Here's the supposedly final solution:
(sudo) apt-get install lightdm-settings slick-greeter
and then
killall -HUP mate-panel
"Login Window" will automagically appear in the "Administration" section of "Control Center".
Thanks @ubucolors for confirming it was a matter of something no more available.
Here's the supposedly final solution:
(sudo) apt-get install lightdm-settings slick-greeter
and then
killall -HUP mate-panel
"Login Window" will automagically appear in the "Administration" section of "Control Center".
Thanks @ubucolors for confirming it was a matter of something no more available.