Intel Desktop Board D915GEV BOXD915GEV Manual De Usuario
Los códigos de productos
BOXD915GEV
Product Description
37
1.12.1
ACPI
ACPI gives the operating system direct control over the power management and Plug and Play
functions of a computer. The use of ACPI with these boards requires an operating system that
provides full ACPI support. ACPI features include:
• Plug and Play (including bus and device enumeration)
• Power management control of individual devices, add-in boards (some add-in boards may
functions of a computer. The use of ACPI with these boards requires an operating system that
provides full ACPI support. ACPI features include:
• Plug and Play (including bus and device enumeration)
• Power management control of individual devices, add-in boards (some add-in boards may
require an ACPI-aware driver), video displays, and hard disk drives
• Methods for achieving less than 15-watt system operation in the power-on/standby
sleeping state
• A Soft-off feature that enables the operating system to power-off the computer
• Support for multiple wake-up events (see Table 9 on page 39)
• Support for a front panel power and sleep mode switch
• Support for multiple wake-up events (see Table 9 on page 39)
• Support for a front panel power and sleep mode switch
Table 7 lists the system states based on how long the power switch is pressed, depending on how
ACPI is configured with an ACPI-aware operating system.
ACPI is configured with an ACPI-aware operating system.
Table 7.
Effects of Pressing the Power Switch
If the system is in this state…
…and the power switch is
pressed for
pressed for
…the system enters this state
Off
(ACPI G2/G5 – Soft off)
(ACPI G2/G5 – Soft off)
Less than four seconds
Power-on
(ACPI G0 – working state)
(ACPI G0 – working state)
On
(ACPI G0 – working state)
(ACPI G0 – working state)
Less than four seconds
Soft-off/Standby
(ACPI G1 – sleeping state)
(ACPI G1 – sleeping state)
On
(ACPI G0 – working state)
(ACPI G0 – working state)
More than four seconds
Fail safe power-off
(ACPI G2/G5 – Soft off)
(ACPI G2/G5 – Soft off)
Sleep
(ACPI G1 – sleeping state)
(ACPI G1 – sleeping state)
Less than four seconds
Wake-up
(ACPI G0 – working state)
(ACPI G0 – working state)
Sleep
(ACPI G1 – sleeping state)
(ACPI G1 – sleeping state)
More than four seconds
Power-off
(ACPI G2/G5 – Soft off)
(ACPI G2/G5 – Soft off)