Question: How can I prevent multiple logins via LightDM

Answer I use xscreensaver and to forbid it: ! in .Xresources xscreensaver.splash: false ! Set to nothing makes user switching not possible *.newLoginCommand: Lightdm supports .d directories, by default they aren&rsquo;t created on Debian but upstream documents them clearly. In other words: /etc/lightdm/lightdm.conf.d/ is read. Which means you need to drop a file,…