Application: plasmashell (5.12.7)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 4.15.0-43-generic x86_64
Distribution: Ubuntu 18.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Logging in to the system.
- Unusual behavior I noticed:
Logging on takes a very long time, over 1 minute (not sure if my 5400rpm drive has anything to do with it)
- Custom settings of the application:
I have some 3D desktop effects on including desktop cube and transparencies.

specs:
Kubuntu 18.04 LTS
CPU: AMD FX-6300
RAM: 6gb DDR3 1333mhz
GPU: 1gb Asus GTX 460
Asus M5A78L-M Plus Motherboard

-- 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 0x7fcebca25800 (LWP 5988))]

Thread 10 (Thread 0x7fcdd5a7e700 (LWP 6255)):
#0  0x00007fceb58259f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fcdd5a7d588) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fceb58259f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x5652d0f5cc18, cond=0x7fcdd5a7d560) at pthread_cond_wait.c:502
#2  0x00007fceb58259f3 in __pthread_cond_wait (cond=0x7fcdd5a7d560, mutex=0x5652d0f5cc18) at pthread_cond_wait.c:655
#3  0x00007fcebb01b952 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007fcebb01d06f in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#5  0x00007fcebb01d1ef in xcb_wait_for_reply64 () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#6  0x00007fcebb2766a8 in _XReply () at /usr/lib/x86_64-linux-gnu/libX11.so.6
#7  0x00007fce950a6d2b in  () at /usr/lib/x86_64-linux-gnu/libGLX_nvidia.so.0
#8  0x00007fce9503a5d5 in  () at /usr/lib/x86_64-linux-gnu/libGLX_nvidia.so.0
#9  0x00007fce0b222764 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.77
#10 0x00007fce0b2aac19 in  () at /usr/lib/x86_64-linux-gnu/libnvidia-glcore.so.390.77
#11 0x00007fce95091e9e in  () at /usr/lib/x86_64-linux-gnu/libGLX_nvidia.so.0
#12 0x00007fcea54a88f2 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#13 0x00007fceb712300a in QOpenGLContext::swapBuffers(QSurface*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#14 0x00007fceba481c03 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007fceba486ac8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007fceb66b416d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fceb581f6db in start_thread (arg=0x7fcdd5a7e700) at pthread_create.c:463
#18 0x00007fceb5fa188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fcdde95f700 (LWP 6189)):
#0  0x00007fceb5f94bf9 in __GI___poll (fds=0x7fcdd8003ce0, nfds=1, timeout=3399213) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fceb0a84539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fceb0a8464c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fceb68eb90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fceb68909ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fceb66af22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fcde12ff747 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007fceb66b416d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fceb581f6db in start_thread (arg=0x7fcdde95f700) at pthread_create.c:463
#9  0x00007fceb5fa188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fce00976700 (LWP 6156)):
#0  0x00007fceb58259f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5652d19cb5b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fceb58259f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x5652d19cb560, cond=0x5652d19cb588) at pthread_cond_wait.c:502
#2  0x00007fceb58259f3 in __pthread_cond_wait (cond=0x5652d19cb588, mutex=0x5652d19cb560) at pthread_cond_wait.c:655
#3  0x00007fceb66b559b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fceba4866a8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fceba486b0a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fceb66b416d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fceb581f6db in start_thread (arg=0x7fce00976700) at pthread_create.c:463
#8  0x00007fceb5fa188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fce01177700 (LWP 6141)):
#0  0x00007fceb5f900b4 in __GI___libc_read (fd=30, buf=0x7fce01176b20, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fceb0ac8cd0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fceb0a84027 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fceb0a844e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fceb0a8464c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fceb68eb90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fceb68909ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fceb66af22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fceba4072a6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007fceb66b416d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fceb581f6db in start_thread (arg=0x7fce01177700) at pthread_create.c:463
#11 0x00007fceb5fa188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fce95b6f700 (LWP 6121)):
#0  0x00007fceb58259f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fcebc3f0fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fceb58259f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fcebc3f0f68, cond=0x7fcebc3f0f90) at pthread_cond_wait.c:502
#2  0x00007fceb58259f3 in __pthread_cond_wait (cond=0x7fcebc3f0f90, mutex=0x7fcebc3f0f68) at pthread_cond_wait.c:655
#3  0x00007fcebc0fa5f4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007fcebc0fa639 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007fceb581f6db in start_thread (arg=0x7fce95b6f700) at pthread_create.c:463
#6  0x00007fceb5fa188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fce97fff700 (LWP 6120)):
#0  0x00007fceb5f900b4 in __GI___libc_read (fd=13, buf=0x7fce97ffeb70, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fceb0ac8cd0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fceb0a84027 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fceb0a844e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fceb0a8464c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fceb68eb90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fceb68909ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fceb66af22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fceb98586f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fceb66b416d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fceb581f6db in start_thread (arg=0x7fce97fff700) at pthread_create.c:463
#11 0x00007fceb5fa188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fce9e39f700 (LWP 6054)):
#0  0x00007ffcb5b6b979 in  ()
#1  0x00007ffcb5b6bc30 in clock_gettime ()
#2  0x00007fceb5fb0ea6 in __GI___clock_gettime (clock_id=1, tp=0x7fce9e39eaf0) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007fceb68eb221 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fceb68e9a59 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fceb68ea035 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fceb68eb67e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fceb0a83a98 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fceb0a8446b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fceb0a8464c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fceb68eb90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fceb68909ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fceb66af22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fceb98586f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007fceb66b416d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fceb581f6db in start_thread (arg=0x7fce9e39f700) at pthread_create.c:463
#16 0x00007fceb5fa188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fce9ffff700 (LWP 5995)):
#0  0x00007ffcb5b6b979 in  ()
#1  0x00007ffcb5b6bc30 in clock_gettime ()
#2  0x00007fceb5fb0ea6 in __GI___clock_gettime (clock_id=1, tp=0x7fce9fffeae0) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007fceb68eb221 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fceb68e9a59 in QTimerInfoList::updateCurrentTime() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fceb68ea035 in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fceb68eb67e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fceb0a83a98 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fceb0a8446b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fceb0a8464c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fceb68eb90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fceb68909ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fceb66af22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fceb6d6dd45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#14 0x00007fceb66b416d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fceb581f6db in start_thread (arg=0x7fce9ffff700) at pthread_create.c:463
#16 0x00007fceb5fa188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fcea64d7700 (LWP 5990)):
#0  0x00007fceb5f94bf9 in __GI___poll (fds=0x7fcea64d6ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fcebb01b747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fcebb01d36a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fcea8eaa2a9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fceb66b416d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fceb581f6db in start_thread (arg=0x7fcea64d7700) at pthread_create.c:463
#6  0x00007fceb5fa188f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fcebca25800 (LWP 5988)):
[KCrash Handler]
#6  0x00007fceba425268 in QQuickAnimatorProxyJob::sceneGraphInitialized() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fceb68c2122 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fceb78ac82c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007fceb78b40f4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007fceb68929a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fceb689511d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fceb68ec2c3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fceb0a84387 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007fceb0a845c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007fceb0a8464c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007fceb68eb8ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fceb68909ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fceb6899a84 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00005652cf4dccfa in  ()
#20 0x00007fceb5ea1b97 in __libc_start_main (main=0x5652cf4dc320, argc=1, argv=0x7ffcb5b388f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffcb5b388e8) at ../csu/libc-start.c:310
#21 0x00005652cf4dd09a in _start ()

Possible duplicates by query: bug 401319, bug 400845, bug 400525, bug 397374, bug 396782.

Reported using DrKonqi