SDDM UI scaling before login

Help
1

I’ve set 1.5 scaling for my monitor in kde, and it works for lockscreen of my user - UI is bigger, when the screen is locked. However, it doesn’t change scaling in login screen, it is still without scaling, and I can’t find a way to increase it. Is it possible?

I’ve set scaling for my user using plasma-manager.

  programs.plasma = {
    enable = true;
    configFile = {
      "kdeglobals"."KScreen"."ScaleFactor" = 1.5;
      "kwinrc"."Xwayland"."Scale" = 1.5;
      "kscreenlockerrc"."Greeter/Wallpaper/org.kde.image/General"."Image" = "${inputs.background-img}";
      "kscreenlockerrc"."Greeter/Wallpaper/org.kde.image/General"."PreviewImage" = "${inputs.background-img}";
    };
  };

Also I’ve set background in pre-logged sddm by adding theme.conf.user, but I didn’t see options for the scale in existing /nix/store/r2qsgc49gqbqalfvqr924mkyx2p2k1b3-system-path/share/sddm/themes/breeze/theme.conf

  environment.systemPackages = [
    (pkgs.writeTextDir "share/sddm/themes/breeze/theme.conf.user" ''
      [General]
      background=${inputs.background-img}
    '')
  ];
2

I would ask about this upstream.

3

I’m using this sddm config which works fine to scale it correctly on my high dpi laptop screen:

  services.displayManager.sddm = {
    enable = true;
    enableHidpi = true;
    wayland.enable = true;
  };

does this help or do you need to scale it to a specific different value instead of the “default” size for your screen’s dpi density?