Bug 496366

Summary: Powerdevil crashed in KScreen::WaylandConfig::removeOutput() after waking from sleep
Product: [Plasma] KScreen Reporter: Neelava Chatterjee <neelavac53>
Component: commonAssignee: kscreen-bugs-null <kscreen-bugs-null>
Status: REPORTED ---    
Severity: crash CC: natalie_clarius, nate
Priority: NOR Keywords: drkonqi, wayland-only
Version First Reported In: 6.2.4   
Target Milestone: 1.0   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report: https://crash-reports.kde.org/organizations/kde/issues/77090/events/4332bbf508af4b87bafc109a9edfead9/

Description Neelava Chatterjee 2024-11-17 06:10:05 UTC 
Application: org_kde_powerdevil (6.2.3)

ApplicationNotResponding [ANR]: false
Qt Version: 6.8.0
Frameworks Version: 6.8.0
Operating System: Linux 6.11.6-arch1-1 x86_64
Windowing System: Wayland
Distribution: Arch Linux
DrKonqi: 6.2.3 [CoredumpBackend]

-- Information about the crash:
Put my laptop to sleep using the kde application launcher and then closed the lid after it went to sleep, which(closing the lid) is also supposed to do the same. And it slept fine cause the display was off and my power button has a light and that too went out. Now after about 2 hrs I opened the lid and everything started fine after I logged in and then I saw the error in the UI. The error shows a seg fault and I haven't delved deeper.
Could be an intermittent bug but still reporting it anyway. If a lot of people do see this happening maybe need to take a look? Please do reach out if I can help in anyway.

The crash does not seem to be reproducible.

-- Backtrace:
Application: KDE Power Management System (org_kde_powerdevil), signal: Segmentation fault
Content of s_kcrashErrorMessage: std::unique_ptr<char []> = {get() = <optimized out>}

warning: Can't open file /memfd:pulseaudio (deleted) during file-backed mapping note processing
[New LWP 927]
[New LWP 1795]
[New LWP 992]
[New LWP 994]
[New LWP 87615]
[New LWP 984]
[New LWP 25410]
[New LWP 993]
[New LWP 87616]
[New LWP 1796]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Core was generated by `/usr/lib/org_kde_powerdevil'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=11, no_tid=no_tid@entry=0) at pthread_kill.c:44
44	      return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO (ret) : 0;
[Current thread is 1 (Thread 0x7b97914972c0 (LWP 927))]

Cannot QML trace cores :(
/usr/share/drkonqi/gdb/python/gdb_preamble/preamble.py:516: DeprecationWarning: datetime.datetime.utcfromtimestamp() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.fromtimestamp(timestamp, datetime.UTC).
  boot_time = datetime.utcfromtimestamp(psutil.boot_time()).strftime('%Y-%m-%dT%H:%M:%S')
/usr/share/drkonqi/gdb/python/gdb_preamble/preamble.py:533: DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC).
  'timestamp': datetime.utcnow().isoformat(),
[Current thread is 1 (Thread 0x7b97914972c0 (LWP 927))]

Thread 10 (Thread 0x7b97696006c0 (LWP 1796)):
#0  0x00007b979891abb0 in __GI_ppoll (fds=fds@entry=0x5f72de22dfd0, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:42
#1  0x00007b97981ce227 in ppoll (__fds=0x5f72de22dfd0, __nfds=1, __timeout=0x0, __ss=0x0) at /usr/include/bits/poll2.h:101
#2  g_main_context_poll_unlocked (priority=<optimized out>, context=0x7b9748000c90, timeout_usec=<optimized out>, fds=0x5f72de22dfd0, n_fds=1) at ../glib/glib/gmain.c:4591
#3  g_main_context_iterate_unlocked.isra.0 (context=context@entry=0x7b9748000c90, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4268
#4  0x00007b979816aa55 in g_main_context_iteration (context=0x7b9748000c90, may_block=1) at ../glib/glib/gmain.c:4338
#5  0x00007b97991bf71d in QEventDispatcherGlib::processEvents (this=0x7b9748000ba0, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:396
#6  0x00007b9798f64566 in QEventLoop::processEvents (this=0x7b97695ffb70, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:100
#7  QEventLoop::exec (this=0x7b97695ffb70, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:191
#8  0x00007b97990571d2 in QThread::exec (this=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread.cpp:621
#9  QThread::run (this=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread.cpp:742
#10 0x00007b97990d840f in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:335
#11 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:263
#12 QThreadPrivate::start (arg=0x7b978c01e458) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:294
#13 0x00007b97988a339d in start_thread (arg=<optimized out>) at pthread_create.c:447
#14 0x00007b979892849c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 9 (Thread 0x7b9774c006c0 (LWP 87616)):
#0  0x00007b979891a63d in __GI___poll (fds=fds@entry=0x7b9774bffb60, nfds=nfds@entry=2, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007b97985c0417 in poll (__fds=0x7b9774bffb60, __nfds=2, __timeout=-1) at /usr/include/bits/poll2.h:44
#2  QtWaylandClient::EventThread::run (this=0x5f72de40feb0) at /usr/src/debug/qt6-wayland/qtwayland/src/client/qwaylanddisplay.cpp:182
#3  0x00007b97990d840f in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:335
#4  (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:263
#5  QThreadPrivate::start (arg=0x5f72de40feb0) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:294
#6  0x00007b97988a339d in start_thread (arg=<optimized out>) at pthread_create.c:447
#7  0x00007b979892849c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 8 (Thread 0x7b978a0006c0 (LWP 993)):
#0  0x00007b979891abb0 in __GI_ppoll (fds=fds@entry=0x5f72de1ff020, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:42
#1  0x00007b97981ce227 in ppoll (__fds=0x5f72de1ff020, __nfds=1, __timeout=0x0, __ss=0x0) at /usr/include/bits/poll2.h:101
#2  g_main_context_poll_unlocked (priority=<optimized out>, context=0x5f72de1feda0, timeout_usec=<optimized out>, fds=0x5f72de1ff020, n_fds=1) at ../glib/glib/gmain.c:4591
#3  g_main_context_iterate_unlocked.isra.0 (context=context@entry=0x5f72de1feda0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4268
#4  0x00007b979816aa55 in g_main_context_iteration (context=0x5f72de1feda0, may_block=may_block@entry=1) at ../glib/glib/gmain.c:4338
#5  0x00007b979816aab2 in glib_worker_main (data=<optimized out>) at ../glib/glib/gmain.c:6537
#6  0x00007b979819f026 in g_thread_proxy (data=0x5f72de1fefc0) at ../glib/glib/gthread.c:892
#7  0x00007b97988a339d in start_thread (arg=<optimized out>) at pthread_create.c:447
#8  0x00007b979892849c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 7 (Thread 0x7b9768c006c0 (LWP 25410)):
#0  0x00007b979891a63d in __GI___poll (fds=fds@entry=0x7b97400073e0, nfds=nfds@entry=2, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007b978be549b7 in poll (__timeout=-1, __nfds=2, __fds=0x7b97400073e0) at /usr/include/bits/poll2.h:39
#2  poll_func (ufds=0x7b97400073e0, nfds=2, timeout=-1, userdata=0x5f72de4a4180) at ../pulseaudio/src/pulse/thread-mainloop.c:70
#3  0x00007b978be3e45c in pa_mainloop_poll (m=m@entry=0x5f72de45e590) at ../pulseaudio/src/pulse/mainloop.c:863
#4  0x00007b978be4861c in pa_mainloop_iterate (m=m@entry=0x5f72de45e590, block=block@entry=1, retval=retval@entry=0x0) at ../pulseaudio/src/pulse/mainloop.c:945
#5  0x00007b978be486d1 in pa_mainloop_run (m=0x5f72de45e590, retval=0x0) at ../pulseaudio/src/pulse/mainloop.c:963
#6  0x00007b978be58bf2 in thread (userdata=0x5f72de4b3870) at ../pulseaudio/src/pulse/thread-mainloop.c:101
#7  0x00007b978b5d52b7 in internal_thread_func (userdata=0x5f72de421e30) at ../pulseaudio/src/pulsecore/thread-posix.c:81
#8  0x00007b97988a339d in start_thread (arg=<optimized out>) at pthread_create.c:447
#9  0x00007b979892849c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 6 (Thread 0x7b9790e006c0 (LWP 984)):
#0  0x00007b979891abb0 in __GI_ppoll (fds=fds@entry=0x5f72de1d7780, nfds=nfds@entry=4, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:42
#1  0x00007b97981ce227 in ppoll (__fds=0x5f72de1d7780, __nfds=4, __timeout=0x0, __ss=0x0) at /usr/include/bits/poll2.h:101
#2  g_main_context_poll_unlocked (priority=<optimized out>, context=0x7b978c000cb0, timeout_usec=<optimized out>, fds=0x5f72de1d7780, n_fds=4) at ../glib/glib/gmain.c:4591
#3  g_main_context_iterate_unlocked.isra.0 (context=context@entry=0x7b978c000cb0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4268
#4  0x00007b979816aa55 in g_main_context_iteration (context=0x7b978c000cb0, may_block=1) at ../glib/glib/gmain.c:4338
#5  0x00007b97991bf71d in QEventDispatcherGlib::processEvents (this=0x7b978c000ba0, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:396
#6  0x00007b9798f64566 in QEventLoop::processEvents (this=0x7b9790dffb20, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:100
#7  QEventLoop::exec (this=0x7b9790dffb20, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:191
#8  0x00007b9799057072 in QThread::exec (this=this@entry=0x7b9799e5db20 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qt6-base/qtbase/src/corelib/global/qflags.h:74
#9  0x00007b9799dd279e in QDBusConnectionManager::run (this=0x7b9799e5db20 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qt6-base/qtbase/src/dbus/qdbusconnectionmanager.cpp:144
#10 0x00007b97990d840f in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:335
#11 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:263
#12 QThreadPrivate::start (arg=0x7b9799e5db20 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:294
#13 0x00007b97988a339d in start_thread (arg=<optimized out>) at pthread_create.c:447
#14 0x00007b979892849c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 5 (Thread 0x7b9780c006c0 (LWP 87615)):
#0  0x00007b979889fa19 in __futex_abstimed_wait_common64 (private=0, futex_word=0x5f72de485f64, expected=0, op=393, abstime=0x0, cancel=true) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x5f72de485f64, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007b979889fa9f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5f72de485f64, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007b97988a2479 in __pthread_cond_wait_common (cond=0x5f72de485f38, mutex=<optimized out>, clockid=0, abstime=0x0) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x5f72de485f38, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007b97990dd030 in QWaitConditionPrivate::wait (this=0x5f72de485f10, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:102
#6  QWaitCondition::wait (this=this@entry=0x5f72de3e80e0, mutex=mutex@entry=0x5f72de3e80d8, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:180
#7  0x00007b97985c03af in QtWaylandClient::EventThread::waitForReading (this=0x5f72de3e80a0) at /usr/src/debug/qt6-wayland/qtwayland/src/client/qwaylanddisplay.cpp:216
#8  QtWaylandClient::EventThread::run (this=0x5f72de3e80a0) at /usr/src/debug/qt6-wayland/qtwayland/src/client/qwaylanddisplay.cpp:177
#9  0x00007b97990d840f in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:335
#10 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:263
#11 QThreadPrivate::start (arg=0x5f72de3e80a0) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:294
#12 0x00007b97988a339d in start_thread (arg=<optimized out>) at pthread_create.c:447
#13 0x00007b979892849c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 4 (Thread 0x7b97896006c0 (LWP 994)):
#0  0x00007b979891abb0 in __GI_ppoll (fds=fds@entry=0x7b976c000b90, nfds=nfds@entry=2, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:42
#1  0x00007b97981ce227 in ppoll (__fds=0x7b976c000b90, __nfds=2, __timeout=0x0, __ss=0x0) at /usr/include/bits/poll2.h:101
#2  g_main_context_poll_unlocked (priority=<optimized out>, context=0x5f72de20ade0, timeout_usec=<optimized out>, fds=0x7b976c000b90, n_fds=2) at ../glib/glib/gmain.c:4591
#3  g_main_context_iterate_unlocked.isra.0 (context=0x5f72de20ade0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4268
#4  0x00007b979816c287 in g_main_loop_run (loop=0x5f72de20ac30) at ../glib/glib/gmain.c:4475
#5  0x00007b9791815bc4 in gdbus_shared_thread_func (user_data=0x5f72de20adb0) at ../glib/gio/gdbusprivate.c:284
#6  0x00007b979819f026 in g_thread_proxy (data=0x5f72de206e10) at ../glib/glib/gthread.c:892
#7  0x00007b97988a339d in start_thread (arg=<optimized out>) at pthread_create.c:447
#8  0x00007b979892849c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 3 (Thread 0x7b978aa006c0 (LWP 992)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007b979819cf20 in g_cond_wait_impl (cond=0x7b978c00fac8, mutex=0x7b978c00fac0) at ../glib/glib/gthread-posix.c:1007
#2  g_cond_wait (cond=0x7b978c00fac8, mutex=0x7b978c00fac0) at ../glib/glib/gthread.c:1665
#3  0x00007b979813398c in g_async_queue_pop_intern_unlocked (queue=0x7b978c00fac0, wait=1, end_time=-1) at ../glib/glib/gasyncqueue.c:375
#4  0x00007b97981a3137 in g_thread_pool_spawn_thread (data=<optimized out>) at ../glib/glib/gthreadpool.c:297
#5  0x00007b979819f026 in g_thread_proxy (data=0x5f72de1f53b0) at ../glib/glib/gthread.c:892
#6  0x00007b97988a339d in start_thread (arg=<optimized out>) at pthread_create.c:447
#7  0x00007b979892849c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 2 (Thread 0x7b9788c006c0 (LWP 1795)):
#0  0x00007b97988f0733 in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=req@entry=0x7b9788bffa40, rem=rem@entry=0x0) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:48
#1  0x00007b97988fc827 in __GI___nanosleep (req=req@entry=0x7b9788bffa40, rem=rem@entry=0x0) at ../sysdeps/unix/sysv/linux/nanosleep.c:25
#2  0x00007b9798927f9a in usleep (useconds=<optimized out>) at ../sysdeps/posix/usleep.c:31
#3  0x00007b97984c0f50 in stabilized_connector_names (prior=..., some_displays_disconnected=some_displays_disconnected@entry=true) at ddc/ddc_watch_displays.c:593
#4  0x00007b97984c111d in ddc_check_displays (prev_connector_names=..., events_queue=events_queue@entry=0x7b97640023e0) at ddc/ddc_watch_displays.c:655
#5  0x00007b97984c2930 in ddc_watch_displays_using_udev (data=<optimized out>) at ddc/ddc_watch_displays.c:1045
#6  ddc_watch_displays_using_udev (data=<optimized out>) at ddc/ddc_watch_displays.c:923
#7  0x00007b979819f026 in g_thread_proxy (data=0x5f72de1c03c0) at ../glib/glib/gthread.c:892
#8  0x00007b97988a339d in start_thread (arg=<optimized out>) at pthread_create.c:447
#9  0x00007b979892849c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 1 (Thread 0x7b97914972c0 (LWP 927)):
[KCrash Handler]
#5  0x00007b9790267e29 in KScreen::WaylandConfig::removeOutput (this=0x5f72de482350, output=<optimized out>) at /usr/src/debug/libkscreen/libkscreen-6.2.3/backends/kwayland/waylandconfig.cpp:251
#6  operator() (interfaceName=<optimized out>, __closure=<optimized out>) at /usr/src/debug/libkscreen/libkscreen-6.2.3/backends/kwayland/waylandconfig.cpp:202
#7  operator() (__closure=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:141
#8  QtPrivate::FunctorCallBase::call_internal<void, QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<unsigned int>, void, KScreen::WaylandConfig::addOutput(quint32, quint32)::<lambda(const uint32_t&)> >::call(KScreen::WaylandConfig::addOutput(quint32, quint32)::<lambda(const uint32_t&)>&, void**)::<lambda()> > (args=<optimized out>, fn=...) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:65
#9  QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<unsigned int>, void, KScreen::WaylandConfig::addOutput(quint32, quint32)::<lambda(const uint32_t&)> >::call (f=..., arg=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:140
#10 QtPrivate::FunctorCallable<KScreen::WaylandConfig::addOutput(quint32, quint32)::<lambda(const uint32_t&)>, unsigned int>::call<QtPrivate::List<unsigned int>, void> (f=..., arg=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:362
#11 QtPrivate::QCallableObject<KScreen::WaylandConfig::addOutput(quint32, quint32)::<lambda(const uint32_t&)>, QtPrivate::List<unsigned int>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=<optimized out>, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/qt6/QtCore/qobjectdefs_impl.h:572
#12 0x00007b9798fb2229 in QtPrivate::QSlotObjectBase::call (this=<optimized out>, r=<optimized out>, a=<optimized out>, this=<optimized out>, r=<optimized out>, a=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobjectdefs_impl.h:486
#13 doActivate<false> (sender=<optimized out>, signal_index=<optimized out>, argv=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:4120
#14 0x00007b979025f324 in KScreen::WaylandConfig::globalRemoved (this=<optimized out>, _t1=<optimized out>) at /usr/src/debug/libkscreen/build/backends/kwayland/KSC_KWayland_autogen/include/moc_waylandconfig.cpp:180
#15 operator() (__closure=0x0, data=<optimized out>, registry=<optimized out>, name=<optimized out>) at /usr/src/debug/libkscreen/libkscreen-6.2.3/backends/kwayland/waylandconfig.cpp:137
#16 _FUN () at /usr/src/debug/libkscreen/libkscreen-6.2.3/backends/kwayland/waylandconfig.cpp:138
#17 0x00007b9796bde596 in ffi_call_unix64 () at ../src/x86/unix64.S:104
#18 0x00007b9796bdb00e in ffi_call_int (cif=cif@entry=0x7ffecfc146e0, fn=<optimized out>, rvalue=<optimized out>, avalue=<optimized out>, closure=closure@entry=0x0) at ../src/x86/ffi64.c:673
#19 0x00007b9796bddbd3 in ffi_call (cif=cif@entry=0x7ffecfc146e0, fn=<optimized out>, rvalue=rvalue@entry=0x0, avalue=avalue@entry=0x7ffecfc147b0) at ../src/x86/ffi64.c:710
#20 0x00007b9799cd88b0 in wl_closure_invoke (closure=closure@entry=0x7b974c006250, target=<optimized out>, target@entry=0x5f72de42e0c0, opcode=opcode@entry=1, data=<optimized out>, flags=1) at ../wayland-1.23.1/src/connection.c:1228
#21 0x00007b9799cd9139 in dispatch_event (display=display@entry=0x5f72de45d010, queue=queue@entry=0x5f72de45d108) at ../wayland-1.23.1/src/wayland-client.c:1674
#22 0x00007b9799cd9553 in dispatch_queue (display=0x5f72de45d010, queue=0x5f72de45d108) at ../wayland-1.23.1/src/wayland-client.c:1820
#23 wl_display_dispatch_queue_pending (display=0x5f72de45d010, queue=0x5f72de45d108) at ../wayland-1.23.1/src/wayland-client.c:2062
#24 0x00007b97985c0266 in QtWaylandClient::QWaylandDisplay::flushRequests (this=<optimized out>) at /usr/src/debug/qt6-wayland/qtwayland/src/client/qwaylanddisplay.cpp:227
#25 0x00007b9798fa348a in QObject::event (this=0x5f72de1d1e40, e=0x7b975400a820) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:1419
#26 0x00007b9798f585a8 in QCoreApplication::notifyInternal2 (receiver=0x5f72de1d1e40, event=event@entry=0x7b975400a820) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1165
#27 0x00007b9798f59035 in QCoreApplication::sendEvent (receiver=<optimized out>, event=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1609
#28 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x5f72de1cb3a0) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1965
#29 0x00007b97991c23fc in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1797
#30 postEventSourceDispatch (s=0x5f72de1cb650) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:246
#31 0x00007b979816b559 in g_main_dispatch (context=0x7b978c000f30) at ../glib/glib/gmain.c:3357
#32 0x00007b97981ce157 in g_main_context_dispatch_unlocked (context=0x7b978c000f30) at ../glib/glib/gmain.c:4208
#33 g_main_context_iterate_unlocked.isra.0 (context=context@entry=0x7b978c000f30, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4273
#34 0x00007b979816aa55 in g_main_context_iteration (context=0x7b978c000f30, may_block=1) at ../glib/glib/gmain.c:4338
#35 0x00007b97991bf71d in QEventDispatcherGlib::processEvents (this=0x5f72de1cf5b0, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:396
#36 0x00007b9798f64566 in QEventLoop::processEvents (this=0x7ffecfc14e40, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:100
#37 QEventLoop::exec (this=0x7ffecfc14e40, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:191
#38 0x00007b9798f59a2f in QCoreApplication::exec () at /usr/src/debug/qt6-base/qtbase/src/corelib/global/qflags.h:74
#39 0x00005f72dce22727 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/powerdevil/powerdevil-6.2.3/daemon/powerdevilapp.cpp:134

Reported using DrKonqi
Comment 1 Nate Graham 2024-11-19 19:03:36 UTC 
Do you by any chance have an external monitor plugged into the laptop?
Comment 2 Neelava Chatterjee 2024-11-21 05:06:48 UTC 
(In reply to Nate Graham from comment #1)
> Do you by any chance have an external monitor plugged into the laptop?

Yes I do. It's a Dell Monitor. I am running nvidia dGPU right now instead of the iGPU for the sole purpose of using the external monitor. This is because my laptop is nvidia optimus and the hdmi port is wired to the dGPU(nvidia). But I generally unplug the external monitor before I sleep or shutdown as waking up connected sometimes freezes the device if I am on the SDDM login screen.
Comment 3 Nate Graham 2024-11-21 20:37:08 UTC 
Thanks. To be clear, did this crash happen during one of the times when you unplugged the external screen before closing the lid? If so, approximately how long did you wait after disconnecting the external screen before closing the lid?
Comment 4 Neelava Chatterjee 2024-11-27 09:01:38 UTC 
(In reply to Nate Graham from comment #3)
> Thanks. To be clear, did this crash happen during one of the times when you
> unplugged the external screen before closing the lid? If so, approximately
> how long did you wait after disconnecting the external screen before closing
> the lid?

Hey sorry for the late reply. So I generally wait for 10-20 sec max. So should be similar to that. The thing is I just wait for the KDE destop to settle down to a single screen like apps would move and the virtual desktop in the panel would become smaller, etc. once I see this I put it to sleep or shutdown.