I recently updated to Ubuntu 19.04 and I installed gnome tweaks to install themes.

Unfortunately I installed a login screen theme without backing up the original. Because of that theme my login screen is broken now.

Some images of login screen:

Login Screen

Login settings

Intial icons

I tried reinstalling gdm3 but no luck.


After lots of research on internet, I can say that gdm3 got broke because of my currently installed theme [Flat Remix] . Simple way is to avoid gdm3 and use some other login screen like lightdm. I just installed lightdm and everything is fine now.

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