Application: ksmserver-logout-greeter (ksmserver-logout-greeter), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fe03e6b9900 (LWP 2878))]

Thread 3 (Thread 0x7fe03a495700 (LWP 2880)):
#0  0x00007fe04c988b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fe04736138c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe04736149c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe04d2b037b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe04d258ffa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe04d0819e4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe050167515 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fe04d086808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fe0478826ba in start_thread (arg=0x7fe03a495700) at pthread_create.c:333
#9  0x00007fe04c99482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fe03bc08700 (LWP 2879)):
#0  0x00007fe04c988b5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fe0482edc62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fe0482ef8d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fe03e169d29 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fe04d086808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe0478826ba in start_thread (arg=0x7fe03bc08700) at pthread_create.c:333
#6  0x00007fe04c99482d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fe03e6b9900 (LWP 2878)):
[KCrash Handler]
#6  0x00007fe04c8c3428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
#7  0x00007fe04c8c502a in __GI_abort () at abort.c:89
#8  0x00007fe04d06df41 in QMessageLogger::fatal(char const*, ...) const () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fe050207cd9 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#10 0x00007fe05020592b in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#11 0x00007fe03e170781 in QXcbIntegration::createPlatformOpenGLContext(QOpenGLContext*) const () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#12 0x00007fe04d5e84ad in QOpenGLContext::create() () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007fe050208505 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#14 0x00007fe0502086e1 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#15 0x00007fe04ecec0fb in QSGRenderLoop::instance() () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007fe04ed1f015 in QQuickWindowPrivate::init(QQuickWindow*, QQuickRenderControl*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x00007fe04edcbcad in QQuickView::QQuickView(QWindow*) () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#18 0x00000000004071e0 in ?? ()
#19 0x00000000004060e2 in ?? ()
#20 0x00000000004063d1 in ?? ()
#21 0x00000000004059ed in ?? ()
#22 0x00007fe04c8ae830 in __libc_start_main (main=0x405650, argc=6, argv=0x7ffd10400eb8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd10400ea8) at ../csu/libc-start.c:291
#23 0x0000000000405b49 in _start ()