I've got an Inspiron 600m with a 1.6GHz P-M. ACPI works beautifully, as does cpufreq. My only problem is that I can't suspend. Anything suspend-to-disk just plain doesn't work, and suspend-to-RAM works (as in the laptop can suspend) but on resume the computer freezes to a white screen. Anyone have any ideas?
I'm running Debian sarge with a custom-compiled 2.6.9 kernel.
I tried applying the ACPI patches from acpi.sf.net and software-suspend2, but to no avail.
My priority is suspend-to-RAM over hibernate/suspend-to-disk, but atm I'll use whatever works!

I've got an old Inspiron 600m as well that seems to be having pretty much the same problem. I haven't done too much diagnosis on it yet, and the computer is not mine but someone else's. If you find anything out, do let us know. I'll do likewise.

-Ciao