I believe the Alt+Shift+L allow swtiching of the keyboard layout. It seems this does not work on the logon screen. Is there another shortcut key to change the keyboard on the logon screen?
Did you try Super+Space?
it does nothing on the logon screen
localectl set-keymap de
You never said what Desktop Manager you were using, but if it is GDM, the following command should work to identify what shortcut should change the keyboard layout.
sudo -u gdm gsettings get org.gnome.desktop.wm.keybindings switch-input-source
Where do i type this command on the logon screen?
Ah, sorry, that won’t work from the DM (i.e. the login screen). You will have to sign in and use a terminal window or else use Ctrl+Alt+F3 to get a virtual terminal, sign in there and then that command should work.
Just to change the kezboard lazout? weird but doable.
No, that command was to “… to identify what shortcut should change the keyboard layout.” Or, if you change get to set in that command, you could potentially change the shortcut.