Is there actually a crash, whose backtrace you didn't attach?

(In reply to Nate Graham from comment #1)
> Is there actually a crash, whose backtrace you didn't attach?

Sorry, I am still new into Linux. I used Ubuntu for about a year and recently switched to Debian 12. I did log in and out few times today to force some lines to appear in shell after logging out (things that I saw earlier, but did not attach backtrace to them - hope that it will shed some more light on the matter). P.S. Please let me know if there is any sensitive info that I should edit out. P.S.2: In addition to of what is visible below, there was a lot of repeating info about hardware random number generator failing (AMD CPU's related well known bug). I did cut it out again to let you read more easily (sorry it still a lot of lines, I was even thinking about editing out lines that appear multiple times, but probably it will be better to leave them as they are). 
user@computer:~$ dbus-run-session startplasma-wayland
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.systemd1' requested by ':1.0' (uid=1000 pid=8264 comm="startplasma-wayland")
dbus-daemon[8263]: [session uid=1000 pid=8263] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.systemd1' requested by ':1.0' (uid=1000 pid=8264 comm="startplasma-wayland")
dbus-daemon[8263]: [session uid=1000 pid=8263] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.systemd1' requested by ':1.0' (uid=1000 pid=8264 comm="startplasma-wayland")
dbus-daemon[8263]: [session uid=1000 pid=8263] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.systemd1' requested by ':1.0' (uid=1000 pid=8264 comm="startplasma-wayland")
dbus-daemon[8263]: [session uid=1000 pid=8263] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.systemd1' requested by ':1.0' (uid=1000 pid=8264 comm="startplasma-wayland")
dbus-daemon[8263]: [session uid=1000 pid=8263] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.systemd1' requested by ':1.0' (uid=1000 pid=8264 comm="startplasma-wayland")
dbus-daemon[8263]: [session uid=1000 pid=8263] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.systemd1' requested by ':1.0' (uid=1000 pid=8264 comm="startplasma-wayland")
dbus-daemon[8263]: [session uid=1000 pid=8263] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.kde.KSplash' requested by ':1.0' (uid=1000 pid=8264 comm="startplasma-wayland")
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.systemd1' requested by ':1.0' (uid=1000 pid=8264 comm="startplasma-wayland")
dbus-daemon[8263]: [session uid=1000 pid=8263] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.systemd1' requested by ':1.3' (uid=1000 pid=8291 comm="/usr/bin/kwin_wayland_wrapper --xwayland")
dbus-daemon[8263]: [session uid=1000 pid=8263] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1
kdeinit5: preparing to launch '/usr/lib/x86_64-linux-gnu/libexec/kf5/klauncher'
kdeinit5: Launched KLauncher, pid = 8302, result = 0
No backend specified, automatically choosing drm
OpenGL vendor string:                   AMD
OpenGL renderer string:                 AMD Radeon RX 6600 (navi23, LLVM 15.0.6, DRM 3.49, 6.1.0-12-amd64)
OpenGL version string:                  4.6 (Core Profile) Mesa 22.3.6
OpenGL shading language version string: 4.60
Driver:                                 Unknown
GPU class:                              Unknown
OpenGL version:                         4.6
GLSL version:                           4.60
Mesa version:                           22.3.6
Linux kernel version:                   6.1
Requires strict binding:                no
GLSL shaders:                           yes
Texture NPOT support:                   yes
Virtual Machine:                        no
kwin_xkbcommon: XKB: inet:334:58: unrecognized keysym "XF86EmojiPicker"
Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
dbus-daemon[8263]: [session uid=1000 pid=8263] Successfully activated service 'org.kde.KSplash'
kdeinit5: opened connection to :1
The XKEYBOARD keymap compiler (xkbcomp) reports:
> Warning:          Unsupported maximum keycode 708, clipping.
>                   X11 cannot support keycodes above 255.
I2023-09-26 20:17:44.504851 instance.cpp:1270] Override Enabled Addons: {}
I2023-09-26 20:17:44.504881 instance.cpp:1271] Override Disabled Addons: {m17n}
Errors from xkbcomp are not fatal to the X server
I2023-09-26 20:17:44.507747 addonmanager.cpp:191] Loaded addon xcb
I2023-09-26 20:17:44.508889 addonmanager.cpp:191] Loaded addon quickphrase
I2023-09-26 20:17:44.509007 addonmanager.cpp:191] Loaded addon imselector
I2023-09-26 20:17:44.514013 addonmanager.cpp:191] Loaded addon keyboard
I2023-09-26 20:17:44.514238 addonmanager.cpp:191] Loaded addon keyman
I2023-09-26 20:17:44.514571 addonmanager.cpp:191] Loaded addon luaaddonloader
I2023-09-26 20:17:44.515260 addonmanager.cpp:191] Loaded addon dbus
I2023-09-26 20:17:44.515637 addonmanager.cpp:191] Loaded addon dbusfrontend
I2023-09-26 20:17:44.517641 addonmanager.cpp:191] Loaded addon fcitx4frontend
I2023-09-26 20:17:44.518139 addonmanager.cpp:191] Loaded addon imeapi
I2023-09-26 20:17:44.520351 addonmanager.cpp:191] Loaded addon ibusfrontend
I2023-09-26 20:17:44.520792 addonmanager.cpp:191] Loaded addon xim
I2023-09-26 20:17:44.522487 addonmanager.cpp:191] Loaded addon wayland
I2023-09-26 20:17:44.523162 addonmanager.cpp:191] Loaded addon clipboard
I2023-09-26 20:17:44.523358 addonmanager.cpp:191] Loaded addon unicode
I2023-09-26 20:17:44.523683 addonmanager.cpp:191] Loaded addon waylandim
I2023-09-26 20:17:44.523843 inputmethodmanager.cpp:198] Found 0 input method(s) in addon keyman
Initializing  "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_fonts.so"
Initializing  "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_style.so"
kdeinit5: Got SETENV 'GTK_RC_FILES=/etc/gtk/gtkrc:/home/user/.gtkrc:/home/user/.config/gtkrc' from launcher.
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.systemd1' requested by ':1.12' (uid=1000 pid=8348 comm="/usr/bin/kcminit_startup")
kdeinit5: Got SETENV 'GTK2_RC_FILES=/etc/gtk-2.0/gtkrc:/home/user/.gtkrc-2.0:/home/user/.config/gtkrc-2.0' from launcher.
dbus-daemon[8263]: [session uid=1000 pid=8263] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1
Initializing  "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_mouse.so"
org.kde.plasma.session: process job  "kcminit_startup" finished with exit code  0
I2023-09-26 20:17:44.548874 inputmethodmanager.cpp:198] Found 713 input method(s) in addon keyboard
I2023-09-26 20:17:44.559981 addonmanager.cpp:191] Loaded addon kimpanel
kwin_xkbcommon: XKB: inet:334:58: unrecognized keysym "XF86EmojiPicker"
The XKEYBOARD keymap compiler (xkbcomp) reports:
> Warning:          Unsupported maximum keycode 708, clipping.
>                   X11 cannot support keycodes above 255.
Errors from xkbcomp are not fatal to the X server
I2023-09-26 20:17:44.578045 addonmanager.cpp:191] Loaded addon classicui
I2023-09-26 20:17:44.578360 addonmanager.cpp:191] Loaded addon notificationitem
I2023-09-26 20:17:44.578629 addonmanager.cpp:191] Loaded addon notifications
I2023-09-26 20:17:44.579508 kimpanel.cpp:112] Kimpanel new owner:
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.kde.ActivityManager' requested by ':1.13' (uid=1000 pid=8370 comm="/usr/bin/kded5")
dbus-daemon[8263]: [session uid=1000 pid=8263] Successfully activated service 'org.kde.ActivityManager'
org.kde.libkbolt: Failed to connect to Bolt manager DBus interface: The name org.wicd.daemon was not provided by any .service files
org.kde.bolt.kded: Couldn't connect to Bolt DBus daemon
Installing the delayed initialization callback.
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='ca.desrt.dconf' requested by ':1.15' (uid=1000 pid=8370 comm="/usr/bin/kded5")
dbus-daemon[8263]: [session uid=1000 pid=8263] Successfully activated service 'ca.desrt.dconf'
Qt: Session management error: networkIdsList argument is NULL
kdeinit5: Got SETENV 'SESSION_MANAGER=local/computer:@/tmp/.ICE-unix/8385,unix/computer:/tmp/.ICE-unix/8385' from launcher.
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.systemd1' requested by ':1.17' (uid=1000 pid=8385 comm="/usr/bin/ksmserver --no-lockscreen")
kdeinit5: Got SETENV 'SESSION_MANAGER=local/computer:@/tmp/.ICE-unix/8385,unix/computer:/tmp/.ICE-unix/8385' from launcher.
dbus-daemon[8263]: [session uid=1000 pid=8263] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1
xsettingsd: Loaded 0 settings from /home/user/.config/xsettingsd/xsettingsd.conf
Initializing  "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_touchpad.so"
Initializing  "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_kgamma.so"
xsettingsd: Loaded 13 settings from /home/user/.config/xsettingsd/xsettingsd.conf
xsettingsd: Created window 0xe00001 on screen 0 with timestamp 777639
xsettingsd: Selection _XSETTINGS_S0 is owned by 0x0
xsettingsd: Took ownership of selection _XSETTINGS_S0
Xlib XKB extension major= 1  minor= 0
Baloo File Indexing has been disabled
xsettingsd: Reloading configuration
xsettingsd: Loaded 13 settings from /home/user/.config/xsettingsd/xsettingsd.conf
xsettingsd: Reloading configuration
xsettingsd: Loaded 13 settings from /home/user/.config/xsettingsd/xsettingsd.conf
xsettingsd: Reloading configuration
xsettingsd: Loaded 13 settings from /home/user/.config/xsettingsd/xsettingsd.conf
xsettingsd: Reloading configuration
xsettingsd: Loaded 13 settings from /home/user/.config/xsettingsd/xsettingsd.conf
xsettingsd: Reloading configuration
xsettingsd: Loaded 13 settings from /home/user/.config/xsettingsd/xsettingsd.conf
kf.kio.gui: "Could not find the program 'start-pulseaudio-x11'"
KXMessages used on non-X11 platform! This is an application bug.
New PolkitAgentListener  0x55c3985748c0
Adding new listener  PolkitQt1::Agent::Listener(0x7fc27000ba40) for  0x55c3985748c0
Listener online
X server XKB extension major= 1  minor= 0
Checking screens: available: (QScreen(0x5566d6150370, name="DP-1"), QScreen(0x5566d614a670, name="HDMI-A-1")) redundant: QHash() fake: QSet() all: (QScreen(0x5566d6150370, name="DP-1"), QScreen(0x5566d614a670, name="HDMI-A-1"))
Authentication agent result: true
kf.plasma.quick: Applet preload policy set to 1
org.kde.powerdevil: org.kde.powerdevil.chargethresholdhelper.getthreshold failed "Charge thresholds are not supported by the kernel for this hardware"
xsettingsd: Reloading configuration
xsettingsd: Loaded 13 settings from /home//.config/xsettingsd/xsettingsd.conf
xsettingsd: Reloading configuration
xsettingsd: Loaded 13 settings from /home/user/.config/xsettingsd/xsettingsd.conf
xsettingsd: Reloading configuration
xsettingsd: Loaded 13 settings from /home/user/.config/xsettingsd/xsettingsd.conf
xsettingsd: Reloading configuration
xsettingsd: Loaded 13 settings from /home/user/.config/xsettingsd/xsettingsd.conf
xsettingsd: Reloading configuration
xsettingsd: Loaded 13 settings from /home/user/.config/xsettingsd/xsettingsd.conf
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.Notifications' requested by ':1.30' (uid=1000 pid=8488 comm="/usr/lib/x86_64-linux-gnu/libexec/kdeconnectd")
kup.daemon: "Kup is not enabled, enable it from the system settings module. You can do that by running kcmshell5 kup"
org.kde.powerdevil: org.kde.powerdevil.backlighthelper.brightness failed
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
org.kde.plasma.dataengine.geolocation: gpsd not found
"location"
Delayed initialization.
Reloading the khotkeys configuration
Version 2 File!
true
Imported file "/usr/share/khotkeys/defaults.khotkeys"
Imported file "/usr/share/khotkeys/kde32b1.khotkeys"
Imported file "/usr/share/khotkeys/konqueror_gestures_kde321.khotkeys"
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.bluez.obex' requested by ':1.13' (uid=1000 pid=8370 comm="/usr/bin/kded5")
dbus-daemon[8263]: [session uid=1000 pid=8263] Successfully activated service 'org.bluez.obex'
QDBusAbstractAdaptor: Cannot relay signal KDEDModule::moduleDeleted(KDEDModule*): Pointers are not supported: KDEDModule*
Registering ":1.29/StatusNotifierItem" to system tray
Known activities: ("f187fe04-941b-4a8c-b904-197af8cd7f17")
Registering ":1.28/StatusNotifierItem" to system tray
QObject::connect: No such slot DesktopProtocol::_k_slotRedirection(KIO::Job *, QUrl)
kscreen.kded: PowerDevil SuspendSession action not available!
QObject::connect: No such slot DesktopProtocol::_k_slotRedirection(KIO::Job *, QUrl)
Initializing  "/usr/lib/x86_64-linux-gnu/qt5/plugins/plasma/kcms/systemsettings/kcm_fonts.so"
QObject::connect: No such slot DesktopProtocol::_k_slotRedirection(KIO::Job *, QUrl)
QObject::connect: No such slot DesktopProtocol::_k_slotRedirection(KIO::Job *, QUrl)
QObject::connect: No such slot DesktopProtocol::_k_slotRedirection(KIO::Job *, QUrl)
QObject::connect: No such slot DesktopProtocol::_k_slotRedirection(KIO::Job *, QUrl)
QObject::connect: No such slot DesktopProtocol::_k_slotRedirection(KIO::Job *, QUrl)
QObject::connect: No such slot DesktopProtocol::_k_slotRedirection(KIO::Job *, QUrl)
QObject::connect: No such slot DesktopProtocol::_k_slotRedirection(KIO::Job *, QUrl)
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:534:9: QML Label: Binding loop detected for property "height"
file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:499:13: QML Label: Binding loop detected for property "height"
Trying to use rootObject before initialization is completed, whilst using setInitializationDelayed. Forcing completion
file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:499:13: QML Label: Binding loop detected for property "height"
file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:534:9: QML Label: Binding loop detected for property "height"
file:///usr/share/plasma/plasmoids/org.kde.plasma.digitalclock/contents/ui/DigitalClock.qml:556:5: QML Label: Binding loop detected for property "height"
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
Cyclic dependency detected between "file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/global/Globals.qml" and "file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/NotificationHeader.qml"
Cyclic dependency detected between "file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/global/Globals.qml" and "file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/ThumbnailStrip.qml"
dbus-daemon[8263]: [session uid=1000 pid=8263] Successfully activated service 'org.freedesktop.Notifications'
libkcups: CUPS-Get-Printers last error: 1030 No destinations added.
libkcups: Create-Printer-Subscriptions last error: 0 successful-ok
libkcups: Get-Jobs last error: 0 successful-ok
libkcups: Get-Jobs last error: 0 successful-ok
org.kde.powerdevil: Handle button events action could not check for screen configuration
org.kde.powerdevil: The profile  "AC" tried to activate "DimDisplay" a non-existent action. This is usually due to an installation problem, a configuration problem, or because the action is not supported
file:///usr/share/plasma/plasmoids/org.kde.kscreen/contents/ui/main.qml:30:5: Unable to assign [undefined] to bool
file:///usr/share/plasma/plasmoids/org.kde.plasma.networkmanagement/contents/ui/main.qml:95: TypeError: Cannot read property 'airplaneModeAvailable' of null
org.kde.powerdevil: org.kde.powerdevil.chargethresholdhelper.getthreshold failed "Charge thresholds are not supported by the kernel for this hardware"
libkcups: 0
libkcups: 0
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/extras/PlaceholderMessage.qml:238:5: QML Heading: Binding loop detected for property "verticalAlignment"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/extras/PlaceholderMessage.qml:238:5: QML Heading: Binding loop detected for property "verticalAlignment"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/extras/PlaceholderMessage.qml:238:5: QML Heading: Binding loop detected for property "verticalAlignment"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/extras/PlaceholderMessage.qml:238:5: QML Heading: Binding loop detected for property "verticalAlignment"
kf5idletime_wayland: This plugin does not support polling idle time
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/extras/PlaceholderMessage.qml:238:5: QML Heading: Binding loop detected for property "verticalAlignment"
QFont::setPointSizeF: Point size <= 0 (0.000000), must be greater than 0
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/extras/PlaceholderMessage.qml:238:5: QML Heading: Binding loop detected for property "verticalAlignment"
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.portal.Desktop' requested by ':1.39' (uid=1000 pid=8812 comm="/home/user/.local/bin/firefox-dev")
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.portal.Documents' requested by ':1.41' (uid=1000 pid=8864 comm="/usr/libexec/xdg-desktop-portal")
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.impl.portal.PermissionStore' requested by ':1.42' (uid=1000 pid=8871 comm="/usr/libexec/xdg-document-portal")
dbus-daemon[8263]: [session uid=1000 pid=8263] Successfully activated service 'org.freedesktop.impl.portal.PermissionStore'
dbus-daemon[8263]: [session uid=1000 pid=8263] Successfully activated service 'org.freedesktop.portal.Documents'
Ignoring invalid max threads value 4294967295 > max (100000).
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.impl.portal.desktop.gtk' requested by ':1.41' (uid=1000 pid=8864 comm="/usr/libexec/xdg-desktop-portal")
dbus-daemon[8559]: Activating service name='org.a11y.atspi.Registry' requested by ':1.0' (uid=1000 pid=8886 comm="/usr/libexec/xdg-desktop-portal-gtk")
dbus-daemon[8559]: Successfully activated service 'org.a11y.atspi.Registry'
SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry
dbus-daemon[8263]: [session uid=1000 pid=8263] Successfully activated service 'org.freedesktop.impl.portal.desktop.gtk'
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.impl.portal.desktop.kde' requested by ':1.41' (uid=1000 pid=8864 comm="/usr/libexec/xdg-desktop-portal")
dbus-daemon[8263]: [session uid=1000 pid=8263] Successfully activated service 'org.freedesktop.impl.portal.desktop.kde'
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.freedesktop.secrets' requested by ':1.41' (uid=1000 pid=8864 comm="/usr/libexec/xdg-desktop-portal")
discover_other_daemon: 1GNOME_KEYRING_CONTROL=/run/user/1000/keyring
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/extras/PlaceholderMessage.qml:238:5: QML Heading: Binding loop detected for property "verticalAlignment"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/extras/PlaceholderMessage.qml:238:5: QML Heading: Binding loop detected for property "verticalAlignment"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/extras/PlaceholderMessage.qml:238:5: QML Heading: Binding loop detected for property "verticalAlignment"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/extras/PlaceholderMessage.qml:238:5: QML Heading: Binding loop detected for property "verticalAlignment"
file:///usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/plasma/extras/PlaceholderMessage.qml:238:5: QML Heading: Binding loop detected for property "verticalAlignment"
kf.bluezqt: PendingCall Error: "Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken."

(/usr/libexec/xdg-desktop-portal:8864): xdg-desktop-portal-[1;33mWARNING[0m **: [34m20:18:14.301[0m: Failed to create secret proxy: Error calling StartServiceByName for org.freedesktop.secrets: Timeout was reached

(/usr/libexec/xdg-desktop-portal:8864): xdg-desktop-portal-[1;33mWARNING[0m **: [34m20:18:14.301[0m: No skeleton to export
dbus-daemon[8263]: [session uid=1000 pid=8263] Successfully activated service 'org.freedesktop.portal.Desktop'
trying to show an empty dialog
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.kde.LogoutPrompt' requested by ':1.23' (uid=1000 pid=8440 comm="/usr/bin/plasmashell")
dbus-daemon[8263]: [session uid=1000 pid=8263] Successfully activated service 'org.kde.LogoutPrompt'
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
qt.qpa.wayland: Wayland does not support QWindow::requestActivate()
org.kde.kf5.kwindowsystem.kwayland: Failed to recreate shadow for PlasmaQuick::Dialog_QML_236(0x5566d7bb98d0, name="popupWindow")
dbus-daemon[8263]: [session uid=1000 pid=8263] Activating service name='org.kde.Shutdown' requested by ':1.51' (uid=1000 pid=9254 comm="/usr/lib/x86_64-linux-gnu/libexec/ksmserver-logout")
dbus-daemon[8263]: [session uid=1000 pid=8263] Successfully activated service 'org.kde.Shutdown'
file:///usr/share/plasma/plasmoids/org.kde.plasma.private.systemtray/contents/ui/items/PlasmoidItem.qml:125: TypeError: Cannot read property 'compactRepresentationItem' of null
W2023-09-26 20:18:37.106236 xcbeventreader.cpp:39] XCB connection ":1" got error: 1
X connection to :1 broken (explicit kill or server shutdown).

kdeinit5: Fatal IO error: client killed
The X11 connection broke (error 1). Did the X11 server die?
kdeinit5: sending SIGHUP to children.
klauncher: Exiting on signal 1
I2023-09-26 20:18:37.106510 xcbmodule.cpp:58] Disconnected from X11 Display :1
kdeinit5: sending SIGTERM to children.
kdeinit5: Exit.
=========================
Fcitx 5.0.21 -- Get Signal No.: 15
Date: try "date -d @1695752317" if you are using GNU date ***
ProcessID: 8351
/usr/bin/fcitx5(+0x1249a)[0x56505f8ce49a]
/lib/x86_64-linux-gnu/libc.so.6(+0x3bfd0)[0x7f696025afd0]
/lib/x86_64-linux-gnu/libc.so.6(epoll_wait+0x56)[0x7f6960327c46]
/lib/x86_64-linux-gnu/libsystemd.so.0(sd_event_wait+0x1e7)[0x7f69607141d7]
/lib/x86_64-linux-gnu/libsystemd.so.0(sd_event_run+0x14b)[0x7f696071543b]
/lib/x86_64-linux-gnu/libsystemd.so.0(sd_event_loop+0x57)[0x7f69607155c7]
/lib/x86_64-linux-gnu/libFcitx5Utils.so.2(_ZN5fcitx9EventLoop4execEv+0x11)[0x7f6960861071]
/lib/x86_64-linux-gnu/libFcitx5Core.so.7(_ZN5fcitx8Instance4execEv+0x54)[0x7f6960943514]
/usr/bin/fcitx5(+0x10fad)[0x56505f8ccfad]
/lib/x86_64-linux-gnu/libc.so.6(+0x271ca)[0x7f69602461ca]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x85)[0x7f6960246285]
/usr/bin/fcitx5(+0x11631)[0x56505f8cd631]
Service  ":1.29" unregistered
I2023-09-26 20:18:37.118910 addonmanager.cpp:297] Unloading addon notifications
I2023-09-26 20:18:37.118947 addonmanager.cpp:297] Unloading addon notificationitem
I2023-09-26 20:18:37.118985 addonmanager.cpp:297] Unloading addon classicui
I2023-09-26 20:18:37.119505 addonmanager.cpp:297] Unloading addon kimpanel
I2023-09-26 20:18:37.119524 addonmanager.cpp:297] Unloading addon waylandim
I2023-09-26 20:18:37.119581 addonmanager.cpp:297] Unloading addon unicode
I2023-09-26 20:18:37.119601 addonmanager.cpp:297] Unloading addon clipboard
I2023-09-26 20:18:37.119676 addonmanager.cpp:297] Unloading addon wayland
I2023-09-26 20:18:37.119693 inputcontextmanager.cpp:358] All display connections are gone, exit now.
I2023-09-26 20:18:37.119731 addonmanager.cpp:297] Unloading addon xim
I2023-09-26 20:18:37.119749 addonmanager.cpp:297] Unloading addon ibusfrontend
I2023-09-26 20:18:37.120972 addonmanager.cpp:297] Unloading addon imeapi
I2023-09-26 20:18:37.121028 addonmanager.cpp:297] Unloading addon fcitx4frontend
I2023-09-26 20:18:37.121081 addonmanager.cpp:297] Unloading addon dbusfrontend
I2023-09-26 20:18:37.121109 addonmanager.cpp:297] Unloading addon dbus
I2023-09-26 20:18:37.121143 addonmanager.cpp:297] Unloading addon luaaddonloader
I2023-09-26 20:18:37.121161 addonmanager.cpp:297] Unloading addon keyman
I2023-09-26 20:18:37.121177 addonmanager.cpp:297] Unloading addon keyboard
I2023-09-26 20:18:37.121267 addonmanager.cpp:297] Unloading addon imselector
I2023-09-26 20:18:37.121285 addonmanager.cpp:297] Unloading addon quickphrase
I2023-09-26 20:18:37.121410 addonmanager.cpp:297] Unloading addon xcb
QtDBus: cannot relay signals from parent QObject(0x556f79e8d740 "") unless they are emitted in the object's thread QThread(0x556f79db6368 "libinput-connection"). Current thread is QThread(0x556f79c0beb0 "").
The Wayland connection broke. Did the Wayland compositor die?
The Wayland connection broke. Did the Wayland compositor die?
The Wayland connection broke. Did the Wayland compositor die?
The Wayland connection broke. Did the Wayland compositor die?
The Wayland connection broke. Did the Wayland compositor die?
The Wayland connection broke. Did the Wayland compositor die?
The Wayland connection broke. Did the Wayland compositor die?
The Wayland connection broke. Did the Wayland compositor die?
The Wayland connection broke. Did the Wayland compositor die?
The Wayland connection broke. Did the Wayland compositor die?
The Wayland connection broke. Did the Wayland compositor die?
Gdk-[1;32mMessage[0m: [34m20:18:37.309[0m: Error reading events from display: Broken pipe
The Wayland connection broke. Did the Wayland compositor die?
Error: could not determine $DISPLAY.
Error: Can not contact kdeinit5!
org.kde.startup: "kdeinit5_shutdown" () exited with code 255
startplasma-wayland: Shutting down...
startplasmacompositor: Shutting down...
startplasmacompositor: Done.

So to be clear, nothing is actually crashing?

(In reply to Nate Graham from comment #3)
> So to be clear, nothing is actually crashing?

Alright, sorry. So it seems that SDDM greeter is not starting. What I should do now? I have changed summary. I would edit importance too, but I am not able to do so now. Should I change "product" or "component" fields?

Aha, that makes this Bug 467547. Can you confirm that the version of SDDM you have on your system is NOT 0.20 or newer?

*** This bug has been marked as a duplicate of bug 467547 ***

(In reply to Nate Graham from comment #5)
> Aha, that makes this Bug 467547. Can you confirm that the version of SDDM
> you have on your system is NOT 0.20 or newer?
> 
> *** This bug has been marked as a duplicate of bug 467547 ***

Thanks for reply. I switched to gnome greeter and I did uninstall SDDM so there is probably now way of telling the SDDM version now (?) It was SDDM that came with Debian 12 + KDE Plasma only netinstaller.

(In reply to Nate Graham from comment #5)
> Aha, that makes this Bug 467547. Can you confirm that the version of SDDM
> you have on your system is NOT 0.20 or newer?

Actually, I remember that recently there was an update in Debian for KDE packages and I remember the SDDM update was included. And the error was still persistent after that update.