what triggers wakeup from suspend?

[Andras Simon]

And, more importantly, how to change it.

I have two types of netbooks (an Asus Eee 701, and an Acer Aspire
One), both running F14. The Acer can be woken up by pressing any key
on the keyboard; on the Eee, I have to push the Power button. Since
that button seems to be dying, I'd like to be able to emulate the
Acer's behavior. Is that doable? Or is this hardware-dependent?

There's no gnome/kde/whatever on the Eee, just plain icewm.

Andras