Application: plasmashell (5.10.5)

Qt Version: 5.9.1
Frameworks Version: 5.38.0
Operating System: Linux 4.13.0-17-lowlatency x86_64
Distribution: Ubuntu 17.10

-- Information about the crash:
Since I have upgraded to the kubuntu 17.10 version, plasmashell crashes several times a day.
It seems linked to something changin in the task bar, like a plasmoid modifiying its informations content.

-- 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 0x7f4f2f030900 (LWP 30722))]

Thread 17 (Thread 0x7f4de19cc700 (LWP 4020)):
#0  0x00007f4f232aa070 in g_main_context_acquire () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4f232ab025 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4f232ab27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4f28fb849b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4f28f5de3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4f28d7d3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4f2ca73846 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f4f28d8229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4f27f187fc in start_thread (arg=0x7f4de19cc700) at pthread_create.c:465
#9  0x00007f4f28684b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f4de2aa5700 (LWP 428)):
#0  0x00007f4f28673ffd in __GI___libc_read (fd=19, buf=0x7f4de2aa4aee, nbytes=10) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f4f1bfbce41 in pa_read () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-10.0.so
#2  0x00007f4f1cd969fe in pa_mainloop_prepare () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f4f1cd97470 in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f4f1cd97530 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f4f1cda5399 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f4f1bfebed8 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-10.0.so
#7  0x00007f4f27f187fc in start_thread (arg=0x7f4de2aa5700) at pthread_create.c:465
#8  0x00007f4f28684b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f4deb157700 (LWP 30760)):
#0  0x00007f4f232f05d4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4f232aa698 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4f232ab09b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4f232ab27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4f28fb849b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4f28f5de3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4f28d7d3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4df802d717 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007f4f28d8229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f4f27f187fc in start_thread (arg=0x7f4deb157700) at pthread_create.c:465
#10 0x00007f4f28684b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f4debfff700 (LWP 30753)):
#0  0x00007f4f232f05d4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4f232aa698 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4f232ab09b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4f232ab27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4f28fb849b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4f28f5de3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4f28d7d3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4f28d8229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4f27f187fc in start_thread (arg=0x7f4debfff700) at pthread_create.c:465
#9  0x00007f4f28684b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f4df9589700 (LWP 30743)):
#0  0x00007f4f232f05d4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4f232aa037 in g_main_context_acquire () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4f232ab025 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4f232ab27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4f28fb849b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4f28f5de3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4f28d7d3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4f28d8229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4f27f187fc in start_thread (arg=0x7f4df9589700) at pthread_create.c:465
#9  0x00007f4f28684b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f4df9d8a700 (LWP 30742)):
#0  0x00007f4f27f1f072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f4e60027cd4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f4f27f1f072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f4e60027c80, cond=0x7f4e60027ca8) at pthread_cond_wait.c:502
#2  0x00007f4f27f1f072 in __pthread_cond_wait (cond=0x7f4e60027ca8, mutex=0x7f4e60027c80) at pthread_cond_wait.c:655
#3  0x00007f4e40f32a9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#4  0x00007f4e40f32cf9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#5  0x00007f4e42103d21 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#6  0x00007f4f27f187fc in start_thread (arg=0x7f4df9d8a700) at pthread_create.c:465
#7  0x00007f4f28684b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f4dfa58b700 (LWP 30741)):
#0  0x00007f4f232aa891 in g_main_context_query () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4f232ab0e7 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4f232ab27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4f28fb849b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4f28f5de3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4f28d7d3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4f28d8229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4f27f187fc in start_thread (arg=0x7f4dfa58b700) at pthread_create.c:465
#8  0x00007f4f28684b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f4e3ad8e700 (LWP 30740)):
#0  0x00007f4f27f1f072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f4e42b3d540) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f4f27f1f072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f4e42b3d4f0, cond=0x7f4e42b3d518) at pthread_cond_wait.c:502
#2  0x00007f4f27f1f072 in __pthread_cond_wait (cond=0x7f4e42b3d518, mutex=0x7f4e42b3d4f0) at pthread_cond_wait.c:655
#3  0x00007f4e420cd6b4 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#4  0x00007f4e420cd6d9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#5  0x00007f4f27f187fc in start_thread (arg=0x7f4e3ad8e700) at pthread_create.c:465
#6  0x00007f4f28684b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f4e43773700 (LWP 30738)):
#0  0x00007f4f28678901 in __GI___poll (fds=0x7f4e3c002de0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f4f232ab169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4f232ab27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4f28fb849b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4f28f5de3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4f28d7d3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4f28d8229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4f27f187fc in start_thread (arg=0x7f4e43773700) at pthread_create.c:465
#8  0x00007f4f28684b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f4e68cce700 (LWP 30735)):
#0  0x00007f4f28673ffd in __GI___libc_read (fd=30, buf=0x7f4e68ccda90, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f4f232ef280 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4f232aac4b in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4f232ab110 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4f232ab27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4f28fb849b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4f28f5de3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4f28d7d3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4f28d8229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f4f27f187fc in start_thread (arg=0x7f4e68cce700) at pthread_create.c:465
#10 0x00007f4f28684b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f4e694cf700 (LWP 30734)):
[KCrash Handler]
#6  0x00007f4e6979c66c in  () at /usr/lib/x86_64-linux-gnu/libQt5XmlPatterns.so.5
#7  0x00007f4e69798394 in  () at /usr/lib/x86_64-linux-gnu/libQt5XmlPatterns.so.5
#8  0x00007f4e6977fa0b in  () at /usr/lib/x86_64-linux-gnu/libQt5XmlPatterns.so.5
#9  0x00007f4e6975ee8e in  () at /usr/lib/x86_64-linux-gnu/libQt5XmlPatterns.so.5
#10 0x00007f4e697602c2 in  () at /usr/lib/x86_64-linux-gnu/libQt5XmlPatterns.so.5
#11 0x00007f4e6961a932 in  () at /usr/lib/x86_64-linux-gnu/libQt5XmlPatterns.so.5
#12 0x00007f4e6958202a in  () at /usr/lib/x86_64-linux-gnu/libQt5XmlPatterns.so.5
#13 0x00007f4e69593f3e in QXmlQuery::setQuery(QIODevice*, QUrl const&) () at /usr/lib/x86_64-linux-gnu/libQt5XmlPatterns.so.5
#14 0x00007f4e695952aa in QXmlQuery::setQuery(QString const&, QUrl const&) () at /usr/lib/x86_64-linux-gnu/libQt5XmlPatterns.so.5
#15 0x00007f4e69acc2e6 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#16 0x00007f4e69acd715 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#17 0x00007f4e69ace306 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#18 0x00007f4e69ace35d in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#19 0x00007f4f29f6446c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007f4f29f6bd34 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f4f28f5fde8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f4f28f6255d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f4f28fb8e53 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f4f232aafb7 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f4f232ab1f0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f4f232ab27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f4f28fb847f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f4f28f5de3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f4f28d7d3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f4e69ace3c5 in  () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#31 0x00007f4f28d8229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f4f27f187fc in start_thread (arg=0x7f4e694cf700) at pthread_create.c:465
#33 0x00007f4f28684b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f4efffff700 (LWP 30731)):
#0  0x00007f4f27f1f072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f4f2ea16fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f4f27f1f072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f4f2ea16f68, cond=0x7f4f2ea16f90) at pthread_cond_wait.c:502
#2  0x00007f4f27f1f072 in __pthread_cond_wait (cond=0x7f4f2ea16f90, mutex=0x7f4f2ea16f68) at pthread_cond_wait.c:655
#3  0x00007f4f2e722bd4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f4f2e722c19 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f4f27f187fc in start_thread (arg=0x7f4efffff700) at pthread_create.c:465
#6  0x00007f4f28684b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f4f0658d700 (LWP 30730)):
#0  0x00007f4f2eea6f33 in __tls_get_addr () at ../sysdeps/x86_64/tls_get_addr.S:55
#1  0x00007f4f28d81126 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f4f28fb839a in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f4f232aa6a8 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4f232ab09b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f4f232ab27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f4f28fb849b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4f28f5de3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f4f28d7d3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f4f2beddf45 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f4f28d8229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f4f27f187fc in start_thread (arg=0x7f4f0658d700) at pthread_create.c:465
#12 0x00007f4f28684b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f4f149fa700 (LWP 30725)):
#0  0x00007f4f232a8032 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4f232aaa81 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4f232ab110 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4f232ab27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4f28fb849b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4f28f5de3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f4f28d7d3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4f2beddf45 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4f28d8229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f4f27f187fc in start_thread (arg=0x7f4f149fa700) at pthread_create.c:465
#10 0x00007f4f28684b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f4f1643f700 (LWP 30724)):
#0  0x00007f4f232f05d4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f4f232ab286 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4f28fb849b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f4f28f5de3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f4f28d7d3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4f29434e45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#6  0x00007f4f28d8229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f4f27f187fc in start_thread (arg=0x7f4f1643f700) at pthread_create.c:465
#8  0x00007f4f28684b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f4f18080700 (LWP 30723)):
#0  0x00007f4f28678901 in __GI___poll (fds=0x7f4f1807fbb8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f4f2d679747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f4f2d67b53a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f4f1a1c7f09 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f4f28d8229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f4f27f187fc in start_thread (arg=0x7f4f18080700) at pthread_create.c:465
#6  0x00007f4f28684b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f4f2f030900 (LWP 30722)):
#0  0x00007f4f27f1f072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fffe24dc9a8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f4f27f1f072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x5614ed8cea28, cond=0x7fffe24dc980) at pthread_cond_wait.c:502
#2  0x00007f4f27f1f072 in __pthread_cond_wait (cond=0x7fffe24dc980, mutex=0x5614ed8cea28) at pthread_cond_wait.c:655
#3  0x00007f4f2d679952 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007f4f2d67b23f in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#5  0x00007f4f2d67b3bf in xcb_wait_for_reply64 () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#6  0x00007f4f2d8d2a78 in _XReply () at /usr/lib/x86_64-linux-gnu/libX11.so.6
#7  0x00007f4f20262eca in XSyncQueryCounter () at /usr/lib/x86_64-linux-gnu/libXext.so.6
#8  0x00007f4df8758294 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kf5/org.kde.kidletime.platforms/KF5IdleTimeXcbPlugin0.so
#9  0x00007f4df8b77fbc in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/dataengine/plasma_engine_powermanagement.so
#10 0x00007f4f2d1f344c in  () at /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#11 0x00007f4f28f8e8e5 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f4f2d1edfe2 in Plasma::DataContainer::updateRequested(Plasma::DataContainer*) () at /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#13 0x00007f4f2d205b08 in  () at /usr/lib/x86_64-linux-gnu/libKF5Plasma.so.5
#14 0x00007f4f28f8f40b in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f4f29f6446c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f4f29f6bd34 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f4f28f5fde8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f4f28fb791e in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f4f28fb80e1 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f4f232aafb7 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f4f232ab1f0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f4f232ab27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f4f28fb847f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f4f28f5de3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f4f28f66da4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00005614ed4e6cc2 in  ()
#27 0x00007f4f285911c1 in __libc_start_main (main=0x5614ed4e6160, argc=1, argv=0x7fffe24dd518, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffe24dd508) at ../csu/libc-start.c:308
#28 0x00005614ed4e703a in _start ()

Reported using DrKonqi