I personally had a slightly different problem. I have a 17" widescreen laptop. I want to get high resolution (1024x768) for the console. To do so I need to compile framebuffer support into the kernel. I was configuring something in the kernel wrong, so that I always got a garbled screen whenever I use a kernel with framebuffer support. I solved the problem by compiling only the VESA framebuffer into the kernel, then using a boot parameter "vga=792". It worked. I'm not sure though if you're referring to console or X Window system.
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