Application: plasmashell (5.18.4)

Qt Version: 5.14.1
Frameworks Version: 5.69.0
Operating System: Linux 5.6.4-1-default x86_64
Windowing system: X11
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
- Unusual behavior I noticed:
Plasma crashes repeatedly (randomly). The graphics freeze, it is possible to change to another console with Strg+Fn. Have to logout with Strg+Alt+Backspace and login again. Then it works some time (sometimes serveral hours) and finaly crashes again...

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f19125d5440 (LWP 3120))]

Thread 9 (Thread 0x7f18dfd0e700 (LWP 3239)):
#0  idleTimerSourceCheck (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:220
#1  0x00007f191307eda9 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f191307f2e2 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f191307f45f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f1914b16c0b in QEventDispatcherGlib::processEvents (this=0x7f18d8000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f1914abeb9b in QEventLoop::exec (this=this@entry=0x7f18dfd0dd60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:136
#6  0x00007f19148e95ce in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:118
#7  0x00007f18ec258e48 in KCupsConnection::run() () from /usr/lib64/libkcupslib.so
#8  0x00007f19148ea698 in QThreadPrivate::start (arg=0x55d2f2131630) at thread/qthread_unix.cpp:342
#9  0x00007f1913d65efa in start_thread () from /lib64/libpthread.so.0
#10 0x00007f19145783bf in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f18eefff700 (LWP 3231)):
#0  0x00007f191307d55f in ?? () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f191307e803 in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f191307f26b in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f191307f45f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f1914b16c0b in QEventDispatcherGlib::processEvents (this=0x7f18e4000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f1914abeb9b in QEventLoop::exec (this=this@entry=0x7f18eeffed60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:136
#6  0x00007f19148e95ce in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:118
#7  0x00007f191653b0e6 in ?? () from /usr/lib64/libQt5Quick.so.5
#8  0x00007f19148ea698 in QThreadPrivate::start (arg=0x7f19040b4e20) at thread/qthread_unix.cpp:342
#9  0x00007f1913d65efa in start_thread () from /lib64/libpthread.so.0
#10 0x00007f19145783bf in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f18fe7fc700 (LWP 3228)):
#0  0x00007f1913d6c795 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f190c93f98b in ?? () from /usr/lib64/dri/i965_dri.so
#2  0x00007f190c93f807 in ?? () from /usr/lib64/dri/i965_dri.so
#3  0x00007f1913d65efa in start_thread () from /lib64/libpthread.so.0
#4  0x00007f19145783bf in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f18feffd700 (LWP 3227)):
#0  0x00007f1913d6c795 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f190c93f98b in ?? () from /usr/lib64/dri/i965_dri.so
#2  0x00007f190c93f807 in ?? () from /usr/lib64/dri/i965_dri.so
#3  0x00007f1913d65efa in start_thread () from /lib64/libpthread.so.0
#4  0x00007f19145783bf in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f18ff7fe700 (LWP 3226)):
#0  0x00007f1913d6c795 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f190c93f98b in ?? () from /usr/lib64/dri/i965_dri.so
#2  0x00007f190c93f807 in ?? () from /usr/lib64/dri/i965_dri.so
#3  0x00007f1913d65efa in start_thread () from /lib64/libpthread.so.0
#4  0x00007f19145783bf in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f18fffff700 (LWP 3225)):
#0  0x00007f1913d6c795 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f190c93f98b in ?? () from /usr/lib64/dri/i965_dri.so
#2  0x00007f190c93f807 in ?? () from /usr/lib64/dri/i965_dri.so
#3  0x00007f1913d65efa in start_thread () from /lib64/libpthread.so.0
#4  0x00007f19145783bf in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f190e684700 (LWP 3221)):
#0  0x00007f191453fcea in clock_gettime@GLIBC_2.2.5 () from /lib64/libc.so.6
#1  0x00007f1914b16511 in qt_clock_gettime (ts=0x7f190e683ae0, clock=1) at kernel/qelapsedtimer_unix.cpp:175
#2  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#3  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#4  0x00007f1914b14e29 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f1904004950) at kernel/qtimerinfo_unix.cpp:91
#5  0x00007f1914b153f5 in QTimerInfoList::timerWait (this=0x7f1904004950, tm=...) at kernel/qtimerinfo_unix.cpp:388
#6  0x00007f1914b1696e in timerSourcePrepareHelper (timeout=0x7f190e683bb4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:162
#7  timerSourcePrepare (source=<optimized out>, timeout=0x7f190e683bb4) at kernel/qeventdispatcher_glib.cpp:166
#8  0x00007f191307e8ca in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#9  0x00007f191307f26b in ?? () from /usr/lib64/libglib-2.0.so.0
#10 0x00007f191307f45f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#11 0x00007f1914b16c0b in QEventDispatcherGlib::processEvents (this=0x7f1904000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#12 0x00007f1914abeb9b in QEventLoop::exec (this=this@entry=0x7f190e683d80, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:136
#13 0x00007f19148e95ce in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:118
#14 0x00007f19162836e5 in ?? () from /usr/lib64/libQt5Qml.so.5
#15 0x00007f19148ea698 in QThreadPrivate::start (arg=0x55d2ef17bd90) at thread/qthread_unix.cpp:342
#16 0x00007f1913d65efa in start_thread () from /lib64/libpthread.so.0
#17 0x00007f19145783bf in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f190f9be700 (LWP 3132)):
#0  0x00007f19145694fc in read () from /lib64/libc.so.6
#1  0x00007f19130c621f in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f191307ee97 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f191307f2e2 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f191307f45f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f1914b16c0b in QEventDispatcherGlib::processEvents (this=0x7f1900000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f1914abeb9b in QEventLoop::exec (this=this@entry=0x7f190f9bdd70, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:136
#7  0x00007f19148e95ce in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:118
#8  0x00007f1915bfb507 in ?? () from /usr/lib64/libQt5DBus.so.5
#9  0x00007f19148ea698 in QThreadPrivate::start (arg=0x7f1915c7dda0) at thread/qthread_unix.cpp:342
#10 0x00007f1913d65efa in start_thread () from /lib64/libpthread.so.0
#11 0x00007f19145783bf in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f19125d5440 (LWP 3120)):
[KCrash Handler]
#5  0x00007f19106fd940 in QXcbConnection::getSelectionOwner (this=0x55d2eee8c6f0, atom=atom@entry=1) at qxcbconnection_basic.h:71
#6  0x00007f19106f907b in QXcbClipboard::getSelectionOwner (atom=1, this=0x55d2eef77450) at ./qxcbobject.h:53
#7  QXcbClipboard::mimeData (this=0x55d2eef77450, mode=QClipboard::Selection) at qxcbclipboard.cpp:321
#8  0x00007f18ec71da9d in Klipper::checkClipData (this=0x55d2ef18ea10, selectionMode=<optimized out>) at /usr/src/debug/plasma5-workspace-5.18.4.1-1.1.x86_64/klipper/klipper.cpp:719
#9  0x00007f1914af49fe in QtPrivate::QSlotObjectBase::call (a=0x7ffe7414d4d0, r=0x55d2ef18ea10, this=0x55d2ef1be800) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:394
#10 doActivate<false> (sender=0x55d2ef7764b0, signal_index=3, argv=0x7ffe7414d4d0) at kernel/qobject.cpp:3870
#11 0x00007f1914aef1bf in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f191543af80 <QClipboard::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe7414d4d0) at kernel/qobject.cpp:3930
#12 0x00007f191532c0de in QClipboard::changed (this=<optimized out>, _t1=<optimized out>, _t1@entry=QClipboard::Selection) at .moc/moc_qclipboard.cpp:168
#13 0x00007f1914ee659b in QClipboard::emitChanged (this=<optimized out>, mode=mode@entry=QClipboard::Selection) at kernel/qclipboard.cpp:608
#14 0x00007f1914eca3c3 in QPlatformClipboard::emitChanged (this=0x55d2eef77450, mode=QClipboard::Selection) at kernel/qplatformclipboard.cpp:125
#15 QPlatformClipboard::emitChanged (this=this@entry=0x55d2eef77450, mode=mode@entry=QClipboard::Selection) at kernel/qplatformclipboard.cpp:122
#16 0x00007f19106fa44b in QXcbClipboard::handleXFixesSelectionRequest (this=0x55d2eef77450, event=<optimized out>) at qxcbclipboard.cpp:678
#17 0x00007f19106ff8d4 in QXcbConnection::handleXcbEvent (this=this@entry=0x55d2eee8c6f0, event=event@entry=0x7f1908022610) at qxcbconnection.cpp:705
#18 0x00007f19107004e6 in QXcbConnection::processXcbEvents (this=0x55d2eee8c6f0, flags=flags@entry=...) at qxcbconnection.cpp:1029
#19 0x00007f1910728a63 in xcbSourceDispatch (source=<optimized out>) at qxcbeventdispatcher.cpp:103
#20 0x00007f191307f048 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#21 0x00007f191307f3d0 in ?? () from /usr/lib64/libglib-2.0.so.0
#22 0x00007f191307f45f in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#23 0x00007f1914b16bee in QEventDispatcherGlib::processEvents (this=0x55d2eefa4a70, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#24 0x00007f1914abeb9b in QEventLoop::exec (this=this@entry=0x7ffe7414d7e0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:136
#25 0x00007f1914ac6972 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:118
#26 0x000055d2ee3cae3c in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/plasma5-workspace-5.18.4.1-1.1.x86_64/shell/main.cpp:228
[Inferior 1 (process 3120) detached]

The reporter indicates this bug may be a duplicate of or related to bug 400701, bug 414074.

Possible duplicates by query: bug 420410, bug 416066, bug 414074, bug 408510, bug 400701.

Reported using DrKonqi