I had the little problem that in sddm the cursor and size did not respect the plasma6 theme.- Apply Plasma settings to sddm seems not working.
"Apply plasma settings" does not work properly. So I edited /etc/sddm.conf.d/kde_settings.conf adding [Theme] CursorSize=24 CursorTheme=breeze_cursors ..... ..... and added in /usr/share/sddm/scripts/Xsetup .... .... echo 'Xcursor.theme: breeze_cursors' | xrdb -nocpp -merge echo 'Xcursor.size: 24' | xrdb -nocpp -merge it seems to work inspired by https://github.com/sddm/sddm/issues/1894 -- Saluti, Luca Pedrielli