Intel D925XBC, D925XCV System States and Power States, Effects of Pressing the Power Switch

Product Description

Table 8.	Effects of Pressing the Power Switch
		…and the power switch is
If the system is in this state…		pressed for	…the system enters this state
Off		Less than four seconds	Power-on
(ACPI G2/G5 – Soft off)			(ACPI G0 – working state)
On		Less than four seconds	Soft-off/Standby
(ACPI G0 – working state)			(ACPI G1 – sleeping state)
On		More than four seconds	Fail safe power-off
(ACPI G0 – working state)			(ACPI G2/G5 – Soft off)
Sleep		Less than four seconds	Wake-up
(ACPI G1 – sleeping state)			(ACPI G0 – working state)
Sleep		More than four seconds	Power-off
(ACPI G1 – sleeping state)			(ACPI G2/G5 – Soft off)

1.14.1.1System States and Power States

Under ACPI, the operating system directs all system and device power state transitions. The operating system puts devices in and out of low-power states based on user preferences and knowledge of how devices are being used by applications. Devices that are not being used can be turned off. The operating system uses information from applications and user settings to put the system as a whole into a low-power state.

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