Bug 510347 - kwin crash on screen switch
Summary: kwin crash on screen switch
Status: RESOLVED FIXED
Alias: None
Product: kwin
Classification: Plasma
Component: general (other bugs)
Version First Reported In: 6.3.6
Platform: Debian unstable Linux
: NOR crash
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords: drkonqi
Depends on:
Blocks:
 
Reported: 2025-10-07 16:26 UTC by Alexander Elbs
Modified: 2025-10-07 16:40 UTC (History)
0 users

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report: https://crash-reports.kde.org/organizations/kde/issues/6565/events/6aa87e12f0f04f76a1f2326214c4bf74/

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Description Alexander Elbs 2025-10-07 16:26:12 UTC 
Application: kwin_wayland (6.3.6)

ApplicationNotResponding [ANR]: false
Qt Version: 6.9.2
Frameworks Version: 6.18.0
Operating System: Linux 6.16.9+deb14-amd64 x86_64
Windowing System: Wayland
Distribution: Debian GNU/Linux forky/sid
DrKonqi: 6.3.4 [CoredumpBackend]

-- Information about the crash:
Laptop is running with USB-C docking station with external monitors. Laptop display is configured to be off.
When unplugging the docking station the system switches to the internal laptop display. This crashes kwin_wayland.

Plugging the docking station back in: switches back to external monitors, disables internal one. No crash.

Only on unplug the crash is happening and it seems another precondition is a running firefox; without it (well just the firefox crash handler running), no crash.

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_wayland), signal: Segmentation fault


warning: Can't open file /home/ael/.cache/kwin/qmlcache/d66af88aeea73073361cb698fa7e62f3ed28f371.qmlc (deleted) during file-backed mapping note processing

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

warning: Can't open file /home/ael/.cache/plasma_theme_default.kcache (deleted) during file-backed mapping note processing

warning: Can't open file /home/ael/.cache/kwin/qmlcache/e6e408cbf4e149015c28d61b1fbe93f59973890d.qmlc (deleted) during file-backed mapping note processing

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

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

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

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

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

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

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

warning: Can't open file /memfd:JSGCHeap:QtQml (deleted) during file-backed mapping note processing
[New LWP 3053]
[New LWP 3263]
[New LWP 3261]
[New LWP 3186]
[New LWP 3268]
[New LWP 3285]
[New LWP 3269]
[New LWP 3294]
[New LWP 6789]
[New LWP 6780]
[New LWP 3295]
[New LWP 3287]
[New LWP 3266]
[New LWP 6788]
[New LWP 7440]
[New LWP 8803]
[New LWP 6787]
[New LWP 3296]
[New LWP 8806]
[New LWP 3262]
[New LWP 3265]
[New LWP 7439]
[New LWP 3264]
[New LWP 6738]
[New LWP 6779]
[New LWP 8804]
[New LWP 3267]
[New LWP 3286]
[New LWP 3284]
[New LWP 6778]
[New LWP 3288]
[New LWP 3293]
[New LWP 8805]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/bin/kwin_wayland --wayland-fd 7 --socket wayland-0 --xwayland-fd 8 --xwayland-fd 9 --xwayland-display :0 --xwayland-xauthority /run/user/1000/xauth_zmUxuy --xwayland'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f68c729e95c in ?? () from /lib/x86_64-linux-gnu/libc.so.6
[Current thread is 1 (Thread 0x7f68c168d2c0 (LWP 3053))]
Cannot QML trace cores :(
/usr/share/drkonqi/gdb/python/gdb_preamble/preamble.py:547: 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:564: 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 0x7f68c168d2c0 (LWP 3053))]

Thread 33 (Thread 0x7f683dff36c0 (LWP 8805)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c31d in pthread_cond_timedwait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68c7b22757 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#5  0x00007f68c7b248f6 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#6  0x00007f68c7b1c6e4 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 32 (Thread 0x7f68709156c0 (LWP 3293)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 31 (Thread 0x7f6873fff6c0 (LWP 3288)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c72996ad in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c730de6e in ppoll () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68c62c768c in ??? () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f68c62c7d20 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f68c7c04dc8 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#7  0x00007f68c79afe53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#8  0x00007f68c7a9896f in QThread::exec() () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#9  0x00007f68c7b1c6e4 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#10 0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#11 0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 30 (Thread 0x7f681e4856c0 (LWP 6778)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 29 (Thread 0x7f68966bb6c0 (LWP 3284)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 28 (Thread 0x7f6895eba6c0 (LWP 3286)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 27 (Thread 0x7f6897fff6c0 (LWP 3267)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 26 (Thread 0x7f68719f96c0 (LWP 8804)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c31d in pthread_cond_timedwait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68c7b22757 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#5  0x00007f68c7b248f6 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#6  0x00007f68c7b1c6e4 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 25 (Thread 0x7f681dc846c0 (LWP 6779)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 24 (Thread 0x7f6805de66c0 (LWP 6738)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 23 (Thread 0x7f68addfc6c0 (LWP 3264)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 22 (Thread 0x7f681ffff6c0 (LWP 7439)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 21 (Thread 0x7f68ad1fb6c0 (LWP 3265)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 20 (Thread 0x7f68aedfe6c0 (LWP 3262)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 19 (Thread 0x7f682effd6c0 (LWP 8806)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c31d in pthread_cond_timedwait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68c7b22757 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#5  0x00007f68c7b248f6 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#6  0x00007f68c7b1c6e4 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 18 (Thread 0x7f685affd6c0 (LWP 3296)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 17 (Thread 0x7f68178ee6c0 (LWP 6787)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 16 (Thread 0x7f683d7f26c0 (LWP 8803)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c31d in pthread_cond_timedwait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68c7b22757 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#5  0x00007f68c7b248f6 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#6  0x00007f68c7b1c6e4 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 15 (Thread 0x7f68168ec6c0 (LWP 7440)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 14 (Thread 0x7f68170ed6c0 (LWP 6788)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 13 (Thread 0x7f68ac9fa6c0 (LWP 3266)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 12 (Thread 0x7f68737fe6c0 (LWP 3287)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 11 (Thread 0x7f685b7fe6c0 (LWP 3295)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 10 (Thread 0x7f681cde16c0 (LWP 6780)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 9 (Thread 0x7f680dab86c0 (LWP 6789)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 8 (Thread 0x7f685bfff6c0 (LWP 3294)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 7 (Thread 0x7f6896ffd6c0 (LWP 3269)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c72996ad in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c730de6e in ppoll () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68c62c768c in ??? () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f68c62c7d20 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f68c7c04dc8 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#7  0x00007f68c79afe53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#8  0x00007f68c7a9896f in QThread::exec() () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#9  0x00007f68c7b1c6e4 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#10 0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#11 0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 6 (Thread 0x7f68956b96c0 (LWP 3285)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 5 (Thread 0x7f68977fe6c0 (LWP 3268)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c515 in pthread_cond_clockwait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68ca9226ac in ??? () at /lib/x86_64-linux-gnu/libkwin.so.6
#5  0x00007f68ca922e69 in ??? () at /lib/x86_64-linux-gnu/libkwin.so.6
#6  0x00007f68ca9230bd in ??? () at /lib/x86_64-linux-gnu/libkwin.so.6
#7  0x00007f68c72a1bc7 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c72a1c39 in pthread_once () at /lib/x86_64-linux-gnu/libc.so.6
#9  0x00007f68ca9201b8 in ??? () at /lib/x86_64-linux-gnu/libkwin.so.6
#10 0x00007f68c7a92175 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#11 0x00007f68c7b1c6e4 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#12 0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#13 0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 4 (Thread 0x7f68c0bff6c0 (LWP 3186)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c72996ad in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c730de6e in ppoll () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68c62c768c in ??? () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f68c62c7d20 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f68c7c04dc8 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#7  0x00007f68c79afe53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#8  0x00007f68c7a9896f in QThread::exec() () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#9  0x00007f68c7f7b31e in ??? () at /lib/x86_64-linux-gnu/libQt6DBus.so.6
#10 0x00007f68c7b1c6e4 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#11 0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#12 0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 3 (Thread 0x7f68af5ff6c0 (LWP 3261)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 2 (Thread 0x7f68ae5fd6c0 (LWP 3263)):
#0  0x00007f68c72a49ee in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f68c7299668 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f68c7299c9c in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#3  0x00007f68c729c158 in pthread_cond_wait () at /lib/x86_64-linux-gnu/libc.so.6
#4  0x00007f68b941041d in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#5  0x00007f68b93ca47c in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#6  0x00007f68b941034b in ??? () at /lib/x86_64-linux-gnu/libgallium-25.2.4-1.so
#7  0x00007f68c729cb7b in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#8  0x00007f68c731a7b8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6

Thread 1 (Thread 0x7f68c168d2c0 (LWP 3053)):
[KCrash Handler]
#4  0x00007f68ca9cdc7a in ??? () at /lib/x86_64-linux-gnu/libkwin.so.6
#5  0x00007f68c5db26ce in ??? () at /lib/x86_64-linux-gnu/libffi.so.8
#6  0x00007f68c5db197e in ??? () at /lib/x86_64-linux-gnu/libffi.so.8
#7  0x00007f68c5db21ab in ffi_call () at /lib/x86_64-linux-gnu/libffi.so.8
#8  0x00007f68c7e093db in ??? () at /lib/x86_64-linux-gnu/libwayland-server.so.0
#9  0x00007f68c7e03ce9 in ??? () at /lib/x86_64-linux-gnu/libwayland-server.so.0
#10 0x00007f68c7e06d92 in wl_event_loop_dispatch () at /lib/x86_64-linux-gnu/libwayland-server.so.0
#11 0x00007f68ca9d7a16 in KWin::Display::dispatchEvents() () at /lib/x86_64-linux-gnu/libkwin.so.6
#12 0x00007f68c79ff521 in ??? () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#13 0x00007f68c7a06028 in QSocketNotifier::activated(QSocketDescriptor, QSocketNotifier::Type, QSocketNotifier::QPrivateSignal) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#14 0x00007f68c7a088da in QSocketNotifier::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#15 0x00007f68c8bb9c48 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt6Widgets.so.6
#16 0x00007f68c79a6928 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#17 0x00007f68c7b1c914 in QEventDispatcherUNIXPrivate::activateSocketNotifiers() () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#18 0x00007f68c7b235f2 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#19 0x00007f68c8674d91 in QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt6Gui.so.6
#20 0x00007f68c79afe53 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#21 0x00007f68c79a9701 in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt6Core.so.6
#22 0x00005570715a380c in ??? ()
#23 0x00007f68c7233ca8 in ??? () at /lib/x86_64-linux-gnu/libc.so.6
#24 0x00007f68c7233d65 in __libc_start_main () at /lib/x86_64-linux-gnu/libc.so.6
#25 0x00005570715a5651 in ??? ()

Reported using DrKonqi
Comment 1 Bug Janitor Service 2025-10-07 16:33:44 UTC 
Thank you for the bug report!

However Plasma 6.3.6 no longer receives updates or maintenance from KDE; active versions are 6.4 or newer. Please upgrade to an active version as soon as your distribution makes it available to you. Plasma is a fast-moving project, and bugs in one version are often fixed in the next one.

If you need help with Plasma 6.3.6, please contact your distribution, who bears the responsibility of providing help for older releases that are no longer receiving updates from KDE.

If you can reproduce the issue after upgrading to an active version, feel free to re-open this bug report.