I can't get a 1680x1050 framebuffer (my native resolution) or any widescreen framebuffer on this intel iMac and the console looks pretty bad because of it. The best I can use is 1024x768. I have a Radeon HD 2400 XT video card. The Radeon framebuffer "radeonfb" in the kernel doesn't support this card. What can I do?