Hardware Support for Power Management Features

Nearly all SPARC hardware is capable of using Power Management software features to some extent. However, some features only work on certain types of hardware. Some default power states vary from one type of system to another.

Here's a quick guide to what Power Management features to expect the hardware you have to support, and to the defaults that will be in effect when you first use this Solaris release with your hardware.

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Note -

The Power Management features described in this manual are only provided in the SPARC Platform Edition of this Solaris release.

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System Architecture Distinctions

The Power Management features available on a workstation depends on the SPARC architecture of that system, as described in Table 1-1.

Table 1-1 Availability of Power Management Features in Different SPARC Architectures

SPARC Architecture	Display Power Management	Suspend-Resume	Power Off Under Software Control	AutoWakeup
sun4c	Yes	No	No	No
sun4d	Yes	No	No	No
sun4m	Yes	Yes	Yes	No
sun4u	Yes	Yes	Yes	Yes

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Note -

The SPARCstation Voyager is a sun4m-architecture system, but has special Power Management features, as described in Platform Notes: SPARCstation Voyager Software Guide.

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Monitor Hardware Distinctions

Some models of monitors are capable of screen blanking, while other monitors can also be placed in a power-saving mode through the Power Management software.

Default Distinctions

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.

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Note -

Customers with Sun Microsystems Computer Company (SMCC) hardware may find information about Power Management features supported on additional hardware published in the SMCC Hardware Platform Guide for this Solaris release.

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