xkb_types "noaltgr" {
    virtual_modifiers Shift, Alt;

    type "CTRL+ALT" {
        modifiers = Shift + Alt;
        map[None] = Level1;
        map[Shift] = Level2;
        map[Alt] = Level3;
        map[Shift+Alt] = Level4;
        level_name[Level1] = "Base";
        level_name[Level2] = "Shift";
        level_name[Level3] = "Alt";
        level_name[Level4] = "Shift Alt";
    };
};