Application: plasmashell (5.4.2)
 (Compiled from sources)
Qt Version: 5.4.2
Operating System: Linux 4.2.0-27-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
- What I was doing when the application crashed:
Every time I start my computer KDE crash (2 or 3 crashed box are opened) computer
- Custom settings of the application:
none exept changing Xconfig for  dual screen

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".
pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
[Current thread is 1 (Thread 0x7fa4969c8800 (LWP 1664))]

Thread 8 (Thread 0x7fa480546700 (LWP 1671)):
#0  0x00007fa4911738dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa4951babd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fa4951bc74f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fa4830dba39 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
#4  0x00007fa4918662be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa4909556aa in start_thread (arg=0x7fa480546700) at pthread_create.c:333
#6  0x00007fa49117eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fa47dce7700 (LWP 1819)):
#0  0x00007fa4911738dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa48df201ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa48df202fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa491a9d29b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa491a4375a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa4918613d4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa494089f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa4918662be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa4909556aa in start_thread (arg=0x7fa47dce7700) at pthread_create.c:333
#9  0x00007fa49117eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fa46efe6700 (LWP 1865)):
#0  0x00007fa48df64884 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa48df2009d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa48df202fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa491a9d29b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fa491a4375a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa4918613d4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa494089f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fa4918662be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fa4909556aa in start_thread (arg=0x7fa46efe6700) at pthread_create.c:333
#9  0x00007fa49117eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fa46c973700 (LWP 1871)):
#0  0x00007fa48df64884 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa48df1fc19 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa48df20190 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa48df202fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa491a9d29b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa491a4375a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa4918613d4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa494089f85 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fa4918662be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa4909556aa in start_thread (arg=0x7fa46c973700) at pthread_create.c:333
#10 0x00007fa49117eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fa45efbc700 (LWP 1943)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa496415114 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fa496415159 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fa4909556aa in start_thread (arg=0x7fa45efbc700) at pthread_create.c:333
#4  0x00007fa49117eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fa3dc631700 (LWP 1987)):
#0  0x00007fa48df64869 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fa48df1f2c4 in g_main_context_release () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa48df201a6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa48df202fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa491a9d29b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fa491a4375a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fa4918613d4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fa494a05ef6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fa4918662be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fa4909556aa in start_thread (arg=0x7fa3dc631700) at pthread_create.c:333
#10 0x00007fa49117eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fa3db14c700 (LWP 1992)):
[KCrash Handler]
#6  __strstr_sse2_unaligned () at ../sysdeps/x86_64/multiarch/strstr-sse2-unaligned.S:40
#7  0x00007fa494a5680a in QSGRenderContext::initialize(QOpenGLContext*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fa494a79619 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007fa4918662be in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fa4909556aa in start_thread (arg=0x7fa3db14c700) at pthread_create.c:333
#11 0x00007fa49117eeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fa4969c8800 (LWP 1664)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa49186755b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fa494a7583b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#3  0x00007fa494a7832f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007fa494a7893b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fa491d707c5 in QWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#6  0x00007fa494aa8fd3 in QQuickWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x000000000043e906 in DesktopView::event (this=0x1ddc1b0, e=0x7fff781a8290) at ../../shell/desktopview.cpp:206
#8  0x00007fa492523b8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007fa492529230 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007fa491a45f1b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fa491d69336 in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#12 0x00007fa491d6a07d in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007fa491d4f5b8 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#14 0x00007fa483108250 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so
#15 0x00007fa48df1fff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007fa48df20250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007fa48df202fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007fa491a9d27f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fa491a4375a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fa491a4b2cc in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00000000004322c3 in main (argc=2, argv=<optimized out>) at ../../shell/main.cpp:176

Possible duplicates by query: bug 358964, bug 358883, bug 358297, bug 357719, bug 357182.

Reported using DrKonqi