The default behavior in Power Management functions varies on systems as described in this section.
AutoShutdown: Off by default for sun4m-architecture systems; on by default for sun4u architecture systems
Display Power Management: Off by default for the OpenWindows(TM) desktop; on by default for the CDE desktop
If you have Sun Microsystems hardware that is not described by this manual, refer to the Sun Hardware Platform Guide for this Solaris release. It may contain additional information about Power management for your system.