Application: plasmashell (5.23.4)

Qt Version: 5.15.3
Frameworks Version: 5.88.0
Operating System: Linux 5.11.0-25-generic x86_64
Windowing System: X11
Distribution: KDE neon User - Plasma 25th Anniversary Edition
DrKonqi: 5.23.4 [KCrashBackend]

-- Information about the crash:
- What I was doing when the application crashed:
I added a screen layout switcher widget, clicked an option, my monitors messed up, switched places, wrong layout.
 after I got into settings and reset my main screen started flickering and only has a lower resolution.

The screen layout applet should probably offer a way to reset to the previous config easily, like in systemsettings

The reporter is unsure if this crash is reproducible.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault

[New LWP 3326]
[New LWP 3330]
[New LWP 3331]
[New LWP 3332]
[New LWP 3333]
[New LWP 3415]
[New LWP 4040]
[New LWP 4043]
[New LWP 4142]
[New LWP 4260]
[New LWP 4270]
[New LWP 4457]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f3d11e44aff in __GI___poll (fds=0x7fffd9b51b38, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
__preamble__
[Current thread is 1 (Thread 0x7f3d0df999c0 (LWP 3278))]

Thread 13 (Thread 0x7f3ca6535700 (LWP 4457)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x558c3ed4df14) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x558c3ed4dec0, cond=0x558c3ed4dee8) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x558c3ed4dee8, mutex=0x558c3ed4dec0) at pthread_cond_wait.c:638
#3  0x00007f3d121d95cb in QWaitConditionPrivate::wait(QDeadlineTimer) (deadline=..., this=0x558c3ed4dec0) at thread/qwaitcondition_unix.cpp:146
#4  QWaitCondition::wait(QMutex*, QDeadlineTimer) (this=<optimized out>, mutex=0x558c44431240, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5  0x00007f3d13e44c24 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f3d13e45099 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f3d121d345c in QThreadPrivate::start(void*) (arg=0x558c444311a0) at thread/qthread_unix.cpp:329
#8  0x00007f3d1111e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f3d11e51293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f3c977fe700 (LWP 4270)):
#0  0x00007f3d11e44aff in __GI___poll (fds=0x7f3c88005240, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f3d106ed36e in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3d106ed4a3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3d1241461b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f3c88000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f3d123b88ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3c977fdbe0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007f3d121d22c2 in QThread::exec() (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007f3d121d345c in QThreadPrivate::start(void*) (arg=0x558c400f53c0) at thread/qthread_unix.cpp:329
#7  0x00007f3d1111e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007f3d11e51293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f3ca50b1700 (LWP 4260)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x558c3ed10c34) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x558c3ed10be0, cond=0x558c3ed10c08) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x558c3ed10c08, mutex=0x558c3ed10be0) at pthread_cond_wait.c:638
#3  0x00007f3d121d95cb in QWaitConditionPrivate::wait(QDeadlineTimer) (deadline=..., this=0x558c3ed10be0) at thread/qwaitcondition_unix.cpp:146
#4  QWaitCondition::wait(QMutex*, QDeadlineTimer) (this=<optimized out>, mutex=0x558c3ed90e90, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5  0x00007f3d13e44c24 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f3d13e45099 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f3d121d345c in QThreadPrivate::start(void*) (arg=0x558c3ed90df0) at thread/qthread_unix.cpp:329
#8  0x00007f3d1111e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f3d11e51293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f3cbd701700 (LWP 4142)):
#0  __GI___libc_read (nbytes=16, buf=0x7f3cbd700990, fd=43) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=43, buf=0x7f3cbd700990, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f3d10735b2f in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3d106ecebe in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f3d106ed312 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f3d106ed4a3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f3d1241461b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f3ca8000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#7  0x00007f3d123b88ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3cbd700ba0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#8  0x00007f3d121d22c2 in QThread::exec() (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#9  0x00007f3cbc1cd07c in KCupsConnection::run() () at /lib/x86_64-linux-gnu/libkcupslib.so
#10 0x00007f3d121d345c in QThreadPrivate::start(void*) (arg=0x558c401ccbb0) at thread/qthread_unix.cpp:329
#11 0x00007f3d1111e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007f3d11e51293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f3cbe7fe700 (LWP 4043)):
#0  0x00007f3d1073a500 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f3d106ec8e1 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3d106ed29b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3d106ed4a3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f3d1241461b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f3cac000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f3d123b88ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3cbe7fdba0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#6  0x00007f3d121d22c2 in QThread::exec() (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#7  0x00007f3d13d7f3fa in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f3d121d345c in QThreadPrivate::start(void*) (arg=0x558c3f0d1960) at thread/qthread_unix.cpp:329
#9  0x00007f3d1111e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#10 0x00007f3d11e51293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f3cddffb700 (LWP 4040)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x558c40299b34) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x558c40299ae0, cond=0x558c40299b08) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x558c40299b08, mutex=0x558c40299ae0) at pthread_cond_wait.c:638
#3  0x00007f3d121d95cb in QWaitConditionPrivate::wait(QDeadlineTimer) (deadline=..., this=0x558c40299ae0) at thread/qwaitcondition_unix.cpp:146
#4  QWaitCondition::wait(QMutex*, QDeadlineTimer) (this=<optimized out>, mutex=0x558c4001e4a0, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5  0x00007f3d13e44c24 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007f3d13e45099 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f3d121d345c in QThreadPrivate::start(void*) (arg=0x558c4001e400) at thread/qthread_unix.cpp:329
#8  0x00007f3d1111e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f3d11e51293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f3d048a9700 (LWP 3415)):
#0  __GI___libc_read (nbytes=16, buf=0x7f3d048a89b0, fd=13) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=13, buf=0x7f3d048a89b0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f3d10735b2f in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3d106ecebe in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f3d106ed312 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f3d106ed4a3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f3d1241461b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f3ce8000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#7  0x00007f3d123b88ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3d048a8bc0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#8  0x00007f3d121d22c2 in QThread::exec() (this=this@entry=0x558c3ede9ab0) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#9  0x00007f3d139e5549 in QQmlThreadPrivate::run() (this=0x558c3ede9ab0) at qml/ftw/qqmlthread.cpp:155
#10 0x00007f3d121d345c in QThreadPrivate::start(void*) (arg=0x558c3ede9ab0) at thread/qthread_unix.cpp:329
#11 0x00007f3d1111e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007f3d11e51293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f3d0517a700 (LWP 3333)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f3d080054d8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f3d08005488, cond=0x7f3d080054b0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f3d080054b0, mutex=0x7f3d08005488) at pthread_cond_wait.c:638
#3  0x00007f3d06b4bb1b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f3d06b4b71b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f3d1111e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f3d11e51293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f3d0597b700 (LWP 3332)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f3d080054dc) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f3d08005488, cond=0x7f3d080054b0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f3d080054b0, mutex=0x7f3d08005488) at pthread_cond_wait.c:638
#3  0x00007f3d06b4bb1b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f3d06b4b71b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f3d1111e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f3d11e51293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f3d0617c700 (LWP 3331)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f3d080054dc) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f3d08005488, cond=0x7f3d080054b0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f3d080054b0, mutex=0x7f3d08005488) at pthread_cond_wait.c:638
#3  0x00007f3d06b4bb1b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f3d06b4b71b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f3d1111e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f3d11e51293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f3d0697d700 (LWP 3330)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f3d080054dc) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f3d08005488, cond=0x7f3d080054b0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f3d080054b0, mutex=0x7f3d08005488) at pthread_cond_wait.c:638
#3  0x00007f3d06b4bb1b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f3d06b4b71b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f3d1111e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f3d11e51293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f3d07fff700 (LWP 3326)):
#0  0x00007f3d11e44aff in __GI___poll (fds=0x7f3d00004e60, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f3d106ed36e in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3d106ed4a3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3d1241461b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f3d00000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f3d123b88ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f3d07ffebb0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007f3d121d22c2 in QThread::exec() (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007f3d12d45f4b in  () at /lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f3d121d345c in QThreadPrivate::start(void*) (arg=0x7f3d12dc9d80) at thread/qthread_unix.cpp:329
#8  0x00007f3d1111e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f3d11e51293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f3d0df999c0 (LWP 3278)):
[KCrash Handler]
#4  0x00007f3d123f08ef in qGetPtrHelper<QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> > >(QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >&) (ptr=...) at kernel/qobject.cpp:3766
#5  QObject::d_func() (this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject.h:132
#6  QObjectPrivate::get(QObject*) (o=<optimized out>) at kernel/qobject_p.h:339
#7  doActivate<false>(QObject*, int, void**) (sender=0xf06f8d48550017c9, signal_index=4, argv=0x0) at kernel/qobject.cpp:3768
#8  0x00007f3d13e80336 in QQuickItemPrivate::dirty(QQuickItemPrivate::DirtyType) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f3d13e8197b in QQuickItem::setSize(QSizeF const&) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f3d13e70ea9 in  () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f3d13e876b4 in QQuickItem::geometryChanged(QRectF const&, QRectF const&) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f3d1479a32d in PlasmaQuick::AppletQuickItem::geometryChanged(QRectF const&, QRectF const&) () at /lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#13 0x00007f3d13e819ed in QQuickItem::setSize(QSizeF const&) () at /lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f3d147a5da8 in  () at /lib/x86_64-linux-gnu/libKF5PlasmaQuick.so.5
#15 0x0000558c3d18fe53 in ShellCorona::addOutput(QScreen*) (this=0x558c3ed782f0, screen=<optimized out>) at ./shell/shellcorona.cpp:1228
#16 0x00007f3d123f0dce in QtPrivate::QSlotObjectBase::call(QObject*, void**) (a=0x7fffd9b52c90, r=0x558c3ed782f0, this=0x7f3d0800f020) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#17 doActivate<false>(QObject*, int, void**) (sender=0x7fffd9b531a0, signal_index=9, argv=0x7fffd9b52c90) at kernel/qobject.cpp:3886
#18 0x00007f3d1278fc66 in QGuiApplication::screenAdded(QScreen*) () at /lib/x86_64-linux-gnu/libQt5Gui.so.5
#19 0x00007f3d12778650 in QWindowSystemInterface::handleScreenAdded(QPlatformScreen*, bool) () at /lib/x86_64-linux-gnu/libQt5Gui.so.5
#20 0x00007f3d0d891d2b in QXcbConnection::createScreen(QXcbVirtualDesktop*, xcb_randr_output_change_t const&, xcb_randr_get_output_info_reply_t*) () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#21 0x00007f3d0d893342 in QXcbConnection::updateScreens(xcb_randr_notify_event_t const*) () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#22 0x00007f3d0d866290 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#23 0x00007f3d0d866676 in QXcbConnection::processXcbEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#24 0x00007f3d0d88fea7 in  () at /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#25 0x00007f3d106ed17d in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f3d106ed400 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f3d106ed4a3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f3d12414602 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x558c3ea3cf60, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#29 0x00007f3d123b88ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fffd9b53080, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#30 0x00007f3d123c0a64 in QCoreApplication::exec() () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#31 0x0000558c3d167cf5 in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at ./shell/main.cpp:238
[Inferior 1 (process 3278) detached]

Possible duplicates by query: bug 446808, bug 446671, bug 446619, bug 446531, bug 446421.

Reported using DrKonqi