User manual

Kontron Compact Computers AG SMX945 Detailed Manual V1.1
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8.3. ACPI Suspend Modes and Resume Events
The SMX945 supports the S1 (POS = Power On Suspend) and S3 (STR = Save to RAM) states. S4 (Save to
Disk) is not supported by the BIOS (S4_BIOS) but is supported by the following operating systems (S4_OS =
Hibernate):
 Win2K
 WinXP
The following table lists the “Wake Events” that resume the system from both S1 or S3 unless otherwise
stated in the “Conditions/Remarks” column.
Wake Event Conditions/Remarks
Power Button Wakes unconditionally from S1-S5
GPE1# Only if configured as Lid Switch in the ACPI setup menu.
Additionally the lid button has to be activated using the Windows Power
Options. The best way to use it is to go to Standby on lid button, press and
wake from Standby on lid button release.
GPE2# Set GPE2 Function node to Sleep Button in the ACPI setup menu or set
Resume On Ring to Enabled in the Power setup menu.
Onboard LAN Event Device driver must be configured for Wake On LAN support.
For configuration go to Device Manager, Network Adapters, Intel(R)
PRO/100 VE Network Connection and launch properties.
Power Management:
Allow this device to bring the computer out of standby.
Advanced  Wake on LAN Options  Properties:
Enable PME:Enabled
Wake On Link Settings: Forced
Wake On Settings: Wake on Magic & Directed
Using this configuration the system will wake from Standby in case a magic
packet or a directed packet is sent.
Directed packet: e.g. ping to last IP / MAC address.
If there is no network cable connected to the system when it goes to Standby
mode, the system will wake from Standby as soon as a cable is connected.
SMBALERT# Wakes unconditionally from S1-S5
PCI Express WAKE# Wakes unconditionally from S1-S3
PME# Activate the wake up capabilities of a PCI device using Windows Device
Manager configuration options for this device
or set Resume On PME# to Enabled in the Power setup menu.
USB Mouse/Keyboard Event When Standby mode is set to S1, no special action must be taken for a USB
Mouse/Keyboard Event to be used as a Wake Event.
When Standby mode is set to S3, the following must be done for a USB
Mouse/Keyboard Event to be used as a Wake Event:
USB Hardware must be powered by standby power source.
Set USB Device Wakeup from S3/S4 to ENABLED in the ACPI setup menu.
Under Windows XP add following registry entries:
Add this key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\usb
Under this key add the following value: “USBBIOSx“=DWORD:00000000
RTC Alarm Activate and configure Resume On RTC Alarm in the Power setup menu
Watchdog Power Button Event Wakes unconditionally from S1-S5
PS/2 Mouse/Keyboard Event Only can be used as a Wake Event when in S1 mode
Note...
Windows XP disables USB wakeup from S3, so this entry has to be added to re-enable it.