After installation, however, the fbi did not work in my Ubuntu. I removed it, and reinstalled again when I found the solution.
sudo vim /boot/grub/menu.lstThat's funny, and that lets me do more works under text mode console. :-)
Search for ``defoptions=''search for ``/boot/vmlinuz''
add the ``vga=791'' under the line of ``# defoptions=quiet splash''
add ``vga=791'' to the end of the line