Power Management Features (TP 240 - 2609)
Power Management Features
Three power management modes are available in the computer system to reduce power
consumption and to prolong battery life.
Standby Mode: In standby mode, the following occurs:
- The LCD backlight turns off.
- The hard disk drive motor stops.
Events that cause the computer to enter standby mode:
- Standby mode requested by the Fn key (Fn+F3).
The computer exits standby and resumes operation when any key is pressed.
Suspend Mode: In suspend mode, the following occurs:
- The LCD is powered off.
- The hard disk drive is powered off.
- The CPU stops.
Events that cause the computer to enter suspend mode:
Note: In the IBM BIOS Setup Utility, the computer can be set to suspend when
the lid is closed.
The following events cause the computer to resume operation from suspend mode:
- The Lid is opened.
- The real time clock alarm is signaled.
- The ring indicator (RI) is signaled by a PC Card device or the internal modem.
- The Fn key is pressed.
- Power switch is pressed.
The computer also exits suspend mode when the battery is critically low or timer
conditions are satisfied for entering hibernation mode.
Hibernation Mode: For Windows NT user:
A Windows NT user cannot create a hibernation file in a Windows NT system that uses the
NTFS format system.
If you want to use hibernation mode, you should reinstall Windows NT with a FAT format system.
Also, if boot manager is installed, the computer cannot enter hibernation mode.
Note: Before using hibernation mode, you need a hibernation file.
In hibernation mode, the following occurs:
- The system status, RAM, VRAM, and setup data are stored on the hard disk.
- The system is powered off.
Events that cause the computer to enter hibernation mode:
- Hibernation mode requested by function key (Fn+F9).
- Timer conditions are satisfied in suspend mode when hibernate by timer is enabled.
- A critically low battery condition occurs.
- The power switch is pressed. (BIOS Setup)
The computer exits hibernation mode and resumes operation when the power-on switch is pressed.
When power is turned on, the hibernation file in the boot record on the hard disk drive is read
and the system status is restored from the hard disk drive.
The power switch must be pressed to cause the computer to resume operation from hibernation mode.
How to Create the Hibernation Function: Do as follows:
- Turn off the computer.
- Insert the hibernation utility diskette into the diskette drive
(you can create the diskette using the Diskette Factory).
- Turn on the computer.
- Follow the instructions on the screen.
Note: If you change the memory size, you need to recreate the hibernation file or partition.
For partition-based hibernation, use the hibernation utility to delete the partition first before creating a
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