Compaq Armada M700: "poweroff" does not power off

[Remo Inverardi <invi@your.toilet.ch>]

I'm using a Compaq Armada M700 laptop, running SID with vanilla, self 
compiled 2.4.20 and 2.4.21-pre6 kernels. Under both kernel versions, a 
"poweroff" does a shutdown, but no power off. I played around with 
kernel options, trying to both shutdown using real and protected mode.

Any ideas? Thanks.