Created attachment 104542 [details]
List of applications related to desktop running after crash

attempt to restart kwin:
kwin: unable to claim manager selection, another wm running? (try using --replace)
Application::crashHandler() called with signal 11; recent crashes: 1
KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = kwin_x11 path = /usr/bin pid = 8944
KCrash: Arguments: /usr/bin/kwin_x11 ? 
Segmentation fault (core dumped)
dad@dad314159:~/Desktop$ QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: Permission denied
Module 'org.kde.kwin.decoration' does not contain a module identifier directive - it cannot be protected from external registrations.
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 1823, resource id: 0, major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 1824, resource id: 0, major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 1825, resource id: 0, major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 1833, resource id: 0, major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 1834, resource id: 0, major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 9 (BadDrawable), sequence: 1835, resource id: 0, major code: 14 (GetGeometry), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 53304, resource id: 96469092, major code: 15 (QueryTree), minor code: 0
=======================================================================
Odd behaviour of desktop etc.
1) init attempts to use dhcp rarp on ethernet port that is not connected (5 minute delay) the defaults, later after desktop installs, to WiFi (this works)
2) desktop fails several times to start. init eventually succeeding (after 3 minute delay)
3) Once desktop starts, Cadence and a basic file browser start on screen before desktop completes.
4) Thereafter, virtually any situation where a window is opened from inside another window, such that the new window covers the opening window, causes a kwin crash.
5) "System settings" do not apply to plasma desktop. E.g., I set double mouse click to open desktop icon, but it always remains at one click. BUT, I set a background image for the desktop and that worked (??)
6) Latest crash took image off desktop (first time) and replaced with black background. ON THIS DESKTOP ONLY DOUBLE CLICK WORKS (??)
7) I tried to send a bug report, and the bug report will not log me in, however I used Firefox login and am writing this.
=========================================================================
scrape of crash bug for backtrace:
=========================================================================
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6bd8f28940 (LWP 4936))]

Thread 6 (Thread 0x7f6b22fe6700 (LWP 6041)):
#0  0x00007ffc395fccaf in clock_gettime ()
#1  0x00007f6bd8a3bc86 in __GI___clock_gettime (clock_id=1, tp=tp@entry=0x7f6b22fe5a10) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f6bd67186c6 in qt_clock_gettime (ts=0x7f6b22fe5a10, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#5  0x00007f6bd6893f09 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f6b1c1058c8) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007f6bd689330b in QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7f6b1c105090, flags=..., flags@entry=..., timeout=timeout@entry=0x0) at kernel/qeventdispatcher_unix.cpp:171
#7  0x00007f6bd6893b22 in QEventDispatcherUNIX::processEvents (this=0x7f6b1c0635d0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#8  0x00007f6bd683effa in QEventLoop::exec (this=this@entry=0x7f6b22fe5c60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#9  0x00007f6bd66679e4 in QThread::exec (this=this@entry=0x28c2480) at thread/qthread.cpp:500
#10 0x00007f6bd185e6b5 in QQmlThreadPrivate::run (this=0x28c2480) at qml/ftw/qqmlthread.cpp:141
#11 0x00007f6bd666c808 in QThreadPrivate::start (arg=0x28c2480) at thread/qthread_unix.cpp:341
#12 0x00007f6bd26fb6ba in start_thread (arg=0x7f6b22fe6700) at pthread_create.c:333
#13 0x00007f6bd8a2d82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f6baaffe700 (LWP 5141)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6bd5a05574 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f6bd5a055b9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f6bd26fb6ba in start_thread (arg=0x7f6baaffe700) at pthread_create.c:333
#4  0x00007f6bd8a2d82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f6bb8fed700 (LWP 5135)):
#0  0x00007ffc395fccaf in clock_gettime ()
#1  0x00007f6bd8a3bc86 in __GI___clock_gettime (clock_id=1, tp=tp@entry=0x7f6bb8fecb10) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f6bd67186c6 in qt_clock_gettime (ts=0x7f6bb8fecb10, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#5  0x00007f6bd6893f09 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f6bb0001118) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007f6bd6894475 in QTimerInfoList::timerWait (this=this@entry=0x7f6bb0001118, tm=...) at kernel/qtimerinfo_unix.cpp:381
#7  0x00007f6bd6893ad2 in QEventDispatcherUNIX::processEvents (this=0x7f6bb00008c0, flags=...) at kernel/qeventdispatcher_unix.cpp:594
#8  0x00007f6bd683effa in QEventLoop::exec (this=this@entry=0x7f6bb8fecc60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#9  0x00007f6bd66679e4 in QThread::exec (this=this@entry=0x25b7590) at thread/qthread.cpp:500
#10 0x00007f6bd185e6b5 in QQmlThreadPrivate::run (this=0x25b7590) at qml/ftw/qqmlthread.cpp:141
#11 0x00007f6bd666c808 in QThreadPrivate::start (arg=0x25b7590) at thread/qthread_unix.cpp:341
#12 0x00007f6bd26fb6ba in start_thread (arg=0x7f6bb8fed700) at pthread_create.c:333
#13 0x00007f6bd8a2d82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f6bbb88d700 (LWP 4994)):
#0  0x00007f6bd8a239e3 in select () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6bd6891bcf in qt_safe_select (nfds=8, fdread=fdread@entry=0x7f6bb4000a78, fdwrite=fdwrite@entry=0x7f6bb4000d08, fdexcept=fdexcept@entry=0x7f6bb4000f98, orig_timeout=orig_timeout@entry=0x0) at kernel/qcore_unix.cpp:75
#2  0x00007f6bd689360e in QEventDispatcherUNIX::select (timeout=0x0, exceptfds=0x7f6bb4000f98, writefds=0x7f6bb4000d08, readfds=0x7f6bb4000a78, nfds=<optimized out>, this=0x7f6bb40008c0) at kernel/qeventdispatcher_unix.cpp:320
#3  QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7f6bb40008e0, flags=..., flags@entry=..., timeout=timeout@entry=0x0) at kernel/qeventdispatcher_unix.cpp:196
#4  0x00007f6bd6893b22 in QEventDispatcherUNIX::processEvents (this=0x7f6bb40008c0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#5  0x00007f6bd683effa in QEventLoop::exec (this=this@entry=0x7f6bbb88cc50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f6bd66679e4 in QThread::exec (this=this@entry=0x7f6bd9084d40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:500
#7  0x00007f6bd9011515 in QDBusConnectionManager::run (this=0x7f6bd9084d40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:189
#8  0x00007f6bd666c808 in QThreadPrivate::start (arg=0x7f6bd9084d40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:341
#9  0x00007f6bd26fb6ba in start_thread (arg=0x7f6bbb88d700) at pthread_create.c:333
#10 0x00007f6bd8a2d82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f6bc149c700 (LWP 4982)):
#0  0x00007f6bd8a21b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6bd7b86c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f6bd7b888d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f6bc2149d29 in QXcbEventReader::run (this=0x23a79a0) at qxcbconnection.cpp:1325
#4  0x00007f6bd666c808 in QThreadPrivate::start (arg=0x23a79a0) at thread/qthread_unix.cpp:341
#5  0x00007f6bd26fb6ba in start_thread (arg=0x7f6bc149c700) at pthread_create.c:333
#6  0x00007f6bd8a2d82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f6bd8f28940 (LWP 4936)):
[KCrash Handler]
#6  QV4::Value::as<QV4::QQmlValueTypeWrapper const> (this=0x7f6b21fe7320) at ../../include/QtQml/5.6.1/QtQml/private/../../../../../src/qml/jsruntime/qv4value_p.h:372
#7  QQmlBinding::write (this=this@entry=0x311b750, core=..., result=..., isUndefined=<optimized out>, flags=...) at qml/qqmlbinding.cpp:257
#8  0x00007f6bd184b53a in QQmlBinding::update (this=0x311b750, flags=...) at qml/qqmlbinding.cpp:191
#9  0x00007f6bd185484f in QQmlObjectCreator::finalize (this=0x2ada210, interrupt=...) at qml/qqmlobjectcreator.cpp:1193
#10 0x00007f6bd17e120e in QQmlComponentPrivate::complete (enginePriv=0x2aaf0b0, state=0x31cafc0) at qml/qqmlcomponent.cpp:919
#11 0x00007f6bd17e12d7 in QQmlComponentPrivate::completeCreate (this=0x31caf20) at qml/qqmlcomponent.cpp:955
#12 0x00007f6bd17e1140 in QQmlComponent::create (this=0x31cb0c0, context=0x2878950) at qml/qqmlcomponent.cpp:781
#13 0x00007f6bb900c047 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#14 0x00007f6bd862d761 in ?? () from /usr/lib/x86_64-linux-gnu/libkwin.so.5
#15 0x00007f6bd850d621 in KWin::Client::createDecoration(QRect const&) () from /usr/lib/x86_64-linux-gnu/libkwin.so.5
#16 0x00007f6bd850e213 in KWin::Client::updateDecoration(bool, bool) () from /usr/lib/x86_64-linux-gnu/libkwin.so.5
#17 0x00007f6bd856db87 in KWin::Client::manage(unsigned int, bool) () from /usr/lib/x86_64-linux-gnu/libkwin.so.5
#18 0x00007f6bd84ef3e4 in KWin::Workspace::createClient(unsigned int, bool) () from /usr/lib/x86_64-linux-gnu/libkwin.so.5
#19 0x00007f6bd855ae8f in KWin::Workspace::workspaceEvent(xcb_generic_event_t*) () from /usr/lib/x86_64-linux-gnu/libkwin.so.5
#20 0x00007f6bd683e16f in QAbstractEventDispatcher::filterNativeEvent (this=<optimized out>, eventType=..., message=message@entry=0x7f6bbc001a50, result=result@entry=0x7ffc395b0e38) at kernel/qabstracteventdispatcher.cpp:460
#21 0x00007f6bc214dca5 in QXcbConnection::handleXcbEvent (this=this@entry=0x239c0b0, event=event@entry=0x7f6bbc001a50) at qxcbconnection.cpp:1091
#22 0x00007f6bc214ec06 in QXcbConnection::processXcbEvents (this=0x239c0b0) at qxcbconnection.cpp:1723
#23 0x00007f6bd686e719 in QObject::event (this=0x239c0b0, e=<optimized out>) at kernel/qobject.cpp:1256
#24 0x00007f6bd7176afc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x239c0b0, e=0x7f6bbc005320) at kernel/qapplication.cpp:3804
#25 0x00007f6bd717c036 in QApplication::notify (this=0x7ffc395b1470, receiver=0x239c0b0, e=0x7f6bbc005320) at kernel/qapplication.cpp:3561
#26 0x00007f6bd68412a8 in QCoreApplication::notifyInternal2 (receiver=0x239c0b0, event=event@entry=0x7f6bbc005320) at kernel/qcoreapplication.cpp:1015
#27 0x00007f6bd684316a in QCoreApplication::sendEvent (event=0x7f6bbc005320, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:225
#28 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x237f630) at kernel/qcoreapplication.cpp:1650
#29 0x00007f6bd6893a02 in QEventDispatcherUNIX::processEvents (this=0x23c5b70, flags=flags@entry=...) at kernel/qeventdispatcher_unix.cpp:579
#30 0x00007f6bc21bd8fd in QUnixEventDispatcherQPA::processEvents (this=<optimized out>, flags=...) at eventdispatchers/qunixeventdispatcher.cpp:62
#31 0x00007f6bd683effa in QEventLoop::exec (this=this@entry=0x7ffc395b1360, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#32 0x00007f6bd68476bc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1285
#33 0x00007f6bd8cf9226 in kdemain () from /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#34 0x00007f6bd8947830 in __libc_start_main (main=0x400730, argc=3, argv=0x7ffc395b15f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc395b15e8) at ../csu/libc-start.c:291
#35 0x0000000000400769 in _start ()
====================================================================
NOTE: When ethernet is attached, the delay dhcp rarp on ethernet port that is not connected disappears.

Apparently two desktops are running, one over the other.
=====================================================================
KWIN let me save its' report (one above is copy and paste I did). There may be other stuff you can use:

Application: kwin_x11 (5.8.5)

Qt Version: 5.6.1
Frameworks Version: 5.28.0
Operating System: Linux 4.4.0-66-lowlatency x86_64
Distribution: Ubuntu 16.04.2 LTS

-- Information about the crash:
<In detail, tell us what you were doing  when the application crashed.>

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6bd8f28940 (LWP 4936))]

Thread 6 (Thread 0x7f6b22fe6700 (LWP 6041)):
#0  0x00007ffc395fccaf in clock_gettime ()
#1  0x00007f6bd8a3bc86 in __GI___clock_gettime (clock_id=1, tp=tp@entry=0x7f6b22fe5a10) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f6bd67186c6 in qt_clock_gettime (ts=0x7f6b22fe5a10, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#5  0x00007f6bd6893f09 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f6b1c1058c8) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007f6bd689330b in QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7f6b1c105090, flags=..., flags@entry=..., timeout=timeout@entry=0x0) at kernel/qeventdispatcher_unix.cpp:171
#7  0x00007f6bd6893b22 in QEventDispatcherUNIX::processEvents (this=0x7f6b1c0635d0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#8  0x00007f6bd683effa in QEventLoop::exec (this=this@entry=0x7f6b22fe5c60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#9  0x00007f6bd66679e4 in QThread::exec (this=this@entry=0x28c2480) at thread/qthread.cpp:500
#10 0x00007f6bd185e6b5 in QQmlThreadPrivate::run (this=0x28c2480) at qml/ftw/qqmlthread.cpp:141
#11 0x00007f6bd666c808 in QThreadPrivate::start (arg=0x28c2480) at thread/qthread_unix.cpp:341
#12 0x00007f6bd26fb6ba in start_thread (arg=0x7f6b22fe6700) at pthread_create.c:333
#13 0x00007f6bd8a2d82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f6baaffe700 (LWP 5141)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6bd5a05574 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f6bd5a055b9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f6bd26fb6ba in start_thread (arg=0x7f6baaffe700) at pthread_create.c:333
#4  0x00007f6bd8a2d82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f6bb8fed700 (LWP 5135)):
#0  0x00007ffc395fccaf in clock_gettime ()
#1  0x00007f6bd8a3bc86 in __GI___clock_gettime (clock_id=1, tp=tp@entry=0x7f6bb8fecb10) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f6bd67186c6 in qt_clock_gettime (ts=0x7f6bb8fecb10, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:156
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#5  0x00007f6bd6893f09 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f6bb0001118) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007f6bd6894475 in QTimerInfoList::timerWait (this=this@entry=0x7f6bb0001118, tm=...) at kernel/qtimerinfo_unix.cpp:381
#7  0x00007f6bd6893ad2 in QEventDispatcherUNIX::processEvents (this=0x7f6bb00008c0, flags=...) at kernel/qeventdispatcher_unix.cpp:594
#8  0x00007f6bd683effa in QEventLoop::exec (this=this@entry=0x7f6bb8fecc60, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#9  0x00007f6bd66679e4 in QThread::exec (this=this@entry=0x25b7590) at thread/qthread.cpp:500
#10 0x00007f6bd185e6b5 in QQmlThreadPrivate::run (this=0x25b7590) at qml/ftw/qqmlthread.cpp:141
#11 0x00007f6bd666c808 in QThreadPrivate::start (arg=0x25b7590) at thread/qthread_unix.cpp:341
#12 0x00007f6bd26fb6ba in start_thread (arg=0x7f6bb8fed700) at pthread_create.c:333
#13 0x00007f6bd8a2d82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f6bbb88d700 (LWP 4994)):
#0  0x00007f6bd8a239e3 in select () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6bd6891bcf in qt_safe_select (nfds=8, fdread=fdread@entry=0x7f6bb4000a78, fdwrite=fdwrite@entry=0x7f6bb4000d08, fdexcept=fdexcept@entry=0x7f6bb4000f98, orig_timeout=orig_timeout@entry=0x0) at kernel/qcore_unix.cpp:75
#2  0x00007f6bd689360e in QEventDispatcherUNIX::select (timeout=0x0, exceptfds=0x7f6bb4000f98, writefds=0x7f6bb4000d08, readfds=0x7f6bb4000a78, nfds=<optimized out>, this=0x7f6bb40008c0) at kernel/qeventdispatcher_unix.cpp:320
#3  QEventDispatcherUNIXPrivate::doSelect (this=this@entry=0x7f6bb40008e0, flags=..., flags@entry=..., timeout=timeout@entry=0x0) at kernel/qeventdispatcher_unix.cpp:196
#4  0x00007f6bd6893b22 in QEventDispatcherUNIX::processEvents (this=0x7f6bb40008c0, flags=...) at kernel/qeventdispatcher_unix.cpp:607
#5  0x00007f6bd683effa in QEventLoop::exec (this=this@entry=0x7f6bbb88cc50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f6bd66679e4 in QThread::exec (this=this@entry=0x7f6bd9084d40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:500
#7  0x00007f6bd9011515 in QDBusConnectionManager::run (this=0x7f6bd9084d40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:189
#8  0x00007f6bd666c808 in QThreadPrivate::start (arg=0x7f6bd9084d40 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:341
#9  0x00007f6bd26fb6ba in start_thread (arg=0x7f6bbb88d700) at pthread_create.c:333
#10 0x00007f6bd8a2d82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f6bc149c700 (LWP 4982)):
#0  0x00007f6bd8a21b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6bd7b86c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f6bd7b888d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f6bc2149d29 in QXcbEventReader::run (this=0x23a79a0) at qxcbconnection.cpp:1325
#4  0x00007f6bd666c808 in QThreadPrivate::start (arg=0x23a79a0) at thread/qthread_unix.cpp:341
#5  0x00007f6bd26fb6ba in start_thread (arg=0x7f6bc149c700) at pthread_create.c:333
#6  0x00007f6bd8a2d82d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f6bd8f28940 (LWP 4936)):
[KCrash Handler]
#6  QV4::Value::as<QV4::QQmlValueTypeWrapper const> (this=0x7f6b21fe7320) at ../../include/QtQml/5.6.1/QtQml/private/../../../../../src/qml/jsruntime/qv4value_p.h:372
#7  QQmlBinding::write (this=this@entry=0x311b750, core=..., result=..., isUndefined=<optimized out>, flags=...) at qml/qqmlbinding.cpp:257
#8  0x00007f6bd184b53a in QQmlBinding::update (this=0x311b750, flags=...) at qml/qqmlbinding.cpp:191
#9  0x00007f6bd185484f in QQmlObjectCreator::finalize (this=0x2ada210, interrupt=...) at qml/qqmlobjectcreator.cpp:1193
#10 0x00007f6bd17e120e in QQmlComponentPrivate::complete (enginePriv=0x2aaf0b0, state=0x31cafc0) at qml/qqmlcomponent.cpp:919
#11 0x00007f6bd17e12d7 in QQmlComponentPrivate::completeCreate (this=0x31caf20) at qml/qqmlcomponent.cpp:955
#12 0x00007f6bd17e1140 in QQmlComponent::create (this=0x31cb0c0, context=0x2878950) at qml/qqmlcomponent.cpp:781
#13 0x00007f6bb900c047 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kdecoration2/kwin5_aurorae.so
#14 0x00007f6bd862d761 in ?? () from /usr/lib/x86_64-linux-gnu/libkwin.so.5
#15 0x00007f6bd850d621 in KWin::Client::createDecoration(QRect const&) () from /usr/lib/x86_64-linux-gnu/libkwin.so.5
#16 0x00007f6bd850e213 in KWin::Client::updateDecoration(bool, bool) () from /usr/lib/x86_64-linux-gnu/libkwin.so.5
#17 0x00007f6bd856db87 in KWin::Client::manage(unsigned int, bool) () from /usr/lib/x86_64-linux-gnu/libkwin.so.5
#18 0x00007f6bd84ef3e4 in KWin::Workspace::createClient(unsigned int, bool) () from /usr/lib/x86_64-linux-gnu/libkwin.so.5
#19 0x00007f6bd855ae8f in KWin::Workspace::workspaceEvent(xcb_generic_event_t*) () from /usr/lib/x86_64-linux-gnu/libkwin.so.5
#20 0x00007f6bd683e16f in QAbstractEventDispatcher::filterNativeEvent (this=<optimized out>, eventType=..., message=message@entry=0x7f6bbc001a50, result=result@entry=0x7ffc395b0e38) at kernel/qabstracteventdispatcher.cpp:460
#21 0x00007f6bc214dca5 in QXcbConnection::handleXcbEvent (this=this@entry=0x239c0b0, event=event@entry=0x7f6bbc001a50) at qxcbconnection.cpp:1091
#22 0x00007f6bc214ec06 in QXcbConnection::processXcbEvents (this=0x239c0b0) at qxcbconnection.cpp:1723
#23 0x00007f6bd686e719 in QObject::event (this=0x239c0b0, e=<optimized out>) at kernel/qobject.cpp:1256
#24 0x00007f6bd7176afc in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x239c0b0, e=0x7f6bbc005320) at kernel/qapplication.cpp:3804
#25 0x00007f6bd717c036 in QApplication::notify (this=0x7ffc395b1470, receiver=0x239c0b0, e=0x7f6bbc005320) at kernel/qapplication.cpp:3561
#26 0x00007f6bd68412a8 in QCoreApplication::notifyInternal2 (receiver=0x239c0b0, event=event@entry=0x7f6bbc005320) at kernel/qcoreapplication.cpp:1015
#27 0x00007f6bd684316a in QCoreApplication::sendEvent (event=0x7f6bbc005320, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:225
#28 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x237f630) at kernel/qcoreapplication.cpp:1650
#29 0x00007f6bd6893a02 in QEventDispatcherUNIX::processEvents (this=0x23c5b70, flags=flags@entry=...) at kernel/qeventdispatcher_unix.cpp:579
#30 0x00007f6bc21bd8fd in QUnixEventDispatcherQPA::processEvents (this=<optimized out>, flags=...) at eventdispatchers/qunixeventdispatcher.cpp:62
#31 0x00007f6bd683effa in QEventLoop::exec (this=this@entry=0x7ffc395b1360, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#32 0x00007f6bd68476bc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1285
#33 0x00007f6bd8cf9226 in kdemain () from /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#34 0x00007f6bd8947830 in __libc_start_main (main=0x400730, argc=3, argv=0x7ffc395b15f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc395b15e8) at ../csu/libc-start.c:291
#35 0x0000000000400769 in _start ()