I've got my Dell 1708 17" monitor working with my RPi2B. No black borders, resolution seems great, screen is set to vertical. The only problem is that the Attract Mode frontend (verticools layout) is squished... the font, the wheel art, its all consistent. I can't seem to be able to affect the frontend dimensions in the usual config files. Meanwhile the desktop and the actual Mame4all look great.
Any advice?