[ubuntu] Login Screen Issue

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http://ubuntuforums.org – I'm new to Ubuntu and was messing around with trying to get Plasma widgets on my gnome desktop. Somehow installing the plasma gtk (terminology?) changed my login screen to a KDE looking one and I can't figure out how to change it back. I really like the default look with the login information on the left side, now it's kind of a cheesy window in the middle of the screen with the default kde background. I'm thinking of uninstalling the kde stuff to see if that will fix it but not sure if that will work. I've tried using the Ubuntu Tweak program as well and that doesn't seem to make any di (Hardware)