Darrin> After some debugging, I determined that the keystroke
Darrin> is in fact command-option-power.  However, it must be
Darrin> entered on /dev/console.  After editing /etc/ttys to

It works on my iBook (1999 model/SE). As you said, it only
works with /dev/console, say, for example, at login: prompt.
Not with xdm windows.

  Strangely enough, it only works once. Once I got on db>, By
typing 'next' to resume the normal operation, command + option +
power no longer works.
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Makoto Fujiwara
http://www.ki.nu/software/NetBSD/iBook2/