Hi, I have a laptop with an Intel Graphics Media Accelerator 900 in it.
Gnome will load with "vesa" but will be jerky with moving windows around etc. glxgears returns about 430fps after running for a long time (usually starts off at ~200). I can notice things like poor shading to grey when logging out and other such things.

I looked at cwwilson's guide to get DRI working, and everything is the same (I think). My lspci, xorg.conf and kernel details are at the end of the popst. I think that is what I need. I am not really sure, as none have a 900 in them except the i915 driver. Basically I thought if I included all the Intel ones one would do the job.

When I try to run X with "i810" as the driver I get an error:
(WW) I810: No matching Device section for instance (BusID PCI:0:2:1) found
(EE) No devices detected

Fatal server error:
no screens found

Does anyone know what I need to do to get the driver working for X?

Thanks in advance.

lspci returns:
Under Device in my xorg.conf I have:
I have compiled in my kernel (2.6.15.6):
Direct Rendering Manager MODULE
Intel i810 MODULE
Intel 830M, 845G, 852GM, 855GM, 865G
-- i830 driver MODULE
-- i915 driver MODULE

Under Graphics Support:
Support for frame buffer devices BUILT IN
VGA 16-color graphics support BUILT IN
VESA VGA support BUILT IN
Intel 810/815 support BUILT IN
Intel 830M, 845G, 852GM, 855GM, 865G BUILT IN

Oh, also, looking at my linux desktop, in menuconfig I can select AGPGART as a module too, but on my laptop it has a - in it, and I cannot change it to a module, or even built in. At startup I also get an error: FATAL: module agpgart not found. Could this be the problem?

I know that this thread is old, but my answer may help others, too. You're using the generic "vesa" driver which is extremely slow. Change this:

Driver "vesa"
BusID "PCI:0:2:0"
VideoRam 131072

to this:

Driver "intel"
BusID "PCI:0:2:0"
VideoRam 131072

Hope this helps.