I'am using the kernel as distributed by the labs and /sys/src/9/pc/pcdisk
has an entry of the form:
	apm	apmjunk

which _I think_ answers your question, "yes I have",
but perhaps there is another incantation to make it work.

Its a pain as I have been through this before, apm works
beautifully on my laptop, but thats at home...

-Steve