I may have interest in this soon myself, as I may end up with a lappie that has this. I found these docs:

http://intellinuxgraphics.org/documentation.html

But haven't had time to scan them. Can we get some crowdsourcing done on this doc? Basically what we are looking for is if the 4500 can go into some compatibility mode with the 3100 or (worse) the 950. If so, then it maybe possible to inject that into the ACPI tree using natit, or EFI strings.

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MacBook Pro - have allergy to nickel in the aluminum casing. So my kid gets an expensive toy!

Gateway MX 8738 - Retail, vanilla Snow Leopard 10.6.2 (thanks kizwan!) with Chameleon RC4, modified DSDT. Upgraded to Core 2 CPU (easy to do). Upgraded to 640GB drive. Everything but SD card working. Minor niggles. GMA950 with QE/CI and *no* artifacts.

iMac (luxo/lamp) G4 with Tiger.