Setting up Machines' BIOS

In this part of the document, we will tell you how to configure the Machine's BIOS to meet the requirements for the Wake-on-LAN operation by Remote Shutdown to succeed. All relevant settings are usually found in the BIOS section called Power Management. They may also be located in a different place – refer to the motherboard manual to locate them. The following motherboard settings will enable WOL.

Power Management

Please note that power management features, such as WOL, are closely related to power management itself. Thus, you will most likely need to enable the ACPI or APM support for the motherboard. ACPI and APM are the two main industry standards for power management (with ACPI being the newest and more advanced one). If your motherboard supports WOL, this implies support of either ACPI or APM. You should make sure that whichever one is supported by your motherboard is enabled in the BIOS settings.

If the WOL and power-off state options are not there or not accessible, try enabling ACPI/APM. In some BIOS setups, the ACPI option is called IPCA.

Power-Off State

Some BIOS setups have the following names for this option:

  • Power-off state/method
  • ACPI suspend type
  • ACPI standby state

Most likely, you will need to set this to S3/STR for the motherboard to be able to wake up on various events. STR (Suspend To RAM) is a special power-off state which leaves certain parts of the machine in a "sleeping" state but still aware of their surroundings. You could say that the machine is "sleeping with one eye open".

WOL Support

Finally, look for the WOL option. Usually, it is named WOL and found in the Power Management section. However, it may also be labeled PME or Wake (up) on LAN/Ethernet/PME# and found under a different BIOS section.

Most of modern motherboards do not have the WOL option – in such case, Power On By PCI Devices (Power On By PCIE Devices) from the APM Configuration section found on the Power tab should be enabled instead.

After you have completed the steps described above, the Machine BIOS is configured to support Wake-on-LAN.