Hibernation Mode Conditions And Descriptions; Display Standby Mode Conditions And Descriptions - Acer 390 Series Service Manual

Table 1-33

Hibernation Mode Conditions and Descriptions

Condition
The condition to
enter Hibernation
Mode
The condition of
Hibernation Mode
The condition back
to On Mode
DISPLAY STANDBY MODE
Screen activity is determined by the keyboard, the built-in touchpad, and an external PS/2 pointing
device. If these devices are idle for the period determined by the computer's HPM unit, the display
shuts off until you press a key or move the touchpad or external mouse.
Table 1-34

Display Standby Mode Conditions and Descriptions

Condition
The condition to enter
Display Standby Mode
The condition of
Display Standby Mode
The condition back to
On Mode
The VGA BIOS should support DPMS (Desktop Power Management System) for
the standby and hibernation mode function call. When the Display Standby Timer
expires, the system BIOS will execute the DPMS service routines.
System Introduction
There are two necessary conditions for the computer to enter standby mode:
Heuristic Power Management Mode must be set to [ENABLED].
System Sleep State must be set to [HIBERNATION].
The hibernation file created by Sleep Manager must be present and valid.
In this situation, the following are ways to enter hibernation mode:
Pressing the sleep hot key Fn-F7
"Hard Disk Drive" is not [Disabled] in System Security of BIOS SETUP.
"Hard Disk 0" is not [None] in Basic System Configuration of BIOS SETUP.
If the waiting time determined by the computer's HPM unit elapses without any
system activity.
If a battery low condition takes place, the computer enters hibernation mode in
about three minutes. The Sleep Upon Battery-low parameter in Setup must be
set to [ENABLED].
Invoked by the operating system power saving modes
Except the RTC, KB controller and power switch, all the system components are
off.
Pressing the power switch.
Resume Timer matched
Pointing device is idle until Display Standby Timer times-out or LCD cover
is closed.
All the system components are on except LCD backlight and CRT
horizontal frequency output (if CRT is connected)
Any keystroke (Internal KB or External KB)
Pointing device activity
Description
Description
1-27