Acpi Settings; Suspend Mode; Acpi Version Features; Usb S4 Wakeup - VIA Technologies VB7009 User Manual

VIA VB7009 User Manual

6.30.5. ACPI Settings

ACPI grants the operating system direct control over system power management. The ACPI Configuration
screen can be used to set a number of power management related functions.

Figure 78: Illustration of ACPI Configuration screen

6.30.5.1. Suspend Mode

The Suspend Mode field has three selectable options.
S1 (POS)
S1/Power On Suspend (POS) is a low power state. In this state, no system context (CPU or chipset) is lost
and hardware maintains all system contexts.
S3 (STR)
S3/Suspend To RAM (STR) is a power-down state. In this state, power is supplied only to essential
components such as main memory and wakeup-capable devices. The system context is saved to main
memory, and context is restored from the memory when a "wakeup" event occurs.
Auto
When the Suspend Mode is set to Auto, the operating system will control the power state.

6.30.5.2. ACPI Version Features

The ACPI Version has three selectable version options.
ACPI v1.0
Supports ACPI v1.0
ACPI v2.0
Supports ACPI v2.0
ACPI v3.0
Supports ACPI v3.0

6.30.5.3. USB S4 Wakeup

The USB S4 WakeUp enables the system to resume through the USB device port from S4 state. There are
two options: "Enabled" or "Disabled".
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