How to Restore The Default Login Screen in Ubuntu 14.04

After installing another desktop environment (e.g. KDE, MATE, Cinnamon) in Ubuntu Unity, the default login screen may be replaced after restart. Here’s the quick tip for those who want to restore the default login screen, Unity Greeter, in Ubuntu 14.04 and/or Ubuntu 14.10, so it looks like: 1. By default, Ubuntu Unity uses Lightdm display… Continue reading How to Restore The Default Login Screen in Ubuntu 14.04