I changed to gnome classic fallback, I auto-login but it defaults to unity 3d, how do I make auto-login default to gnome classic?


3 Answers 3


Run the following in a gome-terminal:

  • If you want GNOME Classic with effects:

    sudo /usr/lib/lightdm/lightdm-set-defaults -s gnome-classic

  • If you want GNOME Classic without effects:

    sudo /usr/lib/lightdm/lightdm-set-defaults -s gnome-fallback

  • gnome-fallback is perfect and what I need for my remote instance since screen updates aren't sent 100% during animations / screen redraws. But I don't think this setting is getting set correctly as Libre Office is still doing silly window resizing when multiple are open and I click its launcher icon. How can I verify this command has been sent correctly and is sticking? Feb 27, 2014 at 4:59
  • Ubuntu 18.04 has no lightdm-set-defaults
    – podarok
    Jun 27, 2019 at 6:10

auto log-in gnome classic desktop :

  • sudo apt-get install gnome-session-fallback
  • sudo /usr/lib/lightdm/lightdm-set-defaults -s gnome-classic

For Ubuntu 14.04

I followed the post here

Summary :

  • Install the lightdm-webkit-greeter package: sudo apt-get install lightdm-webkit-greeter -y.
  • Open the /etc/lightdm/lightdm-webkit-greeter.conf file in your favorite text editor.
  • Add the following lines to the end of the file:

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