Erik: Copy from old

Erik — Wed, 03 Jun 2009 02:15:49 GMT

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[[Category:Tips]]

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.

video=vesafb:ywrap,mtrr:3

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 <code>ypan</code> or another number with <code>mtrr:</code> depending on your video hardware. See <code>/usr/src/linux/Documentation/fb/vesafb.txt</code> 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"

Run <code>lilo -v</code> and reboot.

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Erik: Copy from old