Its not the regular Ubuntu login screen and this happened just today. Can someone tell me why its different then yesterday? DId i download something accidentally so that it updated itself? More importantly, how can i bring back the regular Ubuntu login screen?

Different login background screen


Run this command:
sudo dpkg-reconfigure lightdm
Apparently, for some reason, your default dm has been changed to gdm. You need to switch it back to lightdm.

Comment if it worked.

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