout(QTimer::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#20 0x00007ff477f87db8 in QTimer::timerEvent(QTimerEvent*) () at /usr/lib64/libQt5Core.so.5
#21 0x00007ff477f7bfdb in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#22 0x00007ff478f52afc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#23 0x00007ff478f59eb4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#24 0x00007ff477f4e128 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#25 0x00007ff477fa37ee in QTimerInfoList::activateTimers() () at /usr/lib64/libQt5Core.so.5
#26 0x00007ff477fa3f01 in  () at /usr/lib64/libQt5Core.so.5
#27 0x00007ff472673f97 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#28 0x00007ff4726741d0 in  () at /usr/lib64/libglib-2.0.so.0
#29 0x00007ff47267425c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#30 0x00007ff477fa423f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#31 0x00007ff477f4c73a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#32 0x00007ff477f54fc4 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#33 0x0000558555c95f0c in  ()
#34 0x00007ff4775adf4a in __libc_start_main (main=0x558555c95500, argc=1, argv=0x7ffe26176668, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe26176658) at ../csu/libc-start.c:308
#35 0x0000558555c962aa in _start ()

Reported using DrKonqi