Hide a particular user from the Lightdm login screen in Ubuntu 14.04
In Ubuntu 14.04, to hide a particular user from the LightDM login screen is a little bit tricky because of this bug since 2011: https://bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/857651 Here is a workaround: 1. Open /etc/lightdm/users.conf: $ sudo nan /etc/lightdm/users.conf 2. Add the user you want to hide to this line (let's call it trinh): hidden-users=nobody nobody4 noaccess trinh 3. Change the uid of that user to under 500: $ sudo usermod -u 499 trinh 4. Reboot