I've got a Acer Aspire 1300 (AMD Duron, 368 RAM).
When I installed Fedora, it did not detect my screen type, but worst of all it didn't allow to choose any screen types in the list provided. To carry on installing, I then had to skip this part.
So now, because I couldn't configurate the screen settings properly, Fedora doesn't 'take' all my screen.
as root, I change the configuration of my screen afterwards, but it doesn't work, my screen still looks 'smaller' than it should be.