Leo's XFree looked crap after the gentoo install, poor resolution, low
colour depth. It is an intel i810 based video system (actually it might
have some later model number, but is essentially in the same series.

We also had an error message on starting X. "unable to open
/dev/agpgart, no such device"

This is despite the agpgart module being loaded, and /dev/agpgart having
been created via mknod per the docoumentation.

I have a machine with an earlier i810 chipset here with the same
problem. I just solved it by trawling the net for an answer, and finally
realised that in 2.6 series kernels there is an additional module to
load, namely intel_agp

Normally X loads the agpgart module, which seems to be right for 2.4
series kernels, but for 2.6 it needs to load intel_agp which it doesn't.

The solution (this is on gentoo, but other distros will have an
equivalent mechanism):

load it by hand before X starts (bleeech)
OR
1. add a line to etc/modules.autoload.d/kernel-2.6 that says
intel_agp
2. run modules-update
3. it will load in each and every boot thereafter.

Theres probably also a way via /etc/modules.d/aliases, but I haven't
gone into that.

Hmmmm I just remembered Leo is not back on the list yet, Chris S, can
you draw this to his attention for me if you see him please?

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