Ubuntu 14.10: Remove Guest Session, White Dots From Login Screen

September 28, 2014 — 2 Comments

remove white dots, guest session

This is a quick tutorial that shows you how to remove the Guest session and the white dots from Unity’s login screen in Ubuntu 14.10 Utopic.

1. To remove the Guest session:

Press Ctrl+Alt+T on keyboard to open the terminal. When it opens, paste the command below and hit enter:

sudo gedit /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf

Type in your user password when it asks. Note that there’s no visual feed back when typing password.

Remove Guest session in Unity

As the picture shows, when the editor opens, add a new line into the end and save the file


That’s it. You won’t see the Guest next time Ubuntu boots up.

2. To Remove white dots:

There is a graphical tool dconf-editor which provides options to change the login screen background and remove the white dots (draw grid).

a.) To install dconf-editor, click the link below to bring up Ubuntu Software Center and click the install button:

Click install dconf-editor

b.) To configure Unity login screen, you need the lightdm user privilege to launcher dconf-editor. To do so:

Press Ctrl+Alt+T to open terminal. When it opens, run commands to get root privilege:

sudo -i

Type in your user password when it asks.

Allow user lightdm to create a connection to the X server:

xhost +SI:localuser:lightdm

Switch to user lightdm in this terminal window:

su lightdm -s /bin/bash

Finally start dconf-editor:


c.) When the dconf-editor opens, navigate to com –> canonical –> unity-greeter in left. Then disable the value for both draw-grid and draw-user-backgrounds.

Remove White Dots

Done. You’ll see the changes in next boot.

I'm a freelance blogger who started using Ubuntu 5+ years ago and wishes to share my experiences and some useful tips with Ubuntu beginners and lovers. Please notify me if you find any typo/grammar/language mistakes. English is not my native language. Contact me on Google Plus or email to ubuntuhandbook1@gmail.com

2 responses to Ubuntu 14.10: Remove Guest Session, White Dots From Login Screen

  1. Hi Jim, thank you for the information. Can you tell me how to add a root user in the kde 5 login screen in ubuntu server 14.10?

  2. thanks Jim, still very useful information in 1604, been a while since ive used advanced unix user permissions. archiving this text data for future reference
    rock on

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