Bug 421523

Summary: KDE Plasma crashes after login
Product: [Plasma] plasmashell Reporter: marco.gebhardt
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED DUPLICATE    
Severity: crash CC: aaronbottegal, auirio, kde, plasma-bugs
Priority: NOR Keywords: drkonqi
Version: 5.18.5   
Target Milestone: 1.0   
Platform: openSUSE   
OS: Linux   
Latest Commit: Version Fixed In:

Description marco.gebhardt 2020-05-14 17:29:24 UTC
Application: plasmashell (5.18.5)

Qt Version: 5.14.1
Frameworks Version: 5.70.0
Operating System: Linux 5.6.8-1-default x86_64
Windowing system: X11
Distribution: openSUSE Tumbleweed

-- Information about the crash:
- What I was doing when the application crashed:

Startet the system. After login shortly appearing of the wallpaper, icons and taskbar and then black screen with the error.
Happens every startup.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f0d80ea5800 (LWP 1778))]

Thread 18 (Thread 0x7f0d223ca700 (LWP 2260)):
#0  0x00007f0d82e864fc in read () from /lib64/libc.so.6
#1  0x00007f0d819cf37f in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f0d81987537 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f0d81987982 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f0d81987aff in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f0d83433beb in QEventDispatcherGlib::processEvents (this=0x7f0d1c000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f0d833dbb7b in QEventLoop::exec (this=this@entry=0x7f0d223c9d60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:136
#7  0x00007f0d832065ce in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:118
#8  0x00007f0d2290fe68 in KCupsConnection::run() () from /usr/lib64/libkcupslib.so
#9  0x00007f0d83207698 in QThreadPrivate::start (arg=0x560471405bb0) at thread/qthread_unix.cpp:342
#10 0x00007f0d82683efa in start_thread () from /lib64/libpthread.so.0
#11 0x00007f0d82e953bf in clone () from /lib64/libc.so.6

Thread 17 (Thread 0x7f0d3155e700 (LWP 1999)):
#0  0x00007f0d82e8aacf in poll () from /lib64/libc.so.6
#1  0x00007f0d819879de in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f0d81987aff in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f0d83433beb in QEventDispatcherGlib::processEvents (this=0x7f0d28000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f0d833dbb7b in QEventLoop::exec (this=this@entry=0x7f0d3155dda0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:136
#5  0x00007f0d832065ce in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:118
#6  0x00007f0d83207698 in QThreadPrivate::start (arg=0x5604710dc460) at thread/qthread_unix.cpp:342
#7  0x00007f0d82683efa in start_thread () from /lib64/libpthread.so.0
#8  0x00007f0d82e953bf in clone () from /lib64/libc.so.6

Thread 16 (Thread 0x7f0d50e6b700 (LWP 1950)):
#0  0x00007f0d82e864fc in read () from /lib64/libc.so.6
#1  0x00007f0d819cf37f in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f0d81987537 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f0d81987982 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f0d81987aff in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f0d83433beb in QEventDispatcherGlib::processEvents (this=0x7f0d2c000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f0d833dbb7b in QEventLoop::exec (this=this@entry=0x7f0d50e6ad60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:136
#7  0x00007f0d832065ce in QThread::exec (this=this@entry=0x7f0d740883c0) at ../../include/QtCore/../../src/corelib/global/qflags.h:118
#8  0x00007f0d84e590e6 in QQuickPixmapReader::run (this=0x7f0d740883c0) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/src/quick/util/qquickpixmapcache.cpp:987
#9  0x00007f0d83207698 in QThreadPrivate::start (arg=0x7f0d740883c0) at thread/qthread_unix.cpp:342
#10 0x00007f0d82683efa in start_thread () from /lib64/libpthread.so.0
#11 0x00007f0d82e953bf in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7f0d53fff700 (LWP 1927)):
#0  0x00007f0d8268a795 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f0d6ee9f42b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f0d6ee9ebe7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f0d82683efa in start_thread () from /lib64/libpthread.so.0
#4  0x00007f0d82e953bf in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7f0d58ff9700 (LWP 1905)):
#0  0x00007f0d8268a795 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f0d6ee9f42b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f0d6ee9ebe7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f0d82683efa in start_thread () from /lib64/libpthread.so.0
#4  0x00007f0d82e953bf in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7f0d597fa700 (LWP 1904)):
#0  0x00007f0d8268a795 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f0d6ee9f42b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f0d6ee9ebe7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f0d82683efa in start_thread () from /lib64/libpthread.so.0
#4  0x00007f0d82e953bf in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7f0d59ffb700 (LWP 1903)):
#0  0x00007f0d8268a795 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f0d6ee9f42b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f0d6ee9ebe7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f0d82683efa in start_thread () from /lib64/libpthread.so.0
#4  0x00007f0d82e953bf in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7f0d5a7fc700 (LWP 1902)):
#0  0x00007f0d8268a795 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f0d6ee9f42b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f0d6ee9ebe7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f0d82683efa in start_thread () from /lib64/libpthread.so.0
#4  0x00007f0d82e953bf in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7f0d5affd700 (LWP 1901)):
#0  0x00007f0d8268a795 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f0d6ee9f42b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f0d6ee9ebe7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f0d82683efa in start_thread () from /lib64/libpthread.so.0
#4  0x00007f0d82e953bf in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f0d52ffd700 (LWP 1900)):
#0  0x00007f0d8268a795 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f0d6ee9f42b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f0d6ee9ebe7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f0d82683efa in start_thread () from /lib64/libpthread.so.0
#4  0x00007f0d82e953bf in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f0d5b7fe700 (LWP 1899)):
#0  0x00007f0d8268a795 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f0d6ee9f42b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f0d6ee9ebe7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f0d82683efa in start_thread () from /lib64/libpthread.so.0
#4  0x00007f0d82e953bf in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f0d5bfff700 (LWP 1898)):
#0  0x00007f0d8268a795 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f0d6ee9f42b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f0d6ee9ebe7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f0d82683efa in start_thread () from /lib64/libpthread.so.0
#4  0x00007f0d82e953bf in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f0d68a1c700 (LWP 1897)):
#0  0x00007f0d8268a795 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f0d6ee9f42b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f0d6ee9ebe7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f0d82683efa in start_thread () from /lib64/libpthread.so.0
#4  0x00007f0d82e953bf in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f0d69393700 (LWP 1895)):
#0  0x00007f0d8268a795 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f0d6ee9f42b in ?? () from /usr/lib64/dri/radeonsi_dri.so
#2  0x00007f0d6ee9ebe7 in ?? () from /usr/lib64/dri/radeonsi_dri.so
#3  0x00007f0d82683efa in start_thread () from /lib64/libpthread.so.0
#4  0x00007f0d82e953bf in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f0d7cea6700 (LWP 1869)):
#0  0x00007f0d82e8aacf in poll () from /lib64/libc.so.6
#1  0x00007f0d819879de in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f0d81987aff in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f0d83433beb in QEventDispatcherGlib::processEvents (this=0x7f0d74000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f0d833dbb7b in QEventLoop::exec (this=this@entry=0x7f0d7cea5d80, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:136
#5  0x00007f0d832065ce in QThread::exec (this=this@entry=0x56046f3e34b0) at ../../include/QtCore/../../src/corelib/global/qflags.h:118
#6  0x00007f0d84ba16e5 in QQmlThreadPrivate::run (this=0x56046f3e34b0) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/src/qml/qml/ftw/qqmlthread.cpp:155
#7  0x00007f0d83207698 in QThreadPrivate::start (arg=0x56046f3e34b0) at thread/qthread_unix.cpp:342
#8  0x00007f0d82683efa in start_thread () from /lib64/libpthread.so.0
#9  0x00007f0d82e953bf in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f0d7e147700 (LWP 1792)):
#0  0x00007f0d82e8aacf in poll () from /lib64/libc.so.6
#1  0x00007f0d819879de in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f0d81987aff in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f0d83433beb in QEventDispatcherGlib::processEvents (this=0x7f0d70000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f0d833dbb7b in QEventLoop::exec (this=this@entry=0x7f0d7e146d70, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:136
#5  0x00007f0d832065ce in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:118
#6  0x00007f0d8451a507 in ?? () from /usr/lib64/libQt5DBus.so.5
#7  0x00007f0d83207698 in QThreadPrivate::start (arg=0x7f0d8459cda0) at thread/qthread_unix.cpp:342
#8  0x00007f0d82683efa in start_thread () from /lib64/libpthread.so.0
#9  0x00007f0d82e953bf in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f0d7edb9700 (LWP 1788)):
#0  0x00007f0d82e8aacf in poll () from /lib64/libc.so.6
#1  0x00007f0d85340772 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007f0d8534143a in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007f0d7efa4ab0 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f0d83207698 in QThreadPrivate::start (arg=0x56046f26baf0) at thread/qthread_unix.cpp:342
#5  0x00007f0d82683efa in start_thread () from /lib64/libpthread.so.0
#6  0x00007f0d82e953bf in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f0d80ea5800 (LWP 1778)):
[KCrash Handler]
#4  0x00007f0d84f671d3 in QVector<QQuickItemPrivate::ChangeListener>::indexOf (this=this@entry=0x56046f1fe088, t=..., from=from@entry=0) at /usr/include/qt5/QtCore/qvector.h:1008
#5  0x00007f0d84f5f27e in QVector<QQuickItemPrivate::ChangeListener>::removeOne (t=..., this=<optimized out>) at /usr/include/qt5/QtCore/qvector.h:180
#6  QQuickItemPrivate::removeItemChangeListener (this=this@entry=0x56046f1fe010, listener=listener@entry=0x56047072b7a0, types=..., types@entry=...) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/src/quick/items/qquickitem.cpp:3949
#7  0x00007f0d8509ee4b in QQuickShaderEffectSource::~QQuickShaderEffectSource (this=0x56047072b780, __in_chrg=<optimized out>) at /usr/include/qt5/QtCore/qflags.h:118
#8  0x00007f0d8509eeb9 in QQuickShaderEffectSource::~QQuickShaderEffectSource (this=0x56047072b780, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/src/quick/items/qquickshadereffectsource.cpp:203
#9  0x00007f0d532211c7 in QGfxSourceProxy::~QGfxSourceProxy (this=<optimized out>, this=<optimized out>) at qgfxsourceproxy.cpp:59
#10 0x00007f0d53227745 in QQmlPrivate::QQmlElement<QGfxSourceProxy>::~QQmlElement (this=<optimized out>, this=<optimized out>) at /usr/include/qt5/QtQml/qqmlprivate.h:109
#11 QQmlPrivate::QQmlElement<QGfxSourceProxy>::~QQmlElement (this=<optimized out>, this=<optimized out>) at /usr/include/qt5/QtQml/qqmlprivate.h:111
#12 0x00007f0d8340657e in QObjectPrivate::deleteChildren (this=0x56047086f230) at kernel/qobject.cpp:2123
#13 0x00007f0d8340fbf6 in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1107
#14 0x00007f0d84f63eaa in QQuickItem::~QQuickItem (this=0x56047086f170, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/src/quick/items/qquickitem.cpp:2443
#15 0x00007f0d84f867d5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement (this=0x56047086f170, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/include/QtQml/../../src/qml/qml/qqmlprivate.h:109
#16 QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement (this=0x56047086f170, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#17 0x00007f0d8340657e in QObjectPrivate::deleteChildren (this=0x56047086ede0) at kernel/qobject.cpp:2123
#18 0x00007f0d8340fbf6 in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1107
#19 0x00007f0d84f63eaa in QQuickItem::~QQuickItem (this=0x56047086ed20, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/src/quick/items/qquickitem.cpp:2443
#20 0x00007f0d84f867d5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement (this=0x56047086ed20, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/include/QtQml/../../src/qml/qml/qqmlprivate.h:109
#21 QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement (this=0x56047086ed20, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#22 0x00007f0d8340657e in QObjectPrivate::deleteChildren (this=0x56047086ebe0) at kernel/qobject.cpp:2123
#23 0x00007f0d8340fbf6 in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1107
#24 0x00007f0d84f63eaa in QQuickItem::~QQuickItem (this=0x560470856fd0, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/src/quick/items/qquickitem.cpp:2443
#25 0x00007f0d84f867d5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement (this=0x560470856fd0, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/include/QtQml/../../src/qml/qml/qqmlprivate.h:109
#26 QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement (this=0x560470856fd0, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#27 0x00007f0d8340657e in QObjectPrivate::deleteChildren (this=0x560470843000) at kernel/qobject.cpp:2123
#28 0x00007f0d8340fbf6 in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1107
#29 0x00007f0d84f63eaa in QQuickItem::~QQuickItem (this=0x560470842f40, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/src/quick/items/qquickitem.cpp:2443
#30 0x00007f0d84f869f5 in QQmlPrivate::QQmlElement<QQuickLoader>::~QQmlElement (this=0x560470842f40, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/include/QtQml/../../src/qml/qml/qqmlprivate.h:109
#31 QQmlPrivate::QQmlElement<QQuickLoader>::~QQmlElement (this=0x560470842f40, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#32 0x00007f0d8340657e in QObjectPrivate::deleteChildren (this=0x560470841430) at kernel/qobject.cpp:2123
#33 0x00007f0d8340fbf6 in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1107
#34 0x00007f0d84f63eaa in QQuickItem::~QQuickItem (this=0x560470841370, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/src/quick/items/qquickitem.cpp:2443
#35 0x00007f0d84f867d5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement (this=0x560470841370, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/include/QtQml/../../src/qml/qml/qqmlprivate.h:109
#36 QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement (this=0x560470841370, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#37 0x00007f0d8340657e in QObjectPrivate::deleteChildren (this=0x56047080d320) at kernel/qobject.cpp:2123
#38 0x00007f0d8340fbf6 in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1107
#39 0x00007f0d84f63eaa in QQuickItem::~QQuickItem (this=0x56047080d260, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/src/quick/items/qquickitem.cpp:2443
#40 0x00007f0d84f869f5 in QQmlPrivate::QQmlElement<QQuickLoader>::~QQmlElement (this=0x56047080d260, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/include/QtQml/../../src/qml/qml/qqmlprivate.h:109
#41 QQmlPrivate::QQmlElement<QQuickLoader>::~QQmlElement (this=0x56047080d260, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#42 0x00007f0d8340657e in QObjectPrivate::deleteChildren (this=0x56047080cad0) at kernel/qobject.cpp:2123
#43 0x00007f0d8340fbf6 in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1107
#44 0x00007f0d84f63eaa in QQuickItem::~QQuickItem (this=0x56047080ca10, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/src/quick/items/qquickitem.cpp:2443
#45 0x00007f0d84f867d5 in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement (this=0x56047080ca10, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/include/QtQml/../../src/qml/qml/qqmlprivate.h:109
#46 QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement (this=0x56047080ca10, __in_chrg=<optimized out>) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/include/QtQml/../../src/qml/qml/qqmlprivate.h:111
#47 0x00007f0d8340978f in QObject::event (this=this@entry=0x56047080ca10, e=e@entry=0x5604707b8b20) at kernel/qobject.cpp:1326
#48 0x00007f0d84f613d3 in QQuickItem::event (this=0x56047080ca10, ev=0x5604707b8b20) at /usr/src/debug/libqt5-qtdeclarative-5.14.1-1.3.x86_64/src/quick/items/qquickitem.cpp:8156
#49 0x00007f0d83f41caf in QApplicationPrivate::notify_helper (this=this@entry=0x56046f23d6d0, receiver=receiver@entry=0x56047080ca10, e=e@entry=0x5604707b8b20) at kernel/qapplication.cpp:3684
#50 0x00007f0d83f4adf0 in QApplication::notify (this=0x7fff901c28f0, receiver=0x56047080ca10, e=0x5604707b8b20) at kernel/qapplication.cpp:3430
#51 0x00007f0d833dcfe2 in QCoreApplication::notifyInternal2 (receiver=0x56047080ca10, event=0x5604707b8b20) at ../../include/QtCore/../../src/corelib/kernel/qobject.h:153
#52 0x00007f0d833df774 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x56046f2335d0) at kernel/qcoreapplication.cpp:1832
#53 0x00007f0d83434553 in postEventSourceDispatch (s=0x56046f3147b0) at kernel/qeventdispatcher_glib.cpp:277
#54 0x00007f0d819876e8 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#55 0x00007f0d81987a70 in ?? () from /usr/lib64/libglib-2.0.so.0
#56 0x00007f0d81987aff in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#57 0x00007f0d83433bce in QEventDispatcherGlib::processEvents (this=0x56046f3153f0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#58 0x00007f0d833dbb7b in QEventLoop::exec (this=this@entry=0x7fff901c2720, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:136
#59 0x00007f0d833e3952 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:118
#60 0x000056046e4a7e3c in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/plasma5-workspace-5.18.5-1.1.x86_64/shell/main.cpp:228
[Inferior 1 (process 1778) detached]

Possible duplicates by query: bug 421503, bug 421488, bug 421466, bug 421453, bug 421447.

Reported using DrKonqi
Comment 1 Aaron Bottegal 2020-05-15 00:07:50 UTC
I'm running into this now, every boot.

Operating System: Arch Linux 
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.70.0
Qt Version: 5.14.2
Kernel Version: 5.6.12-arch1-1
OS Type: 64-bit
Processors: 16 × AMD Ryzen 7 1700 Eight-Core Processor
Memory: 31.4 GiB of RAM

$glxinfo | grep OpenGL
OpenGL vendor string: X.Org
OpenGL renderer string: Radeon RX 580 Series (POLARIS10, DRM 3.36.0, 5.6.12-arch1-1, LLVM 10.0.0)
OpenGL core profile version string: 4.6 (Core Profile) Mesa 20.0.6

Not exactly sure what change triggered it. I reverted my mesa-git and kio, but didn't help.
Comment 2 Aaron Bottegal 2020-05-15 00:43:14 UTC
Nevermind, downgrading Mesa did help. I didn't notice because it turned off compositing by default. I don't think this is KDE's bug. Will report on Mesa.
Comment 3 Kai Uwe Broulik 2020-05-18 11:02:55 UTC

*** This bug has been marked as a duplicate of bug 421170 ***