On Sat, 10 Jun 2006, Lee Revell wrote: > It seems that PPC Macs have a hardware PMU: > > http://www.resexcellence.com/linux_icebox/01-31-02.shtml > > And that some embedded devices handle this at the hardware level with no > OS support needed: > > http://ozlabs.org/pipermail/linuxppc-dev/2001-February/010179.html > > So AFAICT there's no standard like ACPI - each board does it > differently.
Right, so, without such support in the hardware or without the appropriate information all you can do is software suspend-to-disk, I think. That's for sleep-states. And just for power-saving you can switch various parts off in subsystem-specific ways (e.g., spin down a IDE hd), clock the CPU down, but still keep your system __running__, i.e. all processes run just as usual only slower. Thanks Guennadi --- Guennadi Liakhovetski
