Comment 11 for bug 1458220

In my Mageia 5 beta 3 VM I do have all the files you mentioned, and the configuration look good:

$ cat /etc/locale.conf
LANGUAGE=de_DE.UTF-8:de
LANG=de_DE.UTF-8

$ cat /etc/vconsole.conf
KEYMAP=de-latin1
FONT=lat0-16

$ cat /etc/X11/xorg.conf.d/00-keyboard.conf
# Read and parsed by systemd-localed. It's probably wise not to edit this file
# manually too freely.
Section "InputClass"
        Identifier "system-keyboard"
        MatchIsKeyboard "on"
        Option "XkbLayout" "de"
        Option "XkbModel" "pc105"
        Option "XkbOptions" "compose:rwin"
EndSection

$ localectl
   System Locale: LANG=de_DE.UTF-8
                  LANGUAGE=de_DE.UTF-8:de
       VC Keymap: de-latin1
      X11 Layout: de
       X11 Model: pc105
     X11 Options: compose:rwin

So I guess all those files and localectl output are related to Colin's fixes for the GNOME l10n issues.

Still, all that stuff does not fix the sddm flaw of showing "us" keyboard layout and grabbing the correct one when you start typing.