I have an AMD Radeon HD 7520G graphics card on my HP Pavilion g6 laptop. I'm trying to play a game called Toontown Rewritten -- however the game appears only in a very weird form, with no floor and only lines. I've had this problem before and I fixed it by picking a different drivers in the "Additional Drivers" menu. Somehow the drivers reverted themselves or something and now whenever I click the proprietary drivers, it picks the X.Org.X drivers by itself when I click apply.
What can I do?