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Using Power Management™ Sun Microsystems, Inc. 901 San Antonio Road Palo Alto, CA 94303-4900 U.S.A Part No.: 805-4433-10 October 1998, Revision A Send comments about this document to: docfeedback@sun.com Copyright 1998 Sun Microsystems, Inc., 901 San Antonio Road, Palo Alto, California 94303-4900 U.S.A. This product or document is protected by copyright and distributed under licenses restricting its use, copying, distribution, and decompilation. No part of this product or document may be reproduced in any form by any means without prior written authorization of Sun and its licensors, if any. Third-party software, including font technology, is copyrighted and licensed from Sun suppliers. Parts of the product may be derived from Berkeley BSD systems, licensed from the University of California. UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open Company, Ltd. Sun, Sun Microsystems, the Sun logo, AnswerBook, and Solaris are trademarks, registered trademarks, or service marks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the U.S. and other countries. Products bearing SPARC trademarks are based upon an architecture developed by Sun Microsystems, Inc. The OPEN LOOK and Sun™ Graphical User Interface was developed by Sun Microsystems, Inc. for its users and licensees. Sun acknowledges the pioneering efforts of Xerox in researching and developing the concept of visual or graphical user interfaces for the computer industry. Sun holds a non-exclusive license from Xerox to the Xerox Graphical User Interface, which license also covers Sun’s licensees who implement OPEN LOOK GUIs and otherwise comply with Sun’s written license agreements. 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Aucune partie de ce produit ou document ne peut être reproduite sous aucune forme, par quelque moyen que ce soit, sans l’autorisation préalable et écrite de Sun et de ses bailleurs de licence, s’il y en a. Le logiciel détenu par des tiers, et qui comprend la technologie relative aux polices de caractères, est protégé par un copyright et licencié par des fournisseurs de Sun. Des parties de ce produit pourront être dérivées des systèmes Berkeley BSD licenciés par l’Université de Californie. UNIX est une marque déposée aux Etats-Unis et dans d’autres pays et licenciée exclusivement par X/Open Company, Ltd. Sun, Sun Microsystems, le logo Sun, AnswerBook, et Solaris sont des marques de fabrique ou des marques déposées, ou marques de service, de Sun Microsystems, Inc. aux Etats-Unis et dans d’autres pays. Toutes les marques SPARC sont utilisées sous licence et sont des marques de fabrique ou des marques déposées de SPARC International, Inc. aux Etats-Unis et dans d’autres pays. Les produits portant les marques SPARC sont basés sur une architecture développée par Sun Microsystems, Inc. L’interface d’utilisation graphique OPEN LOOK et Sun™ a été développée par Sun Microsystems, Inc. pour ses utilisateurs et licenciés. Sun reconnaît les efforts de pionniers de Xerox pour la recherche et le développement du concept des interfaces d’utilisation visuelle ou graphique pour l’industrie de l’informatique. Sun détient une licence non exclusive de Xerox sur l’interface d’utilisation graphique Xerox, cette licence couvrant également les licenciés de Sun qui mettent en place l’interface d’utilisation graphique OPEN LOOK et qui en outre se conforment aux licences écrites de Sun. CETTE PUBLICATION EST FOURNIE "EN L’ETAT" ET AUCUNE GARANTIE, EXPRESSE OU IMPLICITE, N’EST ACCORDEE, Y COMPRIS DES GARANTIES CONCERNANT LA VALEUR MARCHANDE, L’APTITUDE DE LA PUBLICATION A REPONDRE A UNE UTILISATION PARTICULIERE, OU LE FAIT QU’ELLE NE SOIT PAS CONTREFAISANTE DE PRODUIT DE TIERS. CE DENI DE GARANTIE NE S’APPLIQUERAIT PAS, DANS LA MESURE OU IL SERAIT TENU JURIDIQUEMENT NUL ET NON AVENU. Please Recycle Contents Preface 1. ix Introduction to Power Management Value of Power Management 1 1 Display Monitor Power Management System Power Management 2 The dtpower Program 2 The Suspend-Resume Feature 1 2 Hardware Support for Power Management Features System Architecture Distinctions Monitor Hardware Distinctions Default Distinctions 2. Managing Monitor Power 3 3 4 4 5 Power Management of Monitors Using CDE 5 ▼ To Manage Monitor Power Through CDE Style Manager ▼ To Reactivate the Monitor 8 Power Managing Monitors with OpenWindows ▼ 6 8 To Manage Monitor Power with OpenWindows 8 Power Managing Monitors in a Non-Windowing Environment 9 Contents iii 3. Managing System Power 11 Choosing to Use Power Management Electronic Mail Issues Mail Alias Issues 12 12 Remote Login Issues 12 Networked Software Issues 12 Solstice AutoClient Issues ATM Issues 11 12 13 Cron Job Issues 13 Calendar Manager Issues Thermal Stress Issues 13 13 Starting the dtpower Power Manager Program 14 ▼ To Start dtpower From the Command Line ▼ To Start dtpower From a CDE or OpenWindows Menu ▼ To Start dtpower From the CDE Application Manager Using the dtpower Program The dtpower Window 14 15 15 15 General dtpower Window Controls 16 System AutoShutdown and AutoWakeup Controls Performing Tasks with dtpower 17 18 ▼ To Set an Idle Time for AutoShutdown ▼ To Enable or Disable AutoWakeup ▼ To Exit dtpower 18 20 21 Suspending and Resuming Your System Manually Suspending Your System iv 15 22 23 ▼ To Suspend Your System Using the Keyboard ▼ To Immediately Suspend Your System Using the Keyboard Using Power Management • October 1998 23 25 ▼ To Suspend Your System Using the Standby Switch ▼ To Suspend Your System Using CDE ▼ To Suspend Your System Using OpenWindows ▼ To Initiate Suspend Using the sys-suspend Command Resuming Your System ▼ A. 26 27 28 Configuring Power Management Using the Command Line 30 Logical Dependents Becoming Superuser 31 31 To Become Superuser Setting Device Idle Time ▼ 31 31 To Change the Length of Idle Time Setting AutoShutdown ▼ 31 33 To Change the Automatic Shutdown Time Changing the Idleness Definition 34 Using a Script to Define Idleness 35 Changing the Statefile Location 33 36 Power Management for Two Monitors on One System Troubleshooting 39 To Respond When the Power Key Does Not Suspend the System Suspend Failures 39 40 What to Do If a Device Suspend Fails ▼ 37 39 Power Key Problems ▼ 29 29 The power.conf File ▼ 27 28 To Resume a Suspended System Idleness Definition B. 25 40 To Respond to a Device Suspend Failure 41 What to Do If a Process Fails to Suspend 43 Contents v ▼ To Respond to a Process Suspend Failure 43 What to Do If More Disk Space Is Needed ▼ To Respond to a Disk Space Limitation 44 What to Do If Abnormal Conditions Occur ▼ To Respond to an Abnormal Condition Disabling the Screen Lock ▼ vi 43 44 44 45 To Disable the Screen Lock After Using the Power Key to Suspend Using Power Management • October 1998 45 Figures 6 FIGURE 2-1 CDE Style Manager Main Window FIGURE 2-2 CDE Style Manager - Screen Window FIGURE 3-1 dtpower Icon FIGURE 3-2 The dtpower Window FIGURE 3-3 Setting the AutoShutdown Timing 19 FIGURE 3-4 Disabling AutoShutdown FIGURE 3-5 Enabling AutoWakeup FIGURE 3-6 Power Key Location: Sun Type 5 Keyboard 23 FIGURE 3-7 Power Key Location: Sun Compact 1 Keyboard 24 FIGURE 3-8 Confirmation Window for Power Key 24 FIGURE 3-9 Confirmation Window for Standby Switch 26 FIGURE B-1 Suspend Failed Pop-up Window FIGURE B-2 Power Off Failed Pop-up Window 7 14 16 20 21 40 42 Figures vii viii Using Power Management • October 1998 Preface Using Power Management™ describes how to configure and operate desktop computers to conserve energy. Power Management™ software is provided with this Solaris release. Software for managing system power is not intended for use on server computers; however, techniques described in this manual for managing power for a display connected to a server computer may be of value. This manual describes how to use Power Management features on workstations produced by Sun Microsystems™, Inc. If you are using this Solaris release on hardware supplied by another manufacturer, refer to information sources for those products to determine whether this Power Management software can be used with your hardware. Also refer to your hardware manufacturer’s documentation to determine which distinctions within this manual (such as between machines with sun4m and sun4u architectures) apply to your hardware. The Solaris 2.6 release was the first time Power Management™ software was provided as an integral part of the Solaris operating environment. Who Should Use This Book This manual is intended for users and administrators who want to reduce the amount of energy consumed by their SPARC workstation.. Note – The features described in this manual are in effect only for SPARC workstations running this Solaris release. Preface ix How This Book Is Organized This manual contains the following chapters and appendixes: Chapter 1 “Introduction to Power Management describes the value of reducing power consumption and provides an overview of how Power Management features can help achieve that goal. Chapter 2 “Managing Monitor Power describes how to use software features to turn off power to a monitor when that device is not in use. Chapter 3 “Managing System Power describes the features of the dtpower program that enable a desktop system to power off automatically when not in use and power on again automatically at a time you choose. This chapter describes additional ways to use the Suspend-Resume feature that saves your system state when you power down and resumes in the save state. Appendix A “Configuring Power Management Using the Command Line describes how to configure Power Management features through the pmconfig command and the power.conf file. This appendix also explains how to change the idleness definition by editing the power.conf file. Appendix B “Troubleshooting explains how to respond to various problems and error messages related to Power Management software. Related Documentation Information about Power Management features for certain Sun hardware products is provided in the Sun Hardware Platform Guide for this Solaris release. If you have a SPARCstation™ Voyager™ system, there are some special power management features for that hardware. For information about those features, see Platform Notes: SPARCstation Voyager Software Guide, which is available in the Solaris 2.7 on Sun Hardware AnswerBook supplied by Sun Microsystems Computer Company. Developers of products that will use Power Management features should refer to the Writing Device Drivers manual. x Using Power Management • October 1998