Last year I didn't know my roommate before hand and I think we both silently came to the agreement that we would be civil but not become friends. We didn't have much/anything in common, but we didn't have any issues either.

I'm sure my mess bothered her a bit, and her TV/music without headphones bothered me. But they weren't anything big so there was never any drama.

I consider that a best case scenario. This year my roommate will be my suitemate and my new roommate I also don't know. I intend to essentially form the same relationship.