[CentOS] CentOS 7 + Xfce + GDM : disable "switch user" ?

Sat Apr 7 11:09:39 UTC 2018
Nicolas Kovacs <info at microlinux.fr>


I have CentOS 7 + Xfce + GDM installed on all our local school's desktop

I'd like to disable the "switch user" menu entry, since our desktop
clients have a relatively limited amount of RAM. Most users tend to use
the "switch user" functionality to log off, and at the end of the day,
the computer has no RAM left.

I know there is a way to disable this functionality, I vaguely remember
having it done a few years ago on Slackware.

Any suggestions ?

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