Acpi S3 (Suspend To Ram) Function - Intel i915GL User Manual

Installation

3-8 ACPI S3 (Suspend To RAM) Function

This mainboard supports the STR (Suspend To RAM) power management
scheme by maintaining the appropriate power states in the RAM interface
signals. The power source to the RAM is kept active during STR (ACPI S3).
Advanced Configuration Power Interface (ACPI) provides many Energy Saving
Features for operating systems that support Instant ON and QuickStart
function.
1. To enable STR functionality to save system power :
a. Install ACPI certified add-on cards (such as VGA, LAN, and modem cards).
b. In BIOS, under Power Management Setup (refer to Section 4), select "ACPI
Suspend Type: S3(STR)". If you have a USB mouse or keyboard, set "USB
Wake-up from S3" to "Enabled".
c. When in Windows, open the Control Panel Power Management application,
and click the Advanced tab. In the Power buttons section, select "Stand By"
from the drop-down lists.
2. To activate the STR function:
a. Click the START button and choose Shut Down.
b. In the Shut Down Windows dialog box, select the Stand By option to enter
STR mode.
The following are the differences between STR power saving mode and Sus-
pend (Power On Suspend) mode:
a. STR is the most advanced Power Management mode.
b. STR cuts all the power supplied to peripherals except to memory - max. power
saving.
c. STR saves and keeps all on-screen data including any executed applications
to RAM.
d. In STR mode, you must push the power button (connected to the onboard PW-
On of CFP pin), click your USB mouse buttons, or press your USB keyboard
keys to wake up your system to the last display.
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