Users Guide

Table 15. Values and configuration options for the ignition pin

ignore

Do nothing

poweroff (default) Shut down the system

reboot

Reboot the system

halt

Halt the system

kexec

Direct-boot a new kernel

suspend

Suspend the system

hibernate

Hibernate the system

hybrid-sleep

Suspend to both disk and RAM

lock

Screen-lock all running sessions.

For example, to reboot the system when the power button is pressed, run the command:

$ snap set core system.power-key-action=reboot

System Power Management

Configuring low power states: S3 and S4

Configure sleep state–S3

$ sudo systemctl suspend

Configure hibernate state–S4

$ sudo systemctl hibernate

Rebooting or power off

To reboot the system

$ sudo reboot

To power off

$ sudo poweroff

Configuring system wake-up from LAN or WLAN

1. Enable Wake on LAN in the BIOS program. For more information on accessing the BIOS program, see Accessing BIOS settings

2. Connect the system to a wireless network.

$ sudo network-manager.nmcli dev wifi connect $SSID password $PSK ifname wlan0

3. Enable Wake on LAN.

$ sudo iw phy0 wowlan enable magic-packet

4. Recheck the support status.

$ sudo iw phy phy0 wowlan show

5. Make sure wlan0 is up and running with IP address.

6. Perform sleep.

$ sudo systemctl sleep

Or, perform hibernation.

$ sudo systemctl hibernate

7. Use another system to wake from wlan (Supported tools: wakeonlan, and etherwake).

$ sudo wakeonlan MAC

$ sudo etherwake MAC