With the Frame Buffer enabled, scrolling large amounts of text (e.g. dmesg) and other drawing can be very slow. Give these options to your kernel at boot and scrolling will be much faster.
Brief explanation of options:
vesafb use the VESA Frame Buffer ywrap enable display panning using the VESA protected mode interface mtrr:3 use Memory Type Range Registers in write-combining mode
You may have to use
ypan or another number with
mtrr: depending on your video hardware. See
/usr/src/linux/Documentation/fb/vesafb.txt for more details.
If it works well, this can be added to your lilo.conf in the append line:
append = "video=vesafb:ywrap,mtrr:3"
lilo -v and reboot.