I had been using Gnome on Ubuntu 16.04 instead of the usual Unity. When I updated to 18.04, this weird double u's logo persisted through the upgrade and now both of my home and lock screens are different.

Startup logo

Lock screen 1

Lock screen 2


That's GNOME. It's a little different from what you're used to in 16.04. What you're seeing is the GNOME splash (boot/welcome) screen, and gdm3 login screen.

ls -al /etc/alternatives/*plymouth* # shows what the splash screen is currently set to.

You can change it back to the old-school Ubuntu splash screens using the update-alternatives command. See man update-alternatives for help.

If you're running with gdm3 display manager, and you wish to run lightdm instead, you can sudo dpkg-reconfigure lightdm.

But... I'd recommend leaving this all alone, and just take some time to get used to the new look.

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  • Thanks. Changing it to gdm3 worked. I had forgotten that I had switched the display managers. – Eru Dec 21 '18 at 15:20

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