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Power management setup – Foxconn Destroyer User Manual

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Power Management Setup

ACPI (Advanced Configuration and Power Interface) is an open industry standard that defines
power and configuration management interfaces between an operating system and the BIOS.
In other words, it is a standard that describes how computer components work together
to manage system hardware. In order to use this function the ACPI specification must be
supported by the OS (for example, Windows2000 or WindowsXP).
ACPI defines five sleeping states, they are :

S1 - The S1 sleeping state is a low wake latency sleeping state. In this state, no system

context is lost (CPU or chip set) and hardware maintains all system context. (also called

Power On Suspend)

S2 - The S2 sleeping state is a low wake latency sleeping state. This state is similar to

the S1 sleeping state except that the CPU and system cache context is lost (the OS

is responsible for maintaining the caches and CPU context). Control starts from the

processor’s reset vector after the wake event.

S3 - The S3 sleeping state is a low wake latency sleeping state where all system context is lost

except system memory. CPU, cache, and chip set context are lost in this state. Hardware
maintains memory context and restores some CPU and L2 configuration context. Control
starts from the processor’s reset vector after the wake event. (also called Suspend to

RAM)

S4 - The S4 sleeping state is the lowest power, longest wake latency sleeping state supported

by ACPI. In order to reduce power to a minimum, it is assumed that the hardware platform

has powered off all devices. Platform context is maintained. (also called Suspend to

Disk)

S5 - The S5 state is similar to the S4 state except that the OS does not save any context. The

system is in the “soft” off state and requires a complete boot when it wakes. Software
uses a different state value to distinguish between the S5 state and the S4 state to allow
for initial boot operations within the BIOS to distinguish whether or not the boot is going to

wake from a saved memory image.

Phoenix - AwardBIOS CMOS Setup Utility

Power Management Setup

ACPI Function

[Enabled]

Item Help

ACPI Suspend Type

[S3(STR)]

Power Button

[Instant-Off]

Menu Level ►

PWRON After PWR-Fail

[Off]

HPET Support

[Enabled]

** Power Management Events **

Resume by PCI/PCIE PME

[Disabled]

USB KB/MS Resume from S3

[Disabled]

Resume by Alarm

[Disabled]

x Date of Month Alarm

0

x Time(hh:mm:ss) Alarm

0 : 0 : 0

x Power On by Button

Enabled

PS/2 KB Resume from S3

[Disabled]

x KB Resume Password

Enter

x Hot Key Resume

Ctrl-F1

↑↓→←:Move Enter:Select +/-/PU/PD:Value F10:Save ESC:Exit F1:General Help

F5:Previous Values F7:Optimized Defaults

Enabled