SUMMARY


STEPS TO REPRODUCE
1. Login to a KDE session.

OBSERVED RESULT
Plasma crashes after login and when restarting with plasmashell.
The debug logs below are for an existing user, but I verified that it happens for a new user as well.

ADDITIONAL INFORMATION

Debug trace

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 0x7f1422a06880 (LWP 12046))]

Thread 16 (Thread 0x7f135e21b700 (LWP 12585)):
#0  0x00007f141c53f14c in QMutex::lock() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f141c774ccc in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f1415c95b28 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1415c964fb in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1415c966dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f141c774dcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f141c71603a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f141c53d4ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f135f448197 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#9  0x00007f141c53ec72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f14190516db in start_thread (arg=0x7f135e21b700) at pthread_create.c:463
#11 0x00007f141be3e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f1371086700 (LWP 12435)):
#0  0x00007f1415cdc664 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f1415c964ee in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1415c966dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f141c774dcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f141c71603a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f141c53d4ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f141c53ec72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f14190516db in start_thread (arg=0x7f1371086700) at pthread_create.c:463
#8  0x00007f141be3e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f1391bf5700 (LWP 12195)):
#0  0x00007f14190579f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b81d10d660) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f14190579f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55b81d10d610, cond=0x55b81d10d638) at pthread_cond_wait.c:502
#2  0x00007f14190579f3 in __pthread_cond_wait (cond=0x55b81d10d638, mutex=0x55b81d10d610) at pthread_cond_wait.c:655
#3  0x00007f141c545dbb in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f141c5460c9 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f14208956f8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f1420895b2a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f141c53ec72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f14190516db in start_thread (arg=0x7f1391bf5700) at pthread_create.c:463
#9  0x00007f141be3e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f13923f6700 (LWP 12177)):
#0  0x00007f1415cdc664 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f1415c95fd9 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1415c96570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1415c966dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f141c774dcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f141c71603a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f141c53d4ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f142080f926 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f141c53ec72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f14190516db in start_thread (arg=0x7f13923f6700) at pthread_create.c:463
#10 0x00007f141be3e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f1392bf7700 (LWP 12176)):
#0  0x00007f141be31bf9 in __GI___poll (fds=0x55b81d0b4120, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f1415c965c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1415c966dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f141c774dcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f141c71603a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f141c53d4ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f141c53ec72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f14190516db in start_thread (arg=0x7f1392bf7700) at pthread_create.c:463
#8  0x00007f141be3e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f13933f8700 (LWP 12173)):
#0  0x00007f1415cdc664 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f1415c95b18 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1415c964fb in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1415c966dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f141c774dcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f141c71603a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f141c53d4ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f141c53ec72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f14190516db in start_thread (arg=0x7f13933f8700) at pthread_create.c:463
#9  0x00007f141be3e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f13a21fc700 (LWP 12137)):
#0  0x00007f141be2d0b4 in __GI___libc_read (fd=17, buf=0x7f13a21fbb10, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f1415cdb2d0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1415c960b7 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1415c96570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1415c966dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f141c774dcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f141c71603a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f141c53d4ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f141c53ec72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f14190516db in start_thread (arg=0x7f13a21fc700) at pthread_create.c:463
#10 0x00007f141be3e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f13a29fd700 (LWP 12136)):
#0  0x00007f14190579f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f13e47c0058) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f14190579f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f13e47c0008, cond=0x7f13e47c0030) at pthread_cond_wait.c:502
#2  0x00007f14190579f3 in __pthread_cond_wait (cond=0x7f13e47c0030, mutex=0x7f13e47c0008) at pthread_cond_wait.c:655
#3  0x00007f141c1c586c in std::condition_variable::wait(std::unique_lock<std::mutex>&) () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007f13e9ec7c97 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#5  0x00007f13ea62199c in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#6  0x00007f13ea62343c in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#7  0x00007f13e9eca508 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#8  0x00007f13e9eee8aa in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#9  0x00007f14190516db in start_thread (arg=0x7f13a29fd700) at pthread_create.c:463
#10 0x00007f141be3e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f13a31fe700 (LWP 12135)):
#0  0x00007f141be2d0b4 in __GI___libc_read (fd=16, buf=0x7f13a31fdb10, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f1415cdb2d0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1415c960b7 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1415c96570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1415c966dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f141c774dcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f141c71603a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f141c53d4ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f141c53ec72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f14190516db in start_thread (arg=0x7f13a31fe700) at pthread_create.c:463
#10 0x00007f141be3e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f13a39ff700 (LWP 12134)):
#0  0x00007f141be31bf9 in __GI___poll (fds=0x7f139c003ce0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f1415c965c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1415c966dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f141c774dcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f141c71603a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f141c53d4ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f141c53ec72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f14190516db in start_thread (arg=0x7f13a39ff700) at pthread_create.c:463
#8  0x00007f141be3e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f13e500e700 (LWP 12125)):
#0  0x00007f14190579f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f13ec046134) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f14190579f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f13f80ae5a0, cond=0x7f13ec046108) at pthread_cond_wait.c:502
#2  0x00007f14190579f3 in __pthread_cond_wait (cond=0x7f13ec046108, mutex=0x7f13f80ae5a0) at pthread_cond_wait.c:655
#3  0x00007f141c1c586c in std::condition_variable::wait(std::unique_lock<std::mutex>&) () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007f13eb3861e7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#5  0x00007f13eb386329 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#6  0x00007f141c1cb66f in  () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#7  0x00007f14190516db in start_thread (arg=0x7f13e500e700) at pthread_create.c:463
#8  0x00007f141be3e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f13f7067700 (LWP 12121)):
#0  0x00007f14190579f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b81d41bb58) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f14190579f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55b81d41bb08, cond=0x55b81d41bb30) at pthread_cond_wait.c:502
#2  0x00007f14190579f3 in __pthread_cond_wait (cond=0x55b81d41bb30, mutex=0x55b81d41bb08) at pthread_cond_wait.c:655
#3  0x00007f13f74d231a in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f13f74d2047 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f14190516db in start_thread (arg=0x7f13f7067700) at pthread_create.c:463
#6  0x00007f141be3e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f14059b8700 (LWP 12118)):
#0  0x00007f141be2d0b4 in __GI___libc_read (fd=10, buf=0x7f14059b7af0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f1415cdb2d0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1415c960b7 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1415c96570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1415c966dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f141c774dcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f141c71603a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f141c53d4ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f142034a115 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f141c53ec72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f14190516db in start_thread (arg=0x7f14059b8700) at pthread_create.c:463
#11 0x00007f141be3e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f14073fc700 (LWP 12100)):
#0  0x00007f141be31bf9 in __GI___poll (fds=0x7f140001c470, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f1415c965c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1415c966dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f141c774dcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f141c71603a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f141c53d4ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f141d820015 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f141c53ec72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f14190516db in start_thread (arg=0x7f14073fc700) at pthread_create.c:463
#9  0x00007f141be3e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f140d640700 (LWP 12070)):
#0  0x00007f141be31bf9 in __GI___poll (fds=0x7f140d63fc28, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f1421467747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f142146936a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f140f9e9578 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f141c53ec72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f14190516db in start_thread (arg=0x7f140d640700) at pthread_create.c:463
#6  0x00007f141be3e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f1422a06880 (LWP 12046)):
[KCrash Handler]
#6  0x00007f135f467c80 in JobModel::updateJob(int, KCupsJob const&) () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007f135f469e68 in JobModel::insertJob(int, KCupsJob const&) () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007f135f46a46b in JobModel::getJobFinished(KCupsRequest*) () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#9  0x00007f141c7483e2 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f141e07765c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f141e07eb90 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f141c717d18 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f141c71a8d7 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f141c775793 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f1415c96417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007f1415c96650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f1415c966dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f141c774daf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f141c71603a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f141c71f170 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x000055b81c995f3f in  ()
#22 0x00007f141bd3eb97 in __libc_start_main (main=0x55b81c9953d0, argc=1, argv=0x7ffd7abcad08, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd7abcacf8) at ../csu/libc-start.c:310
#23 0x000055b81c9963ca in _start ()


Command line output

org.kde.plasmaquick: Applet preload policy set to 1

WARNING: This project is using the experimental QML API extensions for QtWebKit and is therefore tied to a specific QtWebKit release.
WARNING: The experimental API will change from version to version, or even be removed. You have been warned!

file:///usr/share/plasma/wallpapers/org.kde.image/contents/ui/main.qml:71:9: Unable to assign [undefined] to QStringList
file:///usr/share/plasma/wallpapers/org.kde.image/contents/ui/main.qml:71:9: Unable to assign [undefined] to QStringList
trying to show an empty dialog
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "height"
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:146:19: QML Loader: Binding loop detected for property "height"
Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
file:///usr/share/plasma/plasmoids/org.kde.plasma.systemloadviewer/contents/ui/SystemLoadViewer.qml:251: TypeError: Cannot read property 'value' of undefined
file:///usr/share/plasma/plasmoids/org.kde.plasma.systemloadviewer/contents/ui/SystemLoadViewer.qml:251: TypeError: Cannot read property 'value' of undefined
qml: Reading resources from configuration: [{"alias":"CPU","childSourceObjects":{"acpi/Thermal_Zone/0-acpitz/Temperature":{"temperature":0},"acpi/Thermal_Zone/1-x86_pkg_temp/Temperature":{"temperature":0},"lmsensors/acpitz-virtual-0/temp1":{"temperature":0},"lmsensors/coretemp-isa-0000/Core_0":{"temperature":0},"lmsensors/coretemp-isa-0000/Core_1":{"temperature":0},"lmsensors/coretemp-isa-0000/Package_id_0":{"temperature":0},"udisks/HL_DT_ST_DVDRAM_GT50N_M34C4AG5543":{"temperature":0},"udisks/KINGSTON_SMS200S360G_50026B7268006074":{"temperature":0},"udisks/ST320LT007_9ZV142_W0Q4FQRR":{"temperature":0}},"meltdownTemperature":90,"overrideLimitTemperatures":false,"sourceName":"lmsensors/coretemp-isa-0000/Package_id_0","virtual":false,"warningTemperature":70},{"alias":"HDD","childSourceObjects":{"acpi/Thermal_Zone/0-acpitz/Temperature":{"temperature":0},"acpi/Thermal_Zone/1-x86_pkg_temp/Temperature":{"temperature":0},"lmsensors/acpitz-virtual-0/temp1":{"temperature":0},"lmsensors/coretemp-isa-0000/Core_0":{"temperature":0},"lmsensors/coretemp-isa-0000/Core_1":{"temperature":0},"lmsensors/coretemp-isa-0000/Package_id_0":{"temperature":0},"udisks/HL_DT_ST_DVDRAM_GT50N_M34C4AG5543":{"temperature":0},"udisks/KINGSTON_SMS200S360G_50026B7268006074":{"temperature":0},"udisks/ST320LT007_9ZV142_W0Q4FQRR":{"temperature":0}},"meltdownTemperature":90,"overrideLimitTemperatures":false,"sourceName":"udisks/ST320LT007_9ZV142_W0Q4FQRR","virtual":false,"warningTemperature":70},{"alias":"SD","childSourceObjects":{"acpi/Thermal_Zone/0-acpitz/Temperature":{"temperature":0},"acpi/Thermal_Zone/1-x86_pkg_temp/Temperature":{"temperature":0},"lmsensors/acpitz-virtual-0/temp1":{"temperature":0},"lmsensors/coretemp-isa-0000/Core_0":{"temperature":0},"lmsensors/coretemp-isa-0000/Core_1":{"temperature":0},"lmsensors/coretemp-isa-0000/Package_id_0":{"temperature":0},"udisks/HL_DT_ST_DVDRAM_GT50N_M34C4AG5543":{"temperature":0},"udisks/KINGSTON_SMS200S360G_50026B7268006074":{"temperature":0},"udisks/ST320LT007_9ZV142_W0Q4FQRR":{"temperature":0}},"meltdownTemperature":90,"overrideLimitTemperatures":false,"sourceName":"udisks/KINGSTON_SMS200S360G_50026B7268006074","virtual":false,"warningTemperature":70}]
Trying to use rootObject before initialization is completed, whilst using setInitializationDelayed. Forcing completion
qml: onLoaded
Loading Calendar plugin HolidaysEventsPlugin(0x55c8014e1f00)
Loading Calendar plugin PimEventsPlugin(0x55c8015e76d0)
3
trying to show an empty dialog
trying to show an empty dialog
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
Both point size and pixel size set. Using pixel size.
trying to show an empty dialog
Trying to use rootObject before initialization is completed, whilst using setInitializationDelayed. Forcing completion
libkcups: CUPS-Get-Printers last error: 0 successful-ok
libkcups: Create-Printer-Subscriptions last error: 0 successful-ok
libkcups: Get-Jobs last error: 0 successful-ok
libkcups: Get-Jobs last error: 0 successful-ok
Plasma Shell startup completed
libkcups: 5 "CanonIR"
libkcups: 4 "EPSON_WF-2530"
libkcups: 3 "PDF"
libkcups: 9
KCrash: Attempting to start /usr/bin/plasmashell from kdeinit
sock_file=/run/user/1000/kdeinit5__0
QSocketNotifier: Invalid socket 30 and type 'Read', disabling...
QSocketNotifier: Invalid socket 37 and type 'Read', disabling...
KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = plasmashell path = /usr/bin pid = 19429
KCrash: Arguments: /usr/bin/plasmashell 
KCrash: Attempting to start /usr/lib/x86_64-linux-gnu/libexec/drkonqi from kdeinit
sock_file=/run/user/1000/kdeinit5__0
QSocketNotifier: Invalid socket 8 and type 'Read', disabling...
QSocketNotifier: Invalid socket 41 and type 'Read', disabling...
QSocketNotifier: Invalid socket 9 and type 'Read', disabling...
QSocketNotifier: Invalid socket 59 and type 'Read', disabling...