AMD64 port on a Shuttle ST20G5

[Robert Cates <robert@kormar.de>]

Hi,

I was wondering if anybody else has a Shuttle ST20G5 with an AMD 64 
Athlon and has successfully installed the AMD64 port on it.?  I have 
tried various Linux (x86_64) distros, like Debian 3.1r0, Fedora Core 4, 
Ubuntu 5.10, Kubuntu 5.10 and Gentoo 2005.1 with mostly a 'kernel panic' 
at bootup.  In fact, the Debian installer gets to a point and then has a 
problem accessing the CD drive.  The FC4 installer starts up but when I 
press enter for the default install, it gives:

<ffffffff8010fc2b> {child_rip+0}
Badness in panic at kernel/panic.c:119 (Not tainted)

Ubuntu/Kubuntu 5.10 for the AMD64 gives:

[30.965542] <0>Kernel panic-not syncing: Aiee, killing interrupt handler!

At first I thought this might have something to do with the built-in ATI 
X200 Radion IGP, so I bought an Nvidia PCI-e card, but no change.  I've 
upgraded the BIOS on the Shuttle to the newest available - ft20s018, and 
I've made various changes to the BIOS, all with no change.  I've tried 
with APCI disabled, assigning an IRQ to the video and USB enabled and 
disabled, and other options enabled and disabled, but nothing helps.

If anybody has a solution I'd greatly appreciate it.  I really thought 
this was good hardware when I bought it (specifically for the AMD64 
port), so I'd hate to think I've waisted my money.

Thanks much, in advance!
Robert