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AMT Power States

Possible power actions are listed in the tables below. Power actions are specified by number.

To obtain information about power actions, use the following methods:

Start State or Current Power State

Consider the current state of the system when implementing a possible action, for example:

  • Reset to BIOS implies that the current system state is on or powered up.
  • Power up to BIOS implies that current system state is off or powered down.
  • Hibernate implies that the current system state is powered up.

If the system is already powered up, choosing to Power Up to BIOS will not have any effect on the system. A better choice is Reset to BIOS.

Out-of-band

The power actions below can be used in-band or out-of-band.

Commands 100 and above use a combination of HW level power controls (i.e., 2, 5, 8, 10) and some boot option, such as Boot to BIOS.

Action # Power Action Start State Transition Description ACPI State(s)
2 Power up/on Powered down/off, Asleep, Hibernating Power up/on fully G0/S0
5 Power cycle Powered up/on Transition to minimal power state and then power up/on fully G2/S5 > G0/S0
8 Power down/off (hard) Powered up/on Transition to a fully powered down state G2/S5
10 Reset Powered up/on Perform hardware reset on the bus N/A
100 Power up to BIOS settings Powered down/off Power to BIOS to verify or modify system configuration G2/S5
101 Reset to BIOS settings Powered up/on Perform hardware reset on the bus to BIOS to verify or modify system configuration G2/S5
400 Reset to PXE Powered up/on Reset to pre-boot execution environment (PXE)(i.e., a network boot N/A
401 Power on to PXE Powered down/off Power up/on fully to pre-boot execution environment (PXE) (i.e., a network boot) N/A

In-band Required

The power actions below require an in-band agent, Local Management Service (LMS), or Intel® Integrated Management and Security Status (Intel® IMSS).

LMS is a service that runs locally on an Intel AMT device and enables local management applications to send requests and receive responses to and from the device. The LMS listens for and intercepts requests directed to the Intel AMT local host and routes them to to the Management Engine via the Intel Management Engine Interface (MEI) driver.

Installing LMS and Drivers

The service installer is packaged with the Intel MEI drivers on the OEM websites. If Windows OS is reimaged or reinstalled, only the Intel MEI Driver is reinstalled, not LMS or IMSS.

If the LMS is not installed, visit the OEM website and look for download packages for Intel® IMSS or the Intel CSME driver.

Action # Power Action Start State Transition Description ACPI State(s)
4 Sleep (deep) Powered up/on Transition to a standby state of low-power usage and store system context (e.g., open applications) in memory G1/S3
7 Hibernate Powered up/on Transition to zero power usage and store system context in non-volatile storage G1/S4
12 Power down/off (soft) Powered up/on Transition to a very minimal power state G2/S5
14 Soft reset Powered up/on Perform a shutdown and then a hardware reset N/A

Alternative Boot Options

Currently, the Toolkit doesn't natively support secure erase or 200-level calls.

Action # Power Action Start State Transition Description
104 Reset to secure erase Powered up/on Perform hardware reset on the bus to secure erase, a process of completely erasing a solid state drive (SSD)
200 Reset to IDE-R floppy disc Powered up/on Perform hardware reset on the bus to a peripheral IDE-R drive, usually reserved for a remote ISO boot
201 Power on to IDE-R floppy disc Powered down/off Power up/on fully to a peripheral IDE-R drive, usually reserved for a remote ISO boot
202 Reset to IDE-R CD-ROM Powered up/on Perform hardware reset on the bus to a peripheral IDE-R CD-ROM drive, usually reserved for a remote ISO boot
203 Power on to IDE-R CD-ROM Powered down/off Power up/on to the bus to a peripheral IDE-R CD-ROM drive, usually reserved for a remote ISO boot
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