When I go to the menu to change screen resolution, I get "Your X server is using the RandR extension at version 1.2 or greater which doesn't have any configuration yet."

I have ALWAYS been able to change the desktop resolution! I strongly prefer it at 1600x1200, my wife at 1200x1024. We each set our account accordingly and live [relatively] happily ever after.

Now we can't!

What's up? What do I do? Thanks.