I usually develop and test my webpages on various VirtualBox virtual machines and since I am doing a lot of console work I use a framebuffer which enables using larger resolutions than the default console.
Until now I was using Ubuntu 8.04 LTS virtual machines, but recently I upgraded to 9.10.
Ubuntu 9.10 (Karmic Koala) is using grub2 so the simple adding of
vga=791 or similar value to boot options won't work. Here's how to enable the framebuffer on virtual consoles: