I've been using FC6 and recently Fedora 7 for a year now with no problems. Unfortunately I've encountered some problems since I've changed my display and added a PC.
I can only work with the shell when I connect the Display with DVI. If I use a VGA calbe, X starts with the correct resoltion.
I should point out that I have another PC running FC6 and a NVIDIA graphic card and I don't have any problems (full resolution DVI and VGA).
So I suppose the issue has to do something with the Matrox graphics.
Any help is greatly appreciated