I am seeing the same issue:
Sep 16 08:44:19 sddm-greeter[1596]: QFont::fromString: Invalid
description '(empty)'
Sep 16 08:44:19 sddm[1448]: Message received from greeter: Connect
...
Sep 16 08:44:19 sddm-greeter[1596]: Loading
file:///usr/share/sddm/themes/debian-theme/Main.qml...
Sep 16 08:44:19 upowerd[1672]: did not recognise USB path
/sys/devices/platform/USBC000:00/power_supply/ucsi-source-psy-USBC000:001,
please report
Sep 16 08:44:19 sddm-greeter[1596]:
file:///usr/lib/x86_64-linux-gnu/qt5/qml/SddmComponents/LayoutBox.qml:35:5:
QML Connections: Implicitly defined onFoo properties in Connections are
deprecated. Use this syntax instead: function on>
...
Sep 16 08:44:30 sddm-helper[2373]: [PAM] Conversation with 1 messages
Sep 16 08:44:30 sddm-helper[2373]: gkr-pam: unable to locate daemon
control file
Sep 16 08:44:30 sddm-helper[2373]: gkr-pam: stashed password to try
later in open session
Sep 16 08:44:30 sddm-helper[2373]: [PAM] returning.
Sep 16 08:44:30 sddm-helper[2373]: pam_kwallet5(sddm:auth): (null):
pam_sm_authenticate
Sep 16 08:44:30 sddm[1448]: Authenticated successfully
Sep 16 08:44:30 sddm-greeter[1596]: Message received from daemon:
LoginSucceeded
Debian (11, Bullseye) up to date, kernel 5.10.0-18-amd64, KDE desktop:
5.20.5, qt 5.15.2
What needs to be done to get rid of this, to fix this?