Bug 413012

Application: systemsettings5 (5.17.0)

Qt Version: 5.13.1
Frameworks Version: 5.63.0
Operating System: Linux 5.0.0-31-generic x86_64
Distribution: KDE neon User Edition 5.17

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

Open System Settings, click on Display and Monitor, click on Compositor --> every single time I do this, I get a message that System Settings closed unexpectedly.

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f21fc228800 (LWP 3025))]

Thread 6 (Thread 0x7f21c3583700 (LWP 3031)):
#0  __libc_enable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:67
#1  0x00007f21f775f0a5 in __GI___libc_read (fd=30, buf=0x7f21c3582b70, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#2  0x00007f21f0c1c2d0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f21f0bd70b7 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f21f0bd7570 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f21f0bd76dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f21f80b69db in QEventDispatcherGlib::processEvents (this=0x7f21bc000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#7  0x00007f21f8056eaa in QEventLoop::exec (this=this@entry=0x7f21c3582d80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#8  0x00007f21f7e723ca in QThread::exec (this=this@entry=0x55be88abf480) at thread/qthread.cpp:531
#9  0x00007f21f5c15cb5 in QQmlThreadPrivate::run (this=0x55be88abf480) at qml/ftw/qqmlthread.cpp:152
#10 0x00007f21f7e73b72 in QThreadPrivate::start (arg=0x55be88abf480) at thread/qthread_unix.cpp:360
#11 0x00007f21f2f966db in start_thread (arg=0x7f21c3583700) at pthread_create.c:463
#12 0x00007f21f777088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f21ca6e3700 (LWP 3030)):
#0  0x00007f21f7763bf9 in __GI___poll (fds=0x7f21c4003ce0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f21f0bd75c9 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f21f0bd76dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f21f80b69db in QEventDispatcherGlib::processEvents (this=0x7f21c4000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f21f8056eaa in QEventLoop::exec (this=this@entry=0x7f21ca6e2d80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#5  0x00007f21f7e723ca in QThread::exec (this=this@entry=0x55be880271d0) at thread/qthread.cpp:531
#6  0x00007f21f5c15cb5 in QQmlThreadPrivate::run (this=0x55be880271d0) at qml/ftw/qqmlthread.cpp:152
#7  0x00007f21f7e73b72 in QThreadPrivate::start (arg=0x55be880271d0) at thread/qthread_unix.cpp:360
#8  0x00007f21f2f966db in start_thread (arg=0x7f21ca6e3700) at pthread_create.c:463
#9  0x00007f21f777088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f21d3583700 (LWP 3029)):
#0  0x00007f21f775f0b4 in __GI___libc_read (fd=12, buf=0x7f21d3582b70, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f21f0c1c2d0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f21f0bd70b7 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f21f0bd7570 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f21f0bd76dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f21f80b69db in QEventDispatcherGlib::processEvents (this=0x7f21cc000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f21f8056eaa in QEventLoop::exec (this=this@entry=0x7f21d3582d80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#7  0x00007f21f7e723ca in QThread::exec (this=this@entry=0x55be87e1b7c0) at thread/qthread.cpp:531
#8  0x00007f21f5c15cb5 in QQmlThreadPrivate::run (this=0x55be87e1b7c0) at qml/ftw/qqmlthread.cpp:152
#9  0x00007f21f7e73b72 in QThreadPrivate::start (arg=0x55be87e1b7c0) at thread/qthread_unix.cpp:360
#10 0x00007f21f2f966db in start_thread (arg=0x7f21d3583700) at pthread_create.c:463
#11 0x00007f21f777088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f21e0915700 (LWP 3027)):
#0  0x00007f21f775f0b4 in __GI___libc_read (fd=7, buf=0x7f21e0914b60, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f21f0c1c2d0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f21f0bd70b7 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f21f0bd7570 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f21f0bd76dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f21f80b69db in QEventDispatcherGlib::processEvents (this=0x7f21dc000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f21f8056eaa in QEventLoop::exec (this=this@entry=0x7f21e0914d70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#7  0x00007f21f7e723ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#8  0x00007f21f852d0e5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f21f7e73b72 in QThreadPrivate::start (arg=0x7f21f87a4d80) at thread/qthread_unix.cpp:360
#10 0x00007f21f2f966db in start_thread (arg=0x7f21e0915700) at pthread_create.c:463
#11 0x00007f21f777088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f21e898f700 (LWP 3026)):
#0  0x00007f21f7763bf9 in __GI___poll (fds=0x7f21e898eca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f21f2b5a747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f21f2b5c36a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f21eb774f00 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f21f7e73b72 in QThreadPrivate::start (arg=0x55be87abc270) at thread/qthread_unix.cpp:360
#5  0x00007f21f2f966db in start_thread (arg=0x7f21e898f700) at pthread_create.c:463
#6  0x00007f21f777088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f21fc228800 (LWP 3025)):
[KCrash Handler]
#6  QQuickWindowPrivate::dirtyItem (this=0x55be80000007) at items/qquickwindow.cpp:1158
#7  0x00007f21f61a4d65 in QQuickItemPrivate::dirty (this=<optimized out>, type=<optimized out>) at items/qquickitem.cpp:6135
#8  0x00007f21f61a51be in QQuickItem::update (this=<optimized out>) at items/qquickitem.cpp:4439
#9  0x00007f21f62097b2 in QQuickText::setLinkColor (this=0x55be8ac8a670, color=...) at items/qquicktext.cpp:1751
#10 0x00007f21f62126eb in QQuickText::qt_static_metacall (_o=_o@entry=0x55be8ac8a670, _c=_c@entry=QMetaObject::WriteProperty, _id=_id@entry=3, _a=_a@entry=0x7fff2e03d3f0) at .moc/moc_qquicktext_p.cpp:885
#11 0x00007f21f6212b83 in QQuickText::qt_metacall (this=0x55be8ac8a670, _c=QMetaObject::WriteProperty, _id=3, _a=0x7fff2e03d3f0) at .moc/moc_qquicktext_p.cpp:966
#12 0x00007f21e2cce9d5 in QQuickLabel::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5QuickTemplates2.so.5
#13 0x00007f21f5bf57c6 in QV4::QQmlValueTypeWrapper::write (this=this@entry=0x7f21c29444c8, target=0x55be8ac8a670, propertyIndex=47) at qml/qqmlvaluetypewrapper.cpp:331
#14 0x00007f21f5bee2c4 in GenericBinding<0>::write (this=0x55be8ac8b000, result=..., isUndefined=<optimized out>, flags=...) at qml/qqmlbinding.cpp:318
#15 0x00007f21f5bef417 in QQmlNonbindingBinding::doUpdate (this=0x55be8ac8b000, watcher=..., flags=..., scope=...) at qml/qqmlbinding.cpp:249
#16 0x00007f21f5beb9e3 in QQmlBinding::update (this=0x55be8ac8b000, flags=...) at qml/qqmlbinding.cpp:185
#17 0x00007f21f5bc50e2 in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x0) at qml/qqmlnotifier.cpp:104
#18 0x00007f21f5b6c439 in QQmlData::signalEmitted (object=0x55be8aca12b0, index=<optimized out>, a=0x0) at qml/qqmlengine.cpp:887
#19 0x00007f21f8088f37 in QMetaObject::activate (sender=0x55be8aca12b0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3678
#20 0x00007f21d1ce95b0 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5Kirigami2.so.5
#21 0x00007f21f808a272 in QObject::event (this=0x55be8aca12b0, e=<optimized out>) at kernel/qobject.cpp:1260
#22 0x00007f21f90eceac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f21f90f44b0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f21f8058d48 in QCoreApplication::notifyInternal2 (receiver=0x55be8aca12b0, event=0x55be8995a660) at kernel/qcoreapplication.cpp:1095
#25 0x00007f21f8058f1e in QCoreApplication::sendEvent (receiver=<optimized out>, event=event@entry=0x55be8995a660) at kernel/qcoreapplication.cpp:1490
#26 0x00007f21f805b667 in QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x55be87a92ff0) at kernel/qcoreapplication.cpp:1840
#27 0x00007f21f805bbf8 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1694
#28 0x00007f21f80b73a3 in postEventSourceDispatch (s=0x55be87af3740) at kernel/qeventdispatcher_glib.cpp:277
#29 0x00007f21f0bd7417 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007f21f0bd7650 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007f21f0bd76dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f21f80b69bf in QEventDispatcherGlib::processEvents (this=0x55be87af6a00, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#33 0x00007f21f8056eaa in QEventLoop::exec (this=this@entry=0x7fff2e03f6a0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#34 0x00007f21f8060220 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1403
#35 0x000055be87479218 in ?? ()
#36 0x00007f21f7670b97 in __libc_start_main (main=0x55be87478e30, argc=1, argv=0x7fff2e03f8c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff2e03f8b8) at ../csu/libc-start.c:310
#37 0x000055be8747929a in _start ()

The reporter indicates this bug may be a duplicate of or related to bug 412918.

Possible duplicates by query: bug 412918, bug 403978, bug 360592, bug 360130, bug 357070.

Reported using DrKonqi