Application: plasmashell (5.7.1)

Qt Version: 5.7.0
Frameworks Version: 5.24.0
Operating System: Linux 4.4.0-31-generic x86_64
Distribution: Ubuntu 16.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
I plug in a second Monitor.

- Custom settings of the application:
I changed the Wallpaper and pin some starter to the Kontrollbar and changed the "start"-icon of the Kontrollbar.

Ubuntu (5.7 aka. KDE Neon User Edition 64-bit)
KDE-Plasma-Version:	5.7.1
KDE-Frameworks-Version: 	5.24.0
Qt-Version:		5.7.0
Kernel-Version:	4.4.0-31-generic
OpenGL-Version:	3.0 Mesa 11.2.0
Renderer:		Mesa DRI Intel(R) HD Graphics 5500

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f42938aa8c0 (LWP 2729))]

Thread 9 (Thread 0x7f41c10bc700 (LWP 3627)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007f428e8c2a16 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f428e8be2ca in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f428e8c1c28 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f428d9a56fa in start_thread (arg=0x7f41c10bc700) at pthread_create.c:333
#5  0x00007f428e1ceb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f41d0bed700 (LWP 2984)):
#0  0x00007f428e1c2e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f4289dcd39c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4289dcd4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f428eaed30b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f428ea97d9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f428e8bd044 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f41d30cc587 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007f428e8c1c28 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f428d9a56fa in start_thread (arg=0x7f41d0bed700) at pthread_create.c:333
#9  0x00007f428e1ceb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f41df0fb700 (LWP 2969)):
#0  0x00007f4289e11ae4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4289dcd356 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4289dcd4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f428eaed30b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f428ea97d9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f428e8bd044 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4291abcac6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f428e8c1c28 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f428d9a56fa in start_thread (arg=0x7f41df0fb700) at pthread_create.c:333
#9  0x00007f428e1ceb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f426bfff700 (LWP 2965)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f42932fc5c4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f42932fc609 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f428d9a56fa in start_thread (arg=0x7f426bfff700) at pthread_create.c:333
#4  0x00007f428e1ceb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f4276090700 (LWP 2943)):
#0  0x00007f428e1be9cd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f4289e10740 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4289dcce84 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4289dcd340 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4289dcd4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f428eaed30b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f428ea97d9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f428e8bd044 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4291139685 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f428e8c1c28 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f428d9a56fa in start_thread (arg=0x7f4276090700) at pthread_create.c:333
#11 0x00007f428e1ceb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f4277dfa700 (LWP 2891)):
#0  0x00007f428e1c2e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f4289dcd39c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4289dcd4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f428eaed30b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f428ea97d9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f428e8bd044 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4291139685 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f428e8c1c28 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f428d9a56fa in start_thread (arg=0x7f4277dfa700) at pthread_create.c:333
#9  0x00007f428e1ceb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f427d719700 (LWP 2780)):
#0  0x00007f428e8b9099 in QMutex::lock() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f428eaeca5f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f4289dcc92d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4289dcd2cb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4289dcd4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f428eaed30b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f428ea97d9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f428e8bd044 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f42939e57a5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f428e8c1c28 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f428d9a56fa in start_thread (arg=0x7f427d719700) at pthread_create.c:333
#11 0x00007f428e1ceb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f427ef95700 (LWP 2741)):
#0  0x00007f428e1c2e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f4292280c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f42922828d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f42812e8a39 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f428e8c1c28 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f428d9a56fa in start_thread (arg=0x7f427ef95700) at pthread_create.c:333
#6  0x00007f428e1ceb5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f42938aa8c0 (LWP 2729)):
[KCrash Handler]
#6  0x00007f4291fe8b30 in Plasma::Applet::actions() const () from /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#7  0x000000000043fe1f in ?? ()
#8  0x00007f428eac4f36 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f428ede1382 in QGuiApplication::screenAdded(QScreen*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#10 0x00007f428edd4639 in QPlatformIntegration::screenAdded(QPlatformScreen*, bool) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#11 0x00007f42812e8661 in QXcbConnection::createScreen(QXcbVirtualDesktop*, xcb_randr_output_change_t const&, xcb_randr_get_output_info_reply_t*) () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#12 0x00007f42812ec18b in QXcbConnection::updateScreens(xcb_randr_notify_event_t const*) () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#13 0x00007f42812ecfe3 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#14 0x00007f42812ed300 in QXcbConnection::processXcbEvents() () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#15 0x00007f428eac5ad9 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f428f38589c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f428f38d296 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f428ea99da8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f428ea9c46b in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f428eaecee3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f4289dcd1a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f4289dcd400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f4289dcd4ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f428eaed2ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f428ea97d9a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f428eaa03ac in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x000000000041c513 in ?? ()
#28 0x00007f428e0e8830 in __libc_start_main (main=0x41b9b0, argc=2, argv=0x7fff510c8cf8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff510c8ce8) at ../csu/libc-start.c:291
#29 0x000000000041c899 in _start ()

Possible duplicates by query: bug 365857.

Reported using DrKonqi