9.4.1 ACPI Configuration Submenu
Feature
Options
Description
ACPI Aware O/S
No
Yes
Set this value to allow the system to utilize the Intel ACPI (Advanced
Configuration and Power Interface).
Set to
NO
for non ACPI aware operating system like DOS and
Windows NT.
Set to
YES
if your OS complies with the ACPI specification (e.g.
Windows 2000, XP)
ACPI Version Features
ACPI v1.0
ACPI v2.0
ACPI v3.0
ACPI version supported by the BIOS ACPI code and tables.
System Off Mode
G3/Mech Off
S5/Soft Off
Select the actual power down mode when the system performs a
shutdown with a congatec battery system connected.
Note: This node is only visible when the system is connected to a
congatec battery system.
ACPI APIC support
Enabled
Disabled
Set to enable to include the APIC support table to ACPI.
Suspend mode
S1 (POS)
S3 (STR)
Select the state used for ACPI system suspend.
Repost Video on S3
Resume
No
Yes
Determines whether to invoke VGA BIOS post on S3 resume
(required by some OS to re-initialize graphics).
USB Device Wakeup
From S3/S4
Disabled
Enabled
Enable or disable USB device wakeup from S3 and S4 state.
Active Cooling Trip
Point
Disabled
50, 60, 70, 80, 90°C
Specifies the temperature threshold at which the ACPI aware OS
turns the fan on/off.
Passive Cooling Trip
Point
Disabled
50, 60, 70, 80,
90
°C
Specifies the temperature threshold at which the ACPI aware OS
starts/stops CPU clock throttling.
Critical Trip Point
Disabled, 80, 85, 90,
95, 100,
105
, 110°C
Specifies the temperature threshold at which the ACPI aware OS
performs a critical shutdown.
Watchdog ACPI Event
Shutdown
Restart
Select the event that is initiated by the watchdog ACPI event. When
the watchdog times out a critical but orderly OS shutdown or restart
can be performed (see note below).
GPE1 Function
No Function
Lid Switch
Determines the functionality of GPE1 (pin 42 of X4 connector).
GPE2 Function
No Function
Sleep Button
Determines functionality of GPE2 (pin 89 of X4 connector).
Note
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.
For Restart: An ACPI fatal error is reported to the OS.
It depends on your particular OS as to how this reported fatal error will be handled when
the Restart function is selected. If you are using Windows XP/2000 there is a setting
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