8.7 Power Management
Select the 'Power Management' submenu from the 'Main Menu' and press enter or
press the related letter in front of the menu to enter the 'Power Management' setup
screen. This menu is used for setting ACPI and APM configuration.
Feature
Options
Description
BIOS PM at Bootup
Disabled
Enabled
BIOS will turn on Legacy PM before booting the OS.
APM Available
Yes
No
Select APM Interface available for use.
ACPI Available
Yes
No
Select ACPI Interface available for use.
CPU Clock Gating
Disabled
Enabled
Set to
Enabled
for power savings.
Chipset Clock Gating
Disabled
Enabled
Set to
Enabled
for power savings
Active Cooling TP
Disabled
40°C
50°C
60°C
70°C
Determines the active cooling trip point for the CPU fan in ACPI mode.
Power Loss Control
(see Note 2 )
Remain Off
Turn On
Last State
Specifies the mode of operation if an AC power loss occurs.
Remain Off
keeps the power off until the power button is pressed.
Turn On
restores power to the computer.
Last State
restores the previous power state before power loss occurred.
Note: Only works with an ATX type power supply.
Power Button Control
Instant Off
ACPI Mode
Use ACPI Mode with 4 seconds Soft Off or not.
Suspend Mode Control
S1-State
S3-State
Determines if the system suspends to S3 or to S1 power save state.
CMB Shutdown Mode
G3 Mech Off
S5 Soft Off
Determines the shutdown behavior of the Control Method Battery.
G3
Mech Off
switch off all supply voltages.
S5 Soft Off
switch off all supply voltages except 5V Standby.
Watchdog ACPI Event
(see Note 1 )
Shutdown
Restart
Sleep
Selects the event that is initiated by the watchdog APCI event (see note 1
below).
GPE1 Function
No Function
Lid Switch
Determines the functionality of GPE1 (pin 42 of X4)
Note: Resume with LID switch is only available from S1 state.
GPE2 Function
No Function
Sleep Button
Determines the functionality of GPE2 (pin 89 of X4)
Note: Sleep button option in ACPI mode is only available when Suspend
Mode Control is set to S3 state.
Note 1
In ACPI mode it is not possible for a “Watchdog ACPI Event” handler to directly restart
or shutdown the OS. For this reason the congatec BIOS will do one of the following:
For Shutdown: An over temperature notification is executed. This causes the OS to shut
down in an orderly fashion.
Copyright © 2006 congatec AG
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