Bug 415492

Summary: Plasma crashes after login with any user
Product: [Plasma] plasmashell Reporter: acc.mailr
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED FIXED    
Severity: crash CC: anolir, plasma-bugs
Priority: NOR Keywords: drkonqi
Version: 5.17.4   
Target Milestone: 1.0   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed In: 5.66

Description acc.mailr 2019-12-23 17:04:19 UTC
Application: plasmashell (5.17.4)

Qt Version: 5.14.0
Frameworks Version: 5.65.0
Operating System: Linux 5.4.6-arch1-1 x86_64
Distribution: "Arch Linux"

-- Information about the crash:
- What I was doing when the application crashed:
Eating ramen, got a few black screens and flickering then screen went black with cursor still working, GNOME works fine on the same kernel
- Unusual behavior I noticed:
Happened after the latest update, nothing else

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff3f93dfcc0 (LWP 1225))]

Thread 26 (Thread 0x7ff377fff700 (LWP 1516)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3fda68cc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007ff3fda68da2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007ff3ff7d418b in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007ff3ff7d441b in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007ff3fda62fd6 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 25 (Thread 0x7ff384df8700 (LWP 1515)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 24 (Thread 0x7ff3998f3700 (LWP 1480)):
#0  0x00007ff3fbef5479 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007ff3fbf450e9 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff3fbf451f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff3fdc95cdc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007ff3fdc3c39c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff3fda61e62 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007ff3ff70ee9b in  () at /usr/lib/libQt5Quick.so.5
#7  0x00007ff3fda62fd6 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 23 (Thread 0x7ff39a173700 (LWP 1478)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3fda68cc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007ff3fda68da2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007ff3ff7d418b in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007ff3ff7d441b in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007ff3fda62fd6 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 22 (Thread 0x7ff39a975700 (LWP 1477)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 21 (Thread 0x7ff39bc21700 (LWP 1476)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3fda68cc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007ff3fda68da2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007ff3ff7d418b in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007ff3ff7d441b in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007ff3fda62fd6 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 20 (Thread 0x7ff3aebfd700 (LWP 1475)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 19 (Thread 0x7ff3af7fe700 (LWP 1444)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 18 (Thread 0x7ff3affff700 (LWP 1443)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 17 (Thread 0x7ff3dc9bb700 (LWP 1442)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 16 (Thread 0x7ff3dd1bc700 (LWP 1441)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 15 (Thread 0x7ff3dd9bd700 (LWP 1440)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 14 (Thread 0x7ff3de1be700 (LWP 1439)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 13 (Thread 0x7ff3de9bf700 (LWP 1438)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 12 (Thread 0x7ff3df1c0700 (LWP 1437)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7ff3e8976700 (LWP 1436)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7ff3e9177700 (LWP 1435)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7ff3e9978700 (LWP 1434)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7ff3ea179700 (LWP 1433)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7ff3ea97a700 (LWP 1432)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7ff3f0818700 (LWP 1431)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7ff3f116e700 (LWP 1430)):
#0  0x00007ff3fcea9c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff3eb275a5c in  () at /usr/lib/dri/radeonsi_dri.so
#2  0x00007ff3eb275658 in  () at /usr/lib/dri/radeonsi_dri.so
#3  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7ff3f2a78700 (LWP 1373)):
#0  0x00007ff3fd6da9ef in poll () at /usr/lib/libc.so.6
#1  0x00007ff3fbf45120 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff3fbf451f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff3fdc95cdc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007ff3fdc3c39c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff3fda61e62 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007ff3ff46b249 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007ff3fda62fd6 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7ff3f3cc5700 (LWP 1244)):
#0  0x00007ff3fd6da9ef in poll () at /usr/lib/libc.so.6
#1  0x00007ff3fbf45120 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff3fbf451f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff3fdc95cdc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007ff3fdc3c39c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff3fda61e62 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007ff3fe5eab28 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007ff3fda62fd6 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7ff3f88f4700 (LWP 1241)):
#0  0x00007ff3fd6da9ef in poll () at /usr/lib/libc.so.6
#1  0x00007ff3ffc17630 in  () at /usr/lib/libxcb.so.1
#2  0x00007ff3ffc192db in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007ff3f929ca01 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007ff3fda62fd6 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007ff3fcea34cf in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007ff3fd6e52d3 in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7ff3f93dfcc0 (LWP 1225)):
[KCrash Handler]
#6  0x00007ff3864b17b6 in  () at /usr/lib/qt/qml/org/kde/plasma/calendar/libcalendarplugin.so
#7  0x00007ff3864ade21 in  () at /usr/lib/qt/qml/org/kde/plasma/calendar/libcalendarplugin.so
#8  0x00007ff3864ae7eb in  () at /usr/lib/qt/qml/org/kde/plasma/calendar/libcalendarplugin.so
#9  0x00007ff3ff3a5809 in QQmlVMEMetaObject::metaCall(QObject*, QMetaObject::Call, int, void**) () at /usr/lib/libQt5Qml.so.5
#10 0x00007ff3ff2da08c in  () at /usr/lib/libQt5Qml.so.5
#11 0x00007ff3ff2db60e in QV4::QObjectWrapper::virtualResolveLookupGetter(QV4::Object const*, QV4::ExecutionEngine*, QV4::Lookup*) () at /usr/lib/libQt5Qml.so.5
#12 0x00007ff3ff2fa027 in  () at /usr/lib/libQt5Qml.so.5
#13 0x00007ff3ff2ff30f in  () at /usr/lib/libQt5Qml.so.5
#14 0x00007ff3ff290340 in QV4::Function::call(QV4::Value const*, QV4::Value const*, int, QV4::ExecutionContext const*) () at /usr/lib/libQt5Qml.so.5
#15 0x00007ff3ff421030 in QQmlJavaScriptExpression::evaluate(QV4::CallData*, bool*) () at /usr/lib/libQt5Qml.so.5
#16 0x00007ff3ff426df0 in QQmlBinding::evaluate(bool*) () at /usr/lib/libQt5Qml.so.5
#17 0x00007ff3ff42ba9a in  () at /usr/lib/libQt5Qml.so.5
#18 0x00007ff3ff4280ec in QQmlBinding::update(QFlags<QQmlPropertyData::WriteFlag>) () at /usr/lib/libQt5Qml.so.5
#19 0x00007ff3ff439aae in QQmlObjectCreator::finalize(QQmlInstantiationInterrupt&) () at /usr/lib/libQt5Qml.so.5
#20 0x00007ff3ff3c2b0b in  () at /usr/lib/libQt5Qml.so.5
#21 0x00007ff3ff3c3053 in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () at /usr/lib/libQt5Qml.so.5
#22 0x00007ff3ff3bf9e2 in QQmlComponent::create(QQmlIncubator&, QQmlContext*, QQmlContext*) () at /usr/lib/libQt5Qml.so.5
#23 0x00007ff3ffb215ac in KDeclarative::QmlObject::createObjectFromComponent(QQmlComponent*, QQmlContext*, QHash<QString, QVariant> const&) () at /usr/lib/libKF5Declarative.so.5
#24 0x00007ff40000ec9f in  () at /usr/lib/libKF5PlasmaQuick.so.5
#25 0x00007ff40000eeab in  () at /usr/lib/libKF5PlasmaQuick.so.5
#26 0x00007ff40000f3e2 in  () at /usr/lib/libKF5PlasmaQuick.so.5
#27 0x00007ff3fdc77143 in  () at /usr/lib/libQt5Core.so.5
#28 0x00007ff3fdc6b055 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#29 0x00007ff3fe85e472 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#30 0x00007ff3fe867c89 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#31 0x00007ff3fdc3d832 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#32 0x00007ff3fdc9505d in QTimerInfoList::activateTimers() () at /usr/lib/libQt5Core.so.5
#33 0x00007ff3fdc958f2 in  () at /usr/lib/libQt5Core.so.5
#34 0x00007ff3fbf4339e in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#35 0x00007ff3fbf451b1 in  () at /usr/lib/libglib-2.0.so.0
#36 0x00007ff3fbf451f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#37 0x00007ff3fdc95cc0 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#38 0x00007ff3fdc3c39c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#39 0x00007ff3fdc443a6 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#40 0x0000565276d0edc9 in  ()
#41 0x00007ff3fd60d153 in __libc_start_main () at /usr/lib/libc.so.6
#42 0x0000565276d0f22e in _start ()
[Inferior 1 (process 1225) detached]

Possible duplicates by query: bug 415459, bug 415451, bug 415445, bug 415433, bug 415423.

Reported using DrKonqi
Comment 1 David Edmundson 2019-12-23 17:24:04 UTC
*** Bug 415493 has been marked as a duplicate of this bug. ***
Comment 2 David Edmundson 2019-12-23 17:25:31 UTC
Please check your locale is set correctly

Your backtrace misses symbols, but this is probably fixed in the next framework by 6756d00fba11ca2af921a67acdb5e3c92e23bb8a in p-f
Comment 3 anolir 2019-12-24 02:44:40 UTC
(In reply to David Edmundson from comment #2)
> Please check your locale is set correctly
Yes! I deleted ~/.config/plasma-locale-settings.sh, in which the values were different from /etc/locale.conf, restarted sddm, the problem was solved. Thank you!