SUMMARY


STEPS TO REPRODUCE
Hard to produce.
Laptop / Desktop session were running more than 21 days.
I do daily docking between office and home, and switching headphone depending on docking enviroment.

The crash occurred when I started a MSTeams meeting within the running Citrix Workspace App (Remote Desktop to Windows Server  of one my customer for  a freelancing contract).
The crash occurred suddenly, as soon as MSTeams acquired the Bluetooth headphone, I could see  the on display message that headphone has switch its profile to some microphone profile.

Before starting the joining the conference, I was jumping to next music  and paused music in spotify in firefox using the MediaControls of the Keyboard.

OBSERVED RESULT
kwin has then crashed, desktop restarted.

Two Apps survived: Kate, and Konsole But all other important apps gone: Thunderbird, Notepad++ (CrossOver), Firefox, Chrome, KeePassXC, Signal, Clementine, Another Firefox with Spotify, freerdp sessions, and the Citrix client ("icaclient")

EXPECTED RESULT
If possible, let kwin  crash, but   other apps survive (the meeting icaclient and the other apps)

Please change component "Mulitscreen" if it makes sens might be not related to docking, I guess may by  related to bluetooth/sound/keyboard input and wayland .

This problem hasn't happened afterwards(starting multiple times test calls) and never before.
The CitrixClient is pretty stable. kwin normally crashes normally during  docking/undocking between 2x4k, 3xFullHD, SingleLaptop.


SOFTWARE/OS VERSIONS
Operating System: KDE neon User Edition
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.21.0
Qt Version: 6.10.1
Kernel Version: 6.17.11-061711-generic (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 PRO 7840U w/ Radeon 780M Graphics
Memory: 64 GiB of RAM (61,5 GiB usable)
Graphics Processor: AMD Radeon 780M
Manufacturer: LENOVO
Product Name: 21JV0025GE
System Version: ThinkPad Z13 Gen 2

ADDITIONAL INFORMATION
Unfortunately I do not have debug symbols, only this from syslog:

2026-01-09T11:11:03.191326+01:00 earth05 systemd-coredump[3142747]: Process 1560693 (kwin_wayland) of user 1000 dumped core.#012#012Module linux-vdso.so.1 from deb linux-6.17.11-061711.202512070002.amd64#012Module libnss_mymachines.so.2 from deb systemd-255.4-1ubuntu8.12.amd64#012Module libgomp.so.1 from deb gcc-14-14.2.0-4ubuntu2~24.04.amd64#012Module libgcc_s.so.1 from deb gcc-14-14.2.0-4ubuntu2~24.04.amd64#012Module libudev.so.1 from deb systemd-255.4-1ubuntu8.12.amd64#012Module libzstd.so.1 from deb libzstd-1.5.5+dfsg2-2build1.1.amd64#012Module libstdc++.so.6 from deb gcc-14-14.2.0-4ubuntu2~24.04.amd64#012Module libsystemd.so.0 from deb systemd-255.4-1ubuntu8.12.amd64#012Stack trace of thread 1560761:#012#0  0x00007c490629eb2c __pthread_kill_implementation (libc.so.6 + 0x9eb2c)#012#1  0x00007c490624527e __GI_raise (libc.so.6 + 0x4527e)#012#2  0x00007c4909d295f6 _ZN6KCrash19defaultCrashHandlerEi (libKF6Crash.so.6 + 0x95f6)#012#3  0x00007c4906245330 __restore_rt (libc.so.6 + 0x45330)#012#4  0x00007c4f0ffef6ff n/a (n/a + 0x0)#012#5  0x00007c49099220f5 _ZN4KWin8LibInput10Connection11handleEventEv (libkwin.so.6 + 0x5220f5)#012#6  0x00007c4906e9fc89 n/a (libQt6Core.so.6 + 0x49fc89)#012#7  0x00007c4906f42563 _ZN15QSocketNotifier9activatedE17QSocketDescriptorNS_4TypeENS_14QPrivateSignalE (libQt6Core.so.6 + 0x542563)#012#8  0x00007c4906f42700 _ZN15QSocketNotifier5eventEP6QEvent (libQt6Core.so.6 + 0x542700)#012#9  0x00007c490823d68d _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt6Widgets.so.6 + 0x63d68d)#012#10 0x00007c4906ed6ec0 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt6Core.so.6 + 0x4d6ec0)#012#11 0x00007c4906c8a544 n/a (libQt6Core.so.6 + 0x28a544)#012#12 0x00007c49053575c5 n/a (libglib-2.0.so.0 + 0x5d5c5)#012#13 0x00007c49053b6737 n/a (libglib-2.0.so.0 + 0xbc737)#012#14 0x00007c4905356a63 g_main_context_iteration (libglib-2.0.so.0 + 0x5ca63)#012#15 0x00007c4906c86fef _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x286fef)#012#16 0x00007c4906ee14e3 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x4e14e3)#012#17 0x00007c4906de0d84 _ZN7QThread4execEv (libQt6Core.so.6 + 0x3e0d84)#012#18 0x00007c4906da6f53 n/a (libQt6Core.so.6 + 0x3a6f53)#012#19 0x00007c490629caa4 start_thread (libc.so.6 + 0x9caa4)#012#20 0x00007c4906329c6c __clone3 (libc.so.6 + 0x129c6c)#012#012Stack trace of thread 1560752:#012#0  0x00007c4906298d71 __futex_abstimed_wait_common64 (libc.so.6 + 0x98d71)#012#1  0x00007c490629b7ed __pthread_cond_wait_common (libc.so.6 + 0x9b7ed)#012#2  0x00007c48f5b9359d n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x59359d)#012#3  0x00007c48f5b6054b n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x56054b)#012#4  0x00007c48f5b934cc n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x5934cc)#012#5  0x00007c490629caa4 start_thread (libc.so.6 + 0x9caa4)#012#6  0x00007c4906329c6c __clone3 (libc.so.6 + 0x129c6c)#012#012Stack trace of thread 1560718:#012#0  0x00007c490631b4fd __GI___poll (libc.so.6 + 0x11b4fd)#012#1  0x00007c49053b668e n/a (libglib-2.0.so.0 + 0xbc68e)#012#2  0x00007c4905356a63 g_main_context_iteration (libglib-2.0.so.0 + 0x5ca63)#012#3  0x00007c4906c86fef _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x286fef)#012#4  0x00007c4906ee14e3 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x4e14e3)#012#5  0x00007c4906de0d84 _ZN7QThread4execEv (libQt6Core.so.6 + 0x3e0d84)#012#6  0x00007c49070da54d n/a (libQt6DBus.so.6 + 0xa154d)#012#7  0x00007c4906da6f53 n/a (libQt6Core.so.6 + 0x3a6f53)#012#8  0x00007c490629caa4 start_thread (libc.so.6 + 0x9caa4)#012#9  0x00007c4906329c6c __clone3 (libc.so.6 + 0x129c6c)#012#012Stack trace of thread 1560751:#012#0  0x00007c4906298d71 __futex_abstimed_wait_common64 (libc.so.6 + 0x98d71)#012#1  0x00007c490629b7ed __pthread_cond_wait_common (libc.so.6 + 0x9b7ed)#012#2  0x00007c48f5b9359d n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x59359d)#012#3  0x00007c48f5b6054b n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x56054b)#012#4  0x00007c48f5b934cc n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x5934cc)#012#5  0x00007c490629caa4 start_thread (libc.so.6 + 0x9caa4)#012#6  0x00007c4906329c6c __clone3 (libc.so.6 + 0x129c6c)#012#012Stack trace of thread 1560753:#012#0  0x00007c4906298d71 __futex_abstimed_wait_common64 (libc.so.6 + 0x98d71)#012#1  0x00007c490629b7ed __pthread_cond_wait_common (libc.so.6 + 0x9b7ed)#012#2  0x00007c48f5b9359d n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x59359d)#012#3  0x00007c48f5b6054b n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x56054b)#012#4  0x00007c48f5b934cc n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x5934cc)#012#5  0x00007c490629caa4 start_thread (libc.so.6 + 0x9caa4)#012#6  0x00007c4906329c6c __clone3 (libc.so.6 + 0x129c6c)#012#012Stack trace of thread 1560755:#012#0  0x00007c4906298d71 __futex_abstimed_wait_common64 (libc.so.6 + 0x98d71)#012#1  0x00007c490629b7ed __pthread_cond_wait_common (libc.so.6 + 0x9b7ed)#012#2  0x00007c48f5b9359d n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x59359d)#012#3  0x00007c48f5b6054b n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x56054b)#012#4  0x00007c48f5b934cc n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x5934cc)#012#5  0x00007c490629caa4 start_thread (libc.so.6 + 0x9caa4)#012#6  0x00007c4906329c6c __clone3 (libc.so.6 + 0x129c6c)#012#012Stack trace of thread 1560757:#012#0  0x00007c4906298d71 __futex_abstimed_wait_common64 (libc.so.6 + 0x98d71)#012#1  0x00007c490629b7ed __pthread_cond_wait_common (libc.so.6 + 0x9b7ed)#012#2  0x00007c48f5b9359d n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x59359d)#012#3  0x00007c48f5b6054b n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x56054b)#012#4  0x00007c48f5b934cc n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x5934cc)#012#5  0x00007c490629caa4 start_thread (libc.so.6 + 0x9caa4)#012#6  0x00007c4906329c6c __clone3 (libc.so.6 + 0x129c6c)#012#012Stack trace of thread 1560756:#012#0  0x00007c4906298d71 __futex_abstimed_wait_common64 (libc.so.6 + 0x98d71)#012#1  0x00007c490629b7ed __pthread_cond_wait_common (libc.so.6 + 0x9b7ed)#012#2  0x00007c48f5b9359d n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x59359d)#012#3  0x00007c48f5b6054b n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x56054b)#012#4  0x00007c48f5b934cc n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x5934cc)#012#5  0x00007c490629caa4 start_thread (libc.so.6 + 0x9caa4)#012#6  0x00007c4906329c6c __clone3 (libc.so.6 + 0x129c6c)#012#012Stack trace of thread 1560754:#012#0  0x00007c4906298d71 __futex_abstimed_wait_common64 (libc.so.6 + 0x98d71)#012#1  0x00007c490629b7ed __pthread_cond_wait_common (libc.so.6 + 0x9b7ed)#012#2  0x00007c48f5b9359d n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x59359d)#012#3  0x00007c48f5b6054b n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x56054b)#012#4  0x00007c48f5b934cc n/a (libgallium-25.0.7-0ubuntu0.24.04.2.so + 0x5934cc)#012#5  0x00007c490629caa4 start_thread (libc.so.6 + 0x9caa4)#012#6  0x00007c4906329c6c __clone3 (libc.so.6 + 0x129c6c)#012#012Stack trace of thread 1560693:#012#0  0x00007c490631ba30 __GI_ppoll (libc.so.6 + 0x11ba30)#012#1  0x00007c4906da11e5 _Z12qt_safe_pollP6pollfdm14QDeadlineTimer (libQt6Core.so.6 + 0x3a11e5)#012#2  0x00007c4906da77b3 _ZN20QEventDispatcherUNIX13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x3a77b3)#012#3  0x00007c490796d532 _ZN23QUnixEventDispatcherQPA13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Gui.so.6 + 0x76d532)#012#4  0x00007c4906ee14e3 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x4e14e3)#012#5  0x00007c4906edb62f _ZN16QCoreApplication4execEv (libQt6Core.so.6 + 0x4db62f)#012#6  0x0000597e2a98374b n/a (kwin_wayland + 0x6174b)#012#7  0x00007c490622a1ca __libc_start_call_main (libc.so.6 + 0x2a1ca)#012#8  0x00007c490622a28b __libc_start_main_impl (libc.so.6 + 0x2a28b)#012#9  0x0000597e2a9898e5 n/a (kwin_wayland + 0x678e5)#012#012Stack trace of thread 1560792:#012#0  0x00007c4906298d71 __futex_abstimed_wait_common64 (libc.so.6 + 0x