Bug 515884

Summary: Unplugging Monitors Crashes KDE
Product: [Plasma] plasmashell Reporter: Jack <outlaw21kawasaki>
Component: generic-crashAssignee: Plasma Bugs List <plasma-bugs-null>
Status: NEEDSINFO WAITINGFORINFO    
Severity: crash CC: olib141
Priority: NOR Keywords: drkonqi
Version First Reported In: 6.5.5   
Target Milestone: 1.0   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Jack 2026-02-11 20:24:55 UTC 
Application: plasmashell (6.5.5)

ApplicationNotResponding [ANR]: false
Qt Version: 6.10.1
Frameworks Version: 6.22.0
Operating System: Linux 6.18.8-200.fc43.x86_64 x86_64
Windowing System: Wayland
Distribution: "Fedora Linux 43 (KDE Plasma Desktop Edition)"
DrKonqi: 6.5.5 [CoredumpBackend]

-- Information about the crash:
I was replacing a HDMI cable, but because I have 4 displays I unplugged many of them in turn to figure out which cable was the right one (of course it was the very last one). When I returned from under my desk my middle 2 monitors are an insanely low resolution, and this bug report window popped up.

If it's any help...
NVIDIA GTX 1660
Left - 1080p (replaced cable)
Center-left - 1080p
Center-right - 1440p
Right - 1080p (vertical)

The reporter is unsure if this crash is reproducible.

-- Backtrace:
Application: plasmashell (plasmashell), signal: Aborted


This GDB supports auto-downloading debuginfo from the following URLs:
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  <https://debuginfod.fedoraproject.org/>
  <ima:ignore>
Enable debuginfod for this session? (y or [n]) [answered N; input not from terminal]
Debuginfod has been disabled.
To make this setting permanent, add 'set debuginfod enabled off' to .gdbinit.

warning: Can't open file /memfd:JSGCHeap:QtQml (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:kwin-dmabuf-feedback-table (deleted) during file-backed mapping note processing
[New LWP 2427]
[New LWP 2622]
[New LWP 2479]
[New LWP 2478]
[New LWP 2595]
[New LWP 2651]
[New LWP 2701]
[New LWP 4085]
[New LWP 4066]
[New LWP 2872]
[New LWP 2453]
[New LWP 2627]
[New LWP 2650]
[New LWP 2629]
[New LWP 2660]
[New LWP 4090]
[New LWP 4081]
[New LWP 4082]
[New LWP 4084]
[New LWP 2972]
[New LWP 4083]
[New LWP 4086]
[New LWP 4091]
[New LWP 4070]
[New LWP 4071]
[New LWP 4087]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `/usr/bin/plasmashell --no-respawn'.
Program terminated with signal SIGABRT, Aborted.
#0  0x00007fdeb3e813cc in __pthread_kill_implementation () from /lib64/libc.so.6
[Current thread is 1 (Thread 0x7fdead6f4f00 (LWP 2427))]
[Current thread is 26 (Thread 0x7fde69e046c0 (LWP 4087))]

Thread 26 (Thread 0x7fde69e046c0 (LWP 4087)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7c2ac in __futex_abstimed_wait_common () at /lib64/libc.so.6
#3  0x00007fdeb3e7eb88 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#4  0x00007fdeb46da1a3 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib64/libQt6Core.so.6
#5  0x00007fdeb462fe9c in QThreadPoolThread::run() () at /lib64/libQt6Core.so.6
#6  0x00007fdeb46d19ae in QThreadPrivate::start(void*) () at /lib64/libQt6Core.so.6
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 25 (Thread 0x7fde637fe6c0 (LWP 4071)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7c2ac in __futex_abstimed_wait_common () at /lib64/libc.so.6
#3  0x00007fdeb3e7eb88 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#4  0x00007fdeb46da1a3 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib64/libQt6Core.so.6
#5  0x00007fdeb462fe9c in QThreadPoolThread::run() () at /lib64/libQt6Core.so.6
#6  0x00007fdeb46d19ae in QThreadPrivate::start(void*) () at /lib64/libQt6Core.so.6
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 24 (Thread 0x7fde696036c0 (LWP 4070)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7c2ac in __futex_abstimed_wait_common () at /lib64/libc.so.6
#3  0x00007fdeb3e7eb88 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#4  0x00007fdeb46da1a3 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib64/libQt6Core.so.6
#5  0x00007fdeb462fe9c in QThreadPoolThread::run() () at /lib64/libQt6Core.so.6
#6  0x00007fdeb46d19ae in QThreadPrivate::start(void*) () at /lib64/libQt6Core.so.6
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 23 (Thread 0x7fde2effd6c0 (LWP 4091)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7c2ac in __futex_abstimed_wait_common () at /lib64/libc.so.6
#3  0x00007fdeb3e7e97e in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#4  0x00007fde9ed95ccc in ??? () at /lib64/libEGL_nvidia.so.0
#5  0x00007fde9ed61a29 in ??? () at /lib64/libEGL_nvidia.so.0
#6  0x00007fde9ed9b9fe in ??? () at /lib64/libEGL_nvidia.so.0
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 22 (Thread 0x7fde62ffd6c0 (LWP 4086)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7c2ac in __futex_abstimed_wait_common () at /lib64/libc.so.6
#3  0x00007fdeb3e7eb88 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#4  0x00007fdeb46da1a3 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib64/libQt6Core.so.6
#5  0x00007fdeb462fe9c in QThreadPoolThread::run() () at /lib64/libQt6Core.so.6
#6  0x00007fdeb46d19ae in QThreadPrivate::start(void*) () at /lib64/libQt6Core.so.6
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 21 (Thread 0x7fde2dffb6c0 (LWP 4083)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7c2ac in __futex_abstimed_wait_common () at /lib64/libc.so.6
#3  0x00007fdeb3e7e97e in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#4  0x00007fde9ed95ccc in ??? () at /lib64/libEGL_nvidia.so.0
#5  0x00007fde9ed61a29 in ??? () at /lib64/libEGL_nvidia.so.0
#6  0x00007fde9ed9b9fe in ??? () at /lib64/libEGL_nvidia.so.0
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 20 (Thread 0x7fde2e7fc6c0 (LWP 2972)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7c2ac in __futex_abstimed_wait_common () at /lib64/libc.so.6
#3  0x00007fdeb3e7e97e in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#4  0x00007fde9ed95ccc in ??? () at /lib64/libEGL_nvidia.so.0
#5  0x00007fde9ed61a29 in ??? () at /lib64/libEGL_nvidia.so.0
#6  0x00007fde9ed9b9fe in ??? () at /lib64/libEGL_nvidia.so.0
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 19 (Thread 0x7fde68e026c0 (LWP 4084)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7c2ac in __futex_abstimed_wait_common () at /lib64/libc.so.6
#3  0x00007fdeb3e7eb88 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#4  0x00007fdeb46da1a3 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib64/libQt6Core.so.6
#5  0x00007fdeb462fe9c in QThreadPoolThread::run() () at /lib64/libQt6Core.so.6
#6  0x00007fdeb46d19ae in QThreadPrivate::start(void*) () at /lib64/libQt6Core.so.6
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 18 (Thread 0x7fde74ffe6c0 (LWP 4082)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7c2ac in __futex_abstimed_wait_common () at /lib64/libc.so.6
#3  0x00007fdeb3e7e97e in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#4  0x00007fde9ed95ccc in ??? () at /lib64/libEGL_nvidia.so.0
#5  0x00007fde9ed61a29 in ??? () at /lib64/libEGL_nvidia.so.0
#6  0x00007fde9ed9b9fe in ??? () at /lib64/libEGL_nvidia.so.0
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 17 (Thread 0x7fde2ffff6c0 (LWP 4081)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7c2ac in __futex_abstimed_wait_common () at /lib64/libc.so.6
#3  0x00007fdeb3e7e97e in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#4  0x00007fde9ed95ccc in ??? () at /lib64/libEGL_nvidia.so.0
#5  0x00007fde9ed61a29 in ??? () at /lib64/libEGL_nvidia.so.0
#6  0x00007fde9ed9b9fe in ??? () at /lib64/libEGL_nvidia.so.0
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 16 (Thread 0x7fde2cbe06c0 (LWP 4090)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7c2ac in __futex_abstimed_wait_common () at /lib64/libc.so.6
#3  0x00007fdeb3e7e97e in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#4  0x00007fde9ed95ccc in ??? () at /lib64/libEGL_nvidia.so.0
#5  0x00007fde9ed61a29 in ??? () at /lib64/libEGL_nvidia.so.0
#6  0x00007fde9ed9b9fe in ??? () at /lib64/libEGL_nvidia.so.0
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 15 (Thread 0x7fde427c96c0 (LWP 2660)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7bc84 in __syscall_cancel () at /lib64/libc.so.6
#3  0x00007fdeb3ef51de in poll () at /lib64/libc.so.6
#4  0x00007fde61da1f88 in poll_func () at /lib64/libpulse.so.0
#5  0x00007fde61d8b741 in pa_mainloop_poll () at /lib64/libpulse.so.0
#6  0x00007fde61d95fc1 in pa_mainloop_iterate () at /lib64/libpulse.so.0
#7  0x00007fde61d96080 in pa_mainloop_run () at /lib64/libpulse.so.0
#8  0x00007fde61da6f6d in thread () at /lib64/libpulse.so.0
#9  0x00007fde61d428fb in internal_thread_func () at /usr/lib64/pulseaudio/libpulsecommon-17.0.so
#10 0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#11 0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 14 (Thread 0x7fde737fb6c0 (LWP 2629)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7bc84 in __syscall_cancel () at /lib64/libc.so.6
#3  0x00007fdeb3ef5706 in ppoll () at /lib64/libc.so.6
#4  0x00007fdeb2e892e0 in g_main_context_iterate_unlocked.isra () at /lib64/libglib-2.0.so.0
#5  0x00007fdeb2e893a3 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#6  0x00007fdeb481e80d in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt6Core.so.6
#7  0x00007fdeb4509063 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt6Core.so.6
#8  0x00007fdeb462bdc6 in QThread::exec() () at /lib64/libQt6Core.so.6
#9  0x00007fdeb62d065e in QQuickPixmapReader::run() () at /lib64/libQt6Quick.so.6
#10 0x00007fdeb46d19ae in QThreadPrivate::start(void*) () at /lib64/libQt6Core.so.6
#11 0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#12 0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 13 (Thread 0x7fde60dea6c0 (LWP 2650)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7bc84 in __syscall_cancel () at /lib64/libc.so.6
#3  0x00007fdeb3f028d5 in epoll_wait () at /lib64/libc.so.6
#4  0x00007fde600c25f9 in impl_pollfd_wait () at /usr/lib64/spa-0.2/support/libspa-support.so
#5  0x00007fde600af6ff in loop_iterate () at /usr/lib64/spa-0.2/support/libspa-support.so
#6  0x00007fde6017b584 in do_loop () at /lib64/libpipewire-0.3.so.0
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 12 (Thread 0x7fde747fd6c0 (LWP 2627)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7c2ac in __futex_abstimed_wait_common () at /lib64/libc.so.6
#3  0x00007fdeb3e7e97e in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#4  0x00007fde9ed95ccc in ??? () at /lib64/libEGL_nvidia.so.0
#5  0x00007fde9ed61a29 in ??? () at /lib64/libEGL_nvidia.so.0
#6  0x00007fde9ed9b9fe in ??? () at /lib64/libEGL_nvidia.so.0
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 11 (Thread 0x7fde9f7ff6c0 (LWP 2453)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7bc84 in __syscall_cancel () at /lib64/libc.so.6
#3  0x00007fdeb3ef5706 in ppoll () at /lib64/libc.so.6
#4  0x00007fdeb2e892e0 in g_main_context_iterate_unlocked.isra () at /lib64/libglib-2.0.so.0
#5  0x00007fdeb2e893a3 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#6  0x00007fdeb481e80d in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt6Core.so.6
#7  0x00007fdeb4509063 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt6Core.so.6
#8  0x00007fdeb462bdc6 in QThread::exec() () at /lib64/libQt6Core.so.6
#9  0x00007fdeb4b47ae1 in QDBusConnectionManager::run() () at /lib64/libQt6DBus.so.6
#10 0x00007fdeb46d19ae in QThreadPrivate::start(void*) () at /lib64/libQt6Core.so.6
#11 0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#12 0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 10 (Thread 0x7fde2f7fe6c0 (LWP 2872)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7c2ac in __futex_abstimed_wait_common () at /lib64/libc.so.6
#3  0x00007fdeb3e7e97e in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#4  0x00007fde9ed95ccc in ??? () at /lib64/libEGL_nvidia.so.0
#5  0x00007fde9ed61a29 in ??? () at /lib64/libEGL_nvidia.so.0
#6  0x00007fde9ed9b9fe in ??? () at /lib64/libEGL_nvidia.so.0
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 9 (Thread 0x7fde73ffc6c0 (LWP 4066)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7c2ac in __futex_abstimed_wait_common () at /lib64/libc.so.6
#3  0x00007fdeb3e7e97e in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#4  0x00007fde9ed95ccc in ??? () at /lib64/libEGL_nvidia.so.0
#5  0x00007fde9ed61a29 in ??? () at /lib64/libEGL_nvidia.so.0
#6  0x00007fde9ed9b9fe in ??? () at /lib64/libEGL_nvidia.so.0
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 8 (Thread 0x7fde63fff6c0 (LWP 4085)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7c2ac in __futex_abstimed_wait_common () at /lib64/libc.so.6
#3  0x00007fdeb3e7eb88 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#4  0x00007fdeb46da1a3 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib64/libQt6Core.so.6
#5  0x00007fdeb462fe9c in QThreadPoolThread::run() () at /lib64/libQt6Core.so.6
#6  0x00007fdeb46d19ae in QThreadPrivate::start(void*) () at /lib64/libQt6Core.so.6
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 7 (Thread 0x7fde41cfc6c0 (LWP 2701)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7bc84 in __syscall_cancel () at /lib64/libc.so.6
#3  0x00007fdeb3ef5706 in ppoll () at /lib64/libc.so.6
#4  0x00007fdeb2e892e0 in g_main_context_iterate_unlocked.isra () at /lib64/libglib-2.0.so.0
#5  0x00007fdeb2e893a3 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#6  0x00007fdeb481e80d in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt6Core.so.6
#7  0x00007fdeb4509063 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt6Core.so.6
#8  0x00007fdeb462bdc6 in QThread::exec() () at /lib64/libQt6Core.so.6
#9  0x00007fde42891cb6 in KCupsConnection::run() () at /lib64/libkcups.so
#10 0x00007fdeb46d19ae in QThreadPrivate::start(void*) () at /lib64/libQt6Core.so.6
#11 0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#12 0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 6 (Thread 0x7fde615eb6c0 (LWP 2651)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7bc84 in __syscall_cancel () at /lib64/libc.so.6
#3  0x00007fdeb3ef5706 in ppoll () at /lib64/libc.so.6
#4  0x00007fdeb74c463d in wl_display_poll () at /lib64/libwayland-client.so.0
#5  0x00007fdeb74c99aa in wl_display_dispatch_queue_timeout () at /lib64/libwayland-client.so.0
#6  0x00007fdeb74c9a9f in wl_display_dispatch_queue () at /lib64/libwayland-client.so.0
#7  0x00007fdeb3dd10e6 in ClipboardThread::run() () at /lib64/libKF6GuiAddons.so.6
#8  0x00007fdeb46d19ae in QThreadPrivate::start(void*) () at /lib64/libQt6Core.so.6
#9  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#10 0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 5 (Thread 0x7fde7d5fd6c0 (LWP 2595)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7bc84 in __syscall_cancel () at /lib64/libc.so.6
#3  0x00007fdeb3ef5706 in ppoll () at /lib64/libc.so.6
#4  0x00007fdeb2e892e0 in g_main_context_iterate_unlocked.isra () at /lib64/libglib-2.0.so.0
#5  0x00007fdeb2e893a3 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#6  0x00007fdeb481e80d in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt6Core.so.6
#7  0x00007fdeb4509063 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt6Core.so.6
#8  0x00007fdeb462bdc6 in QThread::exec() () at /lib64/libQt6Core.so.6
#9  0x00007fdeb46d19ae in QThreadPrivate::start(void*) () at /lib64/libQt6Core.so.6
#10 0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#11 0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 4 (Thread 0x7fde9e9ff6c0 (LWP 2478)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7c2ac in __futex_abstimed_wait_common () at /lib64/libc.so.6
#3  0x00007fdeb3e7e97e in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#4  0x00007fdeb46da234 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib64/libQt6Core.so.6
#5  0x00007fdeb56f9340 in QtWaylandClient::EventThread::run() () at /lib64/libQt6WaylandClient.so.6
#6  0x00007fdeb46d19ae in QThreadPrivate::start(void*) () at /lib64/libQt6Core.so.6
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 3 (Thread 0x7fde9e1fe6c0 (LWP 2479)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7bc84 in __syscall_cancel () at /lib64/libc.so.6
#3  0x00007fdeb3ef51de in poll () at /lib64/libc.so.6
#4  0x00007fdeb56f93a2 in QtWaylandClient::EventThread::run() () at /lib64/libQt6WaylandClient.so.6
#5  0x00007fdeb46d19ae in QThreadPrivate::start(void*) () at /lib64/libQt6Core.so.6
#6  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#7  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 2 (Thread 0x7fde757ff6c0 (LWP 2622)):
#0  0x00007fdeb3e879a2 in __syscall_cancel_arch () at /lib64/libc.so.6
#1  0x00007fdeb3e7bc3c in __internal_syscall_cancel () at /lib64/libc.so.6
#2  0x00007fdeb3e7c2ac in __futex_abstimed_wait_common () at /lib64/libc.so.6
#3  0x00007fdeb3e7e97e in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libc.so.6
#4  0x00007fde9ed95ccc in ??? () at /lib64/libEGL_nvidia.so.0
#5  0x00007fde9ed61a29 in ??? () at /lib64/libEGL_nvidia.so.0
#6  0x00007fde9ed9b9fe in ??? () at /lib64/libEGL_nvidia.so.0
#7  0x00007fdeb3e7f464 in start_thread () at /lib64/libc.so.6
#8  0x00007fdeb3f025ec in __clone3 () at /lib64/libc.so.6

Thread 1 (Thread 0x7fdead6f4f00 (LWP 2427)):
[KCrash Handler]
#4  0x00007fdeb3e813cc in __pthread_kill_implementation () at /lib64/libc.so.6
#5  0x00007fdeb3e2715e in raise () at /lib64/libc.so.6
#6  0x00007fdeb3e0e6d0 in abort () at /lib64/libc.so.6
#7  0x00007fdeb441b204 in qAbort() () at /lib64/libQt6Core.so.6
#8  0x00007fdeb446fdf9 in qt_message(QtMsgType, QMessageLogContext const&, char const*, __va_list_tag*) () at /lib64/libQt6Core.so.6
#9  0x00007fdeb441c996 in QMessageLogger::fatal(char const*, ...) const () at /lib64/libQt6Core.so.6
#10 0x00007fde7c491ed0 in QtPrivate::QCallableObject<KScreen::WaylandOutputDevice::kde_output_device_v2_mode(kde_output_device_mode_v2*)::{lambda()#1}, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) [clone .lto_priv.0] [clone .cold] () at /usr/lib64/qt6/plugins/kf6/kscreen/KSC_KWayland.so
#11 0x00007fdeb456759a in void doActivate<false>(QObject*, int, void**) () at /lib64/libQt6Core.so.6
#12 0x00007fdeb4adb056 in ffi_call_unix64 () at /lib64/libffi.so.8
#13 0x00007fdeb4ad6d16 in ffi_call_int.lto_priv () at /lib64/libffi.so.8
#14 0x00007fdeb4ad97ae in ffi_call () at /lib64/libffi.so.8
#15 0x00007fdeb74c4feb in wl_closure_invoke.constprop () at /lib64/libwayland-client.so.0
#16 0x00007fdeb74c5e49 in dispatch_event () at /lib64/libwayland-client.so.0
#17 0x00007fdeb74c6243 in wl_display_dispatch_queue_pending () at /lib64/libwayland-client.so.0
#18 0x00007fdeb56f91f2 in QtWaylandClient::EventThread::readAndDispatchEvents() () at /lib64/libQt6WaylandClient.so.6
#19 0x00007fdeb56f1d71 in QtWaylandClient::QWaylandDisplay::flushRequests() () at /lib64/libQt6WaylandClient.so.6
#20 0x00007fdeb4558fcc in QObject::event(QEvent*) () at /lib64/libQt6Core.so.6
#21 0x00007fdeb6a3db9f in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt6Widgets.so.6
#22 0x00007fdeb44fc4e8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib64/libQt6Core.so.6
#23 0x00007fdeb44ffb09 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt6Core.so.6
#24 0x00007fdeb481efcf in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt6Core.so.6
#25 0x00007fdeb2e802a3 in g_main_context_dispatch_unlocked.lto_priv () at /lib64/libglib-2.0.so.0
#26 0x00007fdeb2e891f8 in g_main_context_iterate_unlocked.isra () at /lib64/libglib-2.0.so.0
#27 0x00007fdeb2e893a3 in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#28 0x00007fdeb481e80d in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt6Core.so.6
#29 0x00007fdeb4509063 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt6Core.so.6
#30 0x00007fdeb4504819 in QCoreApplication::exec() () at /lib64/libQt6Core.so.6
#31 0x000056435cc3794d in main ()

Reported using DrKonqi
Comment 1 Oliver Beard 2026-02-11 22:09:21 UTC 
It is likely that this is fixed with:

https://invent.kde.org/plasma/libkscreen/-/commit/3f643425e767a8144c9bcb013d273b5ac1920691
in Plasma 6.5.6 or Plasma 6.6.0

or possibly

https://invent.kde.org/plasma/libkscreen/-/commit/483576b1411cbb5e77ce08f25f94d6212ead8ccf
in Plasma 6.6.0

Please let us know if this continues to happen after updating to Plasma 6.6.0.