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Power Management Solution |
Processor Power and Voltage
http://www.pcguide.com/ref/cpu/char/power.htm
Describes external and internal voltage levels, standard voltage levels
and motherboard voltage support, power management, and power and voltage
for specific processors.
Advanced Power Management (APM) overview
http://www.intel.com/IAL/powermgm/apmovr.htm
Contains an overview as well as a download link for the specification.
Updated on Nov 6, 1997
BIOS Settings - Power Management
http://www.pcguide.com/ref/mbsys/bios/set/pm.htm
Describes the various settings that you can use to control your system's
automatic power management settings. This page is from "The PC Guide".
Intel's DPMA page
http://developer.intel.com/design/chipsets/index.htm
Describes how to use DPMA to extend battery life. Updated on Nov 3,
1997
Intel's power management page
http://www.intel.com/IAL/powermgm/
Offers links to white papers, smart battery specifications and home
page, and samples and demos. Updated on Mar 2, 1998
Linux and Advanced Power Management (APM)
http://www.cs.utexas.edu/users/kharker/linux-laptop/apm.html
Contains information about Linux APM support and other power management
issues. Links include: specifications for power management and the smart
battery, information about Linux laptops, an overview of advanced power
management, and resources for utilities, patches and files.
Power solution providers
http://www.jtpackard.com/
Home page of JT Packard, a solution provider for UPS, GENERATOR, and
electrical environment applications. Updated on Aug 3, 1998
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to Automatically Update Subscriptions
Cannot
Reestablish a Network Connection to Programs Using NetDDE
ScanDisk
Portion of Windows 98 Setup Takes a Long Time
Err
Msg: The Registry Is Corrupted and Windows Must Be...
Computer
Is Unable to Go to Standby Mode
Write
Data Error When You Try to Use a CD-ROM Re-Writable Drive
Cannot
Resume Toshiba Tecra Laptop Computer in Docking Station
Code
10 Displayed for APM Support Device After Restarting
Computer
Hangs When You Disconnect Dial-Up Networking Connection
"Windows
Protection Error" After Upgrading to Windows 98
Cannot
Resume Monitor Turned Off By Advanced Power Management
Error
Message: Invalid VxD dynamic link call from TRIVXD(01)...
Windows
98 Network.txt File
Windows
98 Network.txt File Online
Windows
98 Hardware.txt File
Windows
98 Programs.txt File Contents
Windows
98 Setup.txt File
This menu appears on computers having the "Green PC" specification, an initiative of the EPA (Environmental Protection Agency of the United States) with its Energy Star program. The main purpose is to minimize power usage when the system stays inactive for a while. The standard is still not yet achieved among manufacturers, so expect to see several variations. On most cases, the power management strategies are incremental, meaning that the longer a system stays inactive, the more parts will close down. There exists three power management schemes: APM (Advanced Power Management) proposed by Intel and Microsoft. ATA (AT Attachment) for IDE drives. DPMS Display Power Management Signaling) matches video monitors and video cards so they may simultaneously shut down.
*Green Timer of Main Board: Allows to setup the time after which the CPU of an idle system will shut down. Disabled or a time interval ranging from 1 to 15 minutes are the usual options. 5 to 10 minutes recommended.
*Doze Timer: Amount of time before the system will reduce 80% of its activity.
*Standby Timer: Amount of time before the system will reduce 92% of its activity.
*Suspend Timer: Amount of time after the system goes in the most inactive state possible, which is 99%. After this state, the system will require a warm up period so the CPU, hard disk and monitor may go online.
*HDD Standby Timer: Allows to setup the time after which the hard disk of an HHD idle system (no HDD access) will shut down. A terrific option if you have a somewhat noisy hard drive unit. The choice of a time interval depends on how hard disk intensive is your operating system. This may depends also on the amount of memory available. You should setup a longer time interval, like 10 minutes, if you only have 8MB of RAM and running OS/2 or Windows. For a plain/standard DOS environments, 2 to 5 minutes are recommended. If you have a comfortable 16 MB or more, the time lapse can be shorter. There are some reports that this option may cause problems with slave hard drives (AMIBIOS only?).
*System Slow Down. After the specified time interval, the CPU will slowed down to 8 MHz.
Power Management:
*Disabled: Global Power Management will be disabled.
*User Define: Users can define their own power management
*Min Saving: Pre-defined timer values are used such that all timers are in their MAX value
*Max Saving: Pre-defined timer values are used such that all timers are in their MIN value
PM Control by APM:
*No: System BIOS will ignore APM when power managing the system.
*Yes: System BIOS will wait for APM's prompt before it enter any PM mode e.g. DOZE, STANDBY or SUSPEND.
*Note: If APM is installed & there is a task running, even the timer is time out, the APM will not prompt the BIOS to put the system into any power saving mode!
*Note: If APM is not installed, this option has no effect
Video Off option:
*Always on: System BIOS will never turn off the screen.
*Suspend => Off: Screen off when system is in SUSPEND mode.
*Susp, Stby => Off: Screen off when system is in STANDBY or SUSPEND mode.
*All modes => Off: Screen off when system is in DOZE, STANDBY or SUSPEND mode.
Video Off Method:
*Blank Screen: The system BIOS will only blank off the screen when
disabling video.
*V/H SYNC + Blank: In addition to Blank screen, BIOS will also turn off the V-SYNC & H-SYNC signals from VGA cards to monitor.
*DPMS: Select this option if your monitor supports the Display Power Management Signaling (DPMS) standard of the Video Electronics Standards Association (VESA). Use the software supplied for your video subsystem to select video power management values.
*Note: Green monitors detect the V/H SYNC signals to turn off it's electron gun.
*It is important to realize that the CRT consumes the most power (several hundred watts) of any system. To really save energy, we must shut it down when not in use. Green monitors (also known as Energy Star monitors) assist us by reducing power usage by 90% without actually turing off the CRT. Enable this as follows:
*To make a green monitor function properly you MUST use Video Off Method = V/H Sync, because this tell the Green Monitor to shut down. If you incorrectly use the "Blank Screen" setting then you will just get a blank screen which still consumes 100% power.
*If you have a screensav er running, then you obviously won't have CPU inactivity, and the standard BIOS options will not shut the CRT down ever. So, turn OFF your screensaver in the WINDOWS (not BIOS) control panel.
*Yes your old monochrome CRT needed a screensaver, but your VGA tube does not. In fact, an idle green CRT is even better than a screensaver. Think how many kilowatt-hours, nay megawatt-hours, we could save if we all enabled these options at home and in the office.
Modem Use IRQ:
Name the interrupt request (IRQ) line assigned to the modem (if any) on your system. Activity of the selected IRQ always awakens the system.
Suspend Switch:
This setting is used for enabling or disabling the hardware suspend
switch on the motherboard. Many MBs have those two pins, in most cases
near other connetion pins ( pins for turbo sw, turbo led, reset sw, power
led, etc.).
HDD Off after / HDD Power down:
*Disabled: HDD's motor will not be off.
*1Min ~ 15Min: Defines the continuous HDD idle time before the HDD entering power saving mode (motor off).
*When Suspend: BIOS will turn the HDD's motor off when system is in SUSPEND mode.
*Note: When HDD is in power saving mode, any access to the HDD will wake the HDD up.
Doze Mode:
*Disabled: The system will never enter Doze mode.
*1Min ~ 1Hr: Defines the continuous idle time before the system entering Doze mode. If any item defined in "Wake Up
*Events In Doze & Standby" / "PM Events" is ON and activated, the system will be waken up.
*After the selected period of system inactivity (1 minute to 1 hour), the CPU clock runs at slower speed while all other devices still operate at full speed.
Standby Mode:
*Disabled: The system will never enter Standby mode.
*1Min ~ 1Hr: Defines the continuous idle time before the system entering Standby mode. If any item defined in "Wake Up Events In Doze & Standby" / "PM Events" is ON and activated, the system will be waken up.
*After the selected period of system inactivity (1 minute to 1 hour), the fixed disk drive and the video shut off while all other devices still operate at full speed.
Suspend Mode:
*Disabled: The system will never enter Suspend mode.
*1Min ~ 1Hr: Defines the continuous idle time before the system entering Suspend mode. If any item defined in "Wake Up Events In Suspend" / "PM Events" is ON and activated, the system will be waken up.
*After the selected period of system inactivity (1 minute to 1 hour), all devices except the CPU shut off.
PM Events / Wake up events in Doze, Standby and Suspend Mode:
*Disabled: The specified event's activity will not affect the PM Timers/wake
up the system.
*Enabled: The specified event's activity will affect the PM Timers/wake up the system.
*For example, if you have a modem on IRQ3, you can turn On IRQ3 as a wake-up event, so an interrupt from the modem can wake up the system. Or you may wish to turn Off IRQ12 (the PS/2) mouse as a wake-up event, so accidentally brushing the mouse does not awaken the system.
*The default wake-up event is keyboard activity.