I just upgraded to Ubuntu 10.04 and it modified my screen resolution. So I figured it would be as simple as editing xorg.config but the file isn't even there. I have been searching for over an hour but I cant seem to find anything that resolves my issues. I remember having this problem when I first installed Ubuntu as well and it took me a long time to figure it out. I am not having much luck this time.

I am using a Macbook so Ubuntu is running under Parallels 5. Can someone explain to me how Ubuntu is managing resolutions in this latest version (10.04)?

Never mind I figured it out. I just dug up an old xorg.config file and copied it over. Everything is back to normal.