How do I find my framebuffer?

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http://askubuntu.com – When I run fbi in a virtual terminal I get using "DejaVu Sans Mono-16", pixelsize=16.67 file=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSansMono.ttf open /dev/fb0: No such file or directory and it's true, I don't have /dev/fb0 But I must have a framebuffer, right? Where would I find it? (HowTos)