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IBM Presents OS/2 Software Hits 1995
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OS-2_SW_HITS_2ND_EDITION_1995.ISO
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i05
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m76pmd.dsk
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unc.dsk
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README.AP_
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README.AP
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1994-01-21
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207 lines
Copyright (C) IBM Corporation 1993
README.APM V1.0
───────────────────
Display Power Management
────────────────────────
Your IBM* PS/2* Model 76i, 76s, 77i, or 77s system supports display power
management if your display conforms to the Video Electronics Standards
Association (VESA) Display Power Management Signaling (DPMS) interface and
your operating system supports Advanced Power Management (APM) Version 1.0.
Your display power management device driver (PMBIOS.EXE) will save you power
by allowing your display to enter power-saving states after a time of
inactivity.
See your operating system documentation for more information about APM V1.0.
Operating Systems that support APM V1.0 include IBM DOS V5.02 (or later),
Microsoft** MS-DOS** V6.0 (or later), IBM OS/2* V2.1, and Microsoft Windows**
V3.1.
See your display documentation for more information about DPMS. IBM displays
that currently support DPMS are IBM 6324, 6325, 6327, 9521, 9524, 9525, and
9527. These IBM displays will blank and the display power on indicator will
flash in some DPMS states.
This readme file tells you how to install and use this feature.
STEP 1: ENABLE Display Power Management with your System Programs
─────────────────────────────────────────────────────────────────
Run the Setup and Diagnostics program with your system. Select the "Set
Configuration" option. Select the "Change Configuration" option. Select the
"Power Management Display" in the built in features list. Use the F5 key to
ENABLE display power management and use the F10 key to save.
Note that the auto configuration option will DISABLE display power
management. Thus, this feature would have to be ENABLED again if you ran
auto configuration at a later date.
STEP 2: Installation for DOS
────────────────────────────
To use the display power management driver under DOS, you need a version of
DOS which supports APM. Both IBM DOS V5.02 or greater and Microsoft MS-DOS
V6.0 or greater, support APM.
A. Run the installation program supplied on your Enhanced Local Bus Graphics
DOS and Windows Device Driver Diskette. Follow the instructions on the
screen and select the "Install display power management device driver"
option on the main menu of the installation program (INST7677.EXE).
The installation program will copy the following files onto your hard
disk:
PMBIOS.EXE: display power management device driver
LACAPM.EXE: APM utility
APMMSG.GML: message file for the APM utility
README.APM: this file
B. Supplied with your version of APM compatible DOS there will be a device
driver called POWER.EXE. Make sure that this driver is installed on your
system and referenced in your config.sys file. For example if your DOS
directory is C:\DOS then you should insert the following line into your
CONFIG.SYS file.
DEVICE=C:\DOS\POWER.EXE
NOTE: This statement must be inserted into CONFIG.SYS *after* the
statement that the installation program inserted into CONFIG.SYS to invoke
your APM device driver. So you should end up with the following entries
in your CONFIG.SYS file
DEVICE=C:\DOS\PMBIOS.EXE
DEVICE=C:\DOS\POWER.EXE
C. After completing changes to CONFIG.SYS, reboot your computer in order for
these changes to take effect.
STEP 3: Installation for Windows
────────────────────────────────
To use the display power management driver under Windows, you need a version
of Microsoft Windows which supports APM. Microsoft Windows V3.1 or greater
supports APM.
A. First, follow the installation instructions above for installing the DOS
display power management device driver. Note that if you always run
Windows rather than DOS, and you always run Windows in Enhanced mode
(which is the default), then you do not have to load POWER.EXE in your
CONFIG.SYS file.
B. Enable Windows for APM by using the Windows SETUP program as described in
the "Display information for Windows 3.1 device driver install" option on
the main menu of the installation program (INST7677.EXE).
The Windows setup program will copy the following files onto your hard
disk:
LACAPM.DLL: Windows APM utility
LACAPM.HLP: Windows APM utility help file
CTL3D.DLL: three dimensional button DLL
MSG.DLL: Windows message file
Your SYSTEM.INI file in your WINDOWS subdirectory will also be updated and
the following lines will be inserted:
[Power.Drv]
OptionsDLL=LACAPM.DLL
STEP 4: Set Timeout Values
──────────────────────────
Both DOS and Windows Advanced Power Management will allow you to put your
power manageable display in up to three different states which are:
STANDBY: Minimum power saving, but immediate return to ON
SUSPEND: Medium power saving and medium return to ON
OFF: Maximum power saving, but some noticeable delay in
returning to ON
By default, the timeout values in each state will be set to:
STANDBY: 15 minutes
SUSPEND: 30 minutes
OFF: 60 minutes
This means that if the user does not touch the keyboard or mouse for 15
minutes, then the display will go into STANDBY state. 15 minutes later it
will go to SUSPEND state. 30 minutes later it will go to OFF state.
Whenever the user presses a key or moves the mouse, the display will
return to ON. ON is the only state where the screen is not blanked.
The user can set each of these time-out values from 1 to 99 minutes.
Any of the three states may be disabled.
NOTE: If you are in any of the power saving states, press any key
to bring the display back to ON state. But if you are in Windows
full screen DOS prompt, DON'T use the Ctrl-Esc combination key to bring back
the display as this will put the display into an erroneous state.
See your display documentation for recommended settings. The recommended
settings for the IBM displays:
STANDBY 5 to 30 min.
SUSPEND 20 to 50 min.
OFF 40 to 70 min.
Using Advanced Power Management with DOS
────────────────────────────────────────
The APM DOS device driver can be executed like an application in order to
change APM parameters.
LACAPM parameter syntax:
LACAPM [/ST:mm] [/SU:mm] [/OF:mm]
where: ST = Standby Timeout
SU = Suspend Tineout
OF = Off Timeout
mm = a time-out value in minutes (from 1 to 99)
mm = NOW causes immediate entry into power-saving state.
mm = DISABLE prevents the system from entering that state.
Only the initial letter of the keywords NOW and DISABLE is required.
For proper operation, the time out values should be chosen so that
STANDBY timeout is not greater than SUSPEND timeout and SUSPEND timeout
is not greater than OFF timeout.
Example 1: lacapm /st:2 /su:5 /of:15
This would put your display in the STANDBY state after 2
minutes, SUSPEND state 3 minutes later and the OFF state 10
minutes later.
Example 2: lacapm /of:NOW
This would put your display in the OFF state immediately.
Using Advanced Power Management with Windows
────────────────────────────────────────────
When the Windows has been setup to run on a "MS-DOS System with APM" and
windows detects that you have the PMBIOS driver loaded, then a Power
Management Icon will appear when you open the Windows Control Panel.
Doubleclick on the "Power" icon. The Advanced mode should be selected.
Click on "Options" to go to change the timeout values for power-saving
states, enable or disable states, or make your display go into one of the
power-saving states immediately.
For proper operation, the time out values should be chosen so that STANDBY
timeout is not greater than SUSPEND timeout and SUSPEND timeout is not
greater than OFF timeout.
Click on the "Help" button on the Power Management Options Panel for
further information.
=============================================================================
* Trademark of the IBM Corporation.
** Trademark of Microsoft Corporation.