Is Advanced Power Management (APM) supported by Solaris/x86?

APM isn't really supported on x86. Solaris is "APM tolerant" which
means that if APM can do everything transparently to Solaris, it will
work. If it isn't transparent, Solaris gets confused.

So, SPARC has power management in the OS but x86 does not.

[Thanks to Doug McCallum]