Created attachment 171696 [details]
New crash information added by DrKonqi

DrKonqi auto-attaching complete backtrace.

Most of the time i have only VLC window on the extended screen. here are the system logs around the time i turned off the extended monitor:

```
Jul 15 22:16:45 host vlc[3041]: [00007a7830001200] mkv demux error: Dummy Element at unexpected position... corrupted file?
Jul 15 22:16:45 host vlc[3041]: [00007a7830001200] mkv demux error: Dummy element too large or misplaced at 7837824730... skipping to next upper element
Jul 15 22:17:52 host kernel: amdgpu 0000:03:00.0: [drm] REG_WAIT timeout 1us * 100000 tries - optc1_wait_for_state line:839
Jul 15 22:17:52 host kernel: amdgpu 0000:03:00.0: [drm] REG_WAIT timeout 1us * 100000 tries - optc1_wait_for_state line:839
Jul 15 22:17:52 host kernel: amdgpu 0000:03:00.0: [drm] REG_WAIT timeout 1us * 100000 tries - optc1_wait_for_state line:839
Jul 15 22:17:52 host plasmashell[1127]: KCrash: Application 'plasmashell' crashing... crashRecursionCounter = 2
Jul 15 22:17:52 host systemd-coredump[6047]: Process 1127 (plasmashell) of user 1000 terminated abnormally with signal 11/SEGV, processing...
Jul 15 22:17:52 host systemd[1]: Created slice Slice /system/drkonqi-coredump-processor.
Jul 15 22:17:52 host systemd[1]: Created slice Slice /system/systemd-coredump.
Jul 15 22:17:52 host systemd[1]: Started Process Core Dump (PID 6047/UID 0).
Jul 15 22:17:52 host systemd[1]: Started Pass systemd-coredump journal entries to relevant user for potential DrKonqi handling.
Jul 15 22:17:53 host org_kde_powerdevil[1164]: Sleep event. connector=card1-HDMI-A-1, dref not set
Jul 15 22:17:53 host org_kde_powerdevil[1164]: Delaying 6 seconds to avoid a false disconnect/connect sequence...
Jul 15 22:17:54 host systemd-coredump[6048]: [🡕] Process 1127 (plasmashell) of user 1000 dumped core.
Jul 15 22:17:54 host systemd[1]: systemd-coredump@0-6047-0.service: Deactivated successfully.
Jul 15 22:17:54 host systemd[892]: plasma-plasmashell.service: Main process exited, code=dumped, status=11/SEGV
Jul 15 22:17:54 host systemd[892]: plasma-plasmashell.service: Failed with result 'core-dump'.
Jul 15 22:17:55 host drkonqi-coredump-processor[6049]: "/usr/bin/plasmashell" 1127 "/var/lib/systemd/coredump/core.plasmashell.1000.283ea22436244a888946b7f65a9ba1fb.1127.1721092672000000.zst"
Jul 15 22:17:55 host systemd[892]: Started Launch DrKonqi for a systemd-coredump crash (PID 6049/UID 0).
Jul 15 22:17:55 host systemd[1]: drkonqi-coredump-processor@0-6047-0.service: Deactivated successfully.
Jul 15 22:17:55 host systemd[892]: plasma-plasmashell.service: Scheduled restart job, restart counter is at 1.
Jul 15 22:17:55 host systemd[892]: Starting KDE Plasma Workspace...
...
««i've been seeing this C locale errors.. my system should be all UTF8»»
Jul 15 22:17:55 host drkonqi[6084]: Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
                                     Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
                                     If this causes problems, reconfigure your locale. See the locale(1) manual
                                     for more information.
...
Jul 15 22:17:55 host plasmashell[6083]: file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:195:25: QML FolderViewDropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth"
...
Jul 15 22:17:55 host plasmashell[6083]: Toolbox not loading, toolbox package is either invalid or disabled.
Jul 15 22:17:55 host systemd[1]: Started Hostname Service.
...
Jul 15 22:17:57 host drkonqi-coredump-launcher[6268]:   boot_time = datetime.utcfromtimestamp(psutil.boot_time()).strftime('%Y-%m-%dT%H:%M:%S')
Jul 15 22:17:57 host systemd[1]: Starting Time & Date Service...
Jul 15 22:17:57 host systemd[1]: Started Time & Date Service.
Jul 15 22:17:57 host plasmashell[6083]: file:///usr/share/plasma/plasmoids/org.kde.plasma.keyboardindicator/contents/ui/main.qml:61:13: Unable to assign [undefined] to bool
Jul 15 22:17:57 host drkonqi-coredump-launcher[6268]: /usr/share/drkonqi/gdb/python/gdb_preamble/preamble.py:532: 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).
...
Jul 15 22:17:57 host drkonqi-coredump-launcher[6268]:   'timestamp': datetime.utcnow().isoformat(),
Jul 15 22:18:00 host org_kde_powerdevil[1164]: DRM connectors with newly disconnected displays: card1-HDMI-A-1
Jul 15 22:18:00 host org_kde_powerdevil[1164]: Removing connected display with bus Display_Path[/dev/i2c-4], drm connector card1-HDMI-A-1
Jul 15 22:18:02 host org_kde_powerdevil[1164]: Emitting DDCA_Display_Status_Event( 8064.216:  DDCA_EVENT_DPMS_ASLEEP, card1-HDMI-A-1, dref: Display_Ref[NULL], io_path:/dev/i2c-4]
Jul 15 22:18:02 host org_kde_powerdevil[1164]: Executed 1 registered callbacks.
Jul 15 22:18:02 host org_kde_powerdevil[1164]: Emitting DDCA_Display_Status_Event( 8071.217:  DDCA_EVENT_DISPLAY_DISCONNECTED, card1-HDMI-A-1, dref: Display_Ref[NULL], io_path:/dev/i2c-4]
Jul 15 22:18:02 host org_kde_powerdevil[1164]: Executed 1 registered callbacks.
Jul 15 22:18:12 host wpa_supplicant[871]: wlp1s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-60 noise=-96 txrate=154800
Jul 15 22:18:27 host systemd[1]: systemd-hostnamed.service: Deactivated successfully.
Jul 15 22:18:27 host systemd[1]: systemd-timedated.service: Deactivated successfully.
Jul 15 22:18:37 host wpa_supplicant[871]: wlp1s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-59 noise=-96 txrate=154800
Jul 15 22:18:55 host plasma_waitforname[6182]: org.kde.plasma.waitforname: WaitForName: Service was not registered within timeout
Jul 15 22:18:55 host systemd[892]: dbus-:1.2-org.kde.KSplash@2.service: Main process exited, code=exited, status=1/FAILURE
Jul 15 22:18:55 host systemd[892]: dbus-:1.2-org.kde.KSplash@2.service: Failed with result 'exit-code'.
Jul 15 22:19:33 host kernel: ath11k_pci 0000:01:00.0: msdu_done bit in attention is not set
Jul 15 22:20:02 host systemd[1]: Started dbus-:1.3-org.kde.powerdevil.backlighthelper@1.service.
Jul 15 22:20:12 host systemd[1]: dbus-:1.3-org.kde.powerdevil.backlighthelper@1.service: Deactivated successfully.
Jul 15 22:21:33 host systemd[1]: Started dbus-:1.3-org.kde.powerdevil.backlighthelper@2.service.
Jul 15 22:21:34 host drkonqi[6084]: qrc:/ui/DeveloperPage.qml:12:1: QML DeveloperPage: Created graphical object was not placed in the graphics scene.
Jul 15 22:21:34 host drkonqi[6084]: qml: 2
Jul 15 22:21:34 host drkonqi[6084]: qml: 2
Jul 15 22:21:34 host drkonqi[6084]: qml: usefulness
Jul 15 22:21:34 host drkonqi[6084]: qml: 1
Jul 15 22:21:34 host drkonqi[6084]: qml: 4
Jul 15 22:21:43 host systemd[1]: dbus-:1.3-org.kde.powerdevil.backlighthelper@2.service: Deactivated successfully.
Jul 15 22:21:55 host drkonqi[6084]: qml: 1
Jul 15 22:21:55 host drkonqi[6084]: qml: 2
Jul 15 22:21:55 host drkonqi[6084]: Core already exists, returning early
Jul 15 22:21:56 host wpa_supplicant[871]: wlp1s0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-67 noise=-96 txrate=137600
Jul 15 22:21:58 host drkonqi[6084]: qrc:/ui/WelcomePage.qml:11:1: QML WelcomePage: Created graphical object was not placed in the graphics scene.
Jul 15 22:22:04 host drkonqi-coredump-launcher[6432]: warning: Can't open file /memfd:pulseaudio (deleted) during file-backed mapping note processing
...
Jul 15 22:22:05 host drkonqi[6084]: qrc:/ui/ContextPage.qml:11:1: QML ContextPage: Created graphical object was not placed in the graphics scene.
Jul 15 22:22:17 host drkonqi[6084]: qrc:/ui/BacktracePage.qml:10:1: QML BacktracePage: Created graphical object was not placed in the graphics scene.
Jul 15 22:22:17 host drkonqi[6084]: qml: 1
Jul 15 22:22:17 host drkonqi[6084]: qml: 2
Jul 15 22:22:17 host drkonqi[6084]: qml: usefulness
Jul 15 22:22:17 host drkonqi[6084]: qml: 1
Jul 15 22:22:17 host drkonqi[6084]: qml: 4
Jul 15 22:25:15 host wpa_supplicant[871]: wlp1s0: WPA: Group rekeying completed with d8:ec:5e:80:ad:64 [GTK=CCMP]
Jul 15 22:28:53 host doas[2914]: pam_unix(doas:session): session closed for user root
Jul 15 22:28:55 host kwin_wayland[925]: kwin_xwl: Could not create a source from 0x7837c400f250 0
Jul 15 22:28:56 host systemd[892]: Started XTerm.
Jul 15 22:28:56 host xterm[6723]: Warning: locale not supported by C library, locale unchanged
Jul 15 22:28:56 host xterm[6723]: Warning: Actions not found: create-menu, insert-selection, select-start, select-extend, select-end, print-everything, larger-vt-font, smaller-vt-font
Jul 15 22:28:56 host xterm[6723]: Warning: Actions not found: create-menu, print-everything
Jul 15 22:28:56 host xterm[6723]: Warning: Actions not found: create-menu, print-everything
Jul 15 22:28:56 host kwin_wayland[925]: kf.windowsystem: static bool KX11Extras::mapViewport() may only be used on X11
Jul 15 22:32:05 host dbus-broker-launch[726]: Activation request for 'org.freedesktop.Avahi' failed: The systemd unit 'dbus-org.freedesktop.Avahi.service' could not be found.
Jul 15 22:32:13 host systemd[892]: Started XTerm.
Jul 15 22:32:13 host xterm[7038]: Warning: locale not supported by C library, locale unchanged
Jul 15 22:32:13 host xterm[7038]: Warning: Actions not found: create-menu, insert-selection, select-start, select-extend, select-end, print-everything, larger-vt-font, smaller-vt-font
Jul 15 22:32:13 host xterm[7038]: Warning: Actions not found: create-menu, print-everything
Jul 15 22:32:13 host xterm[7038]: Warning: Actions not found: create-menu, print-everything
Jul 15 22:32:13 host kwin_wayland[925]: kf.windowsystem: static bool KX11Extras::mapViewport() may only be used on X11
Jul 15 22:32:16 host systemd[1]: Starting Fingerprint Authentication Daemon...
Jul 15 22:32:16 host systemd[1]: Started Fingerprint Authentication Daemon.
Jul 15 22:32:17 host doas[7079]: pam_systemd_home(doas:account): New sd-bus connection (system-bus-pam-systemd-home-7079) opened.
Jul 15 22:32:17 host doas[7079]: pam_unix(doas:session): session opened for user root(uid=0) by gcb(uid=1000)
Jul 15 22:32:17 host doas[7088]: gcb ran command /bin/bash as root from /home/gcb
Jul 15 22:32:48 host systemd[1]: fprintd.service: Deactivated successfully.
Jul 15 22:32:51 host systemd[892]: Starting Accessibility services bus...
Jul 15 22:32:51 host systemd[892]: Started Accessibility services bus.
Jul 15 22:32:51 host at-spi-bus-launcher[7359]: Policy to allow eavesdropping in /usr/share/defaults/at-spi2/accessibility.conf +15: Eavesdropping is deprecated and ignored
Jul 15 22:32:51 host at-spi-bus-launcher[7359]: Policy to allow eavesdropping in /usr/share/defaults/at-spi2/accessibility.conf +17: Eavesdropping is deprecated and ignored
Jul 15 22:32:51 host dbus-broker-launch[7359]: Ready
Jul 15 22:34:31 host kwin_wayland[925]: kwin_xwl: Could not create a source from 0x641aea0db3d0 0
Jul 15 22:35:05 host wpa_supplicant[871]: wlp1s0: WPA: Group rekeying completed with d8:ec:5e:80:ad:64 [GTK=CCMP]
Jul 15 22:35:43 host drkonqi-coredump-launcher[6432]: /usr/share/drkonqi/gdb/python/gdb_preamble/preamble.py:515: DeprecationWarning: datetime.datetime.utcfromtimestamp() is deprecated and scheduled for r
emoval in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.fromtimestamp(timestamp, datetime.UTC).
Jul 15 22:35:43 host drkonqi-coredump-launcher[6432]:   boot_time = datetime.utcfromtimestamp(psutil.boot_time()).strftime('%Y-%m-%dT%H:%M:%S')
Jul 15 22:35:43 host systemd[1]: Starting Hostname Service...
```

Thank you for the bug report! This issue has already been filed and was determined to be an upstream bug in Qt; please see that bug report for updates on a fix.

*** This bug has been marked as a duplicate of bug 489180 ***