System Power Management

The overall system can be in one of five system power states as described below:

Legacy

ACPI mode

Power Management

Mode

 

 

 

Mech. Off (G3)

All devices in the system are turned off completely.

Off

 

 

Soft Off (G2/S5)

OS initiated shutdown. All devices in the system are

 

 

turned off completely.

 

 

 

 

Working (G0/S0)

Individual devices such as the CPU and hard disk

 

 

may be power managed in this state.

 

 

 

 

S3 Sleeping State

CPU set power down

 

 

VGA Suspend

 

 

PCMCIA Suspend

On

 

Audio Power Down

 

 

Hard Disk Power Down

 

 

CD-ROM Power Down

 

 

Super I/O Low Power mode

 

 

 

 

S4 Sleepting State

Also called Hibernate state. System Saves all

 

 

system states and data onto disk prior to power off

 

 

the whole system.

 

 

 

Chapter 1

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Acer 4150, 4650 manual System Power Management, Legacy Acpi mode Power Management Mode