[gentoo-user] need help with x86_64 on MacBook Pro

Hi, new Gentoo user here (but not new to the wonderful world of unix).

A few weeks ago I installed Gentoo into Parallels under OSX on my  
MacBook Pro (rev 2, Core2Duo) to start familiarizing myself with the  
system. I liked it well enough that I decided to get in a little  
deeper and experiment with the x86_64 release. My MBPro is capable of  
running it so I repartitioned my drive and was off to the races.

I've been following the great instructions on the wiki posted here  
[1] using the minimal install CD with the 2006.1 profile. However,  
the instructions there primarily focus on the 32-bit release. I  
coupled those instructions with the Gentoo Handbook for x86_64 to  
cover the areas that the wiki (rightly) left out [2]. The goal was to  
install a pure 64-bit non-multilib system to use as a base for a Xen  
Dom0 (I switched to the non-multilib profile in my chroot).

The MacBook installation instructions contained pointers to some  
internal [3] and external [4] sources which were helpful. These other  
pages mostly focus on doing a 32-bit install so I've been searching  
high and low for a kernel.config for a 64-bit build known to work on  
a MacBook Pro. I tried creating one myself but it doesn't boot. Grub  
(0.97 installed via "emerge grub-static" per the handbook) displays  
my customized 2.6.20 + mactel patched kernel but the boot attempt  
results in a black screen and no hard drive activity. I'm at a bit of  
a loss to troubleshoot this.

Anyone have a working kernel.config for x86_64 that they can point me  
to? I'd be happy to update the wiki to include more specific  
instructions related to x86_64 once I get a working system.

Thanks for your help.

cr

[1] http://gentoo-wiki.com/HARDWARE_Apple_MacBook
[2] http://www.gentoo.org/doc/en/handbook/handbook-amd64.xml
[3] http://gentoo-wiki.com/HARDWARE_Apple_MacBook/Configuration_Files
[4] http://www.odi.ch/prog/macbookpro/index.php
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