Users Guide

Table 31. Power options (continued)

Power option Description

hibernate

Hibernate the system

hybrid-sleep

Suspend to both disk and RAM

lock

Screen-lock all running sessions.

NOTE: For more information about power options, see freedesktop.org/software/systemd/man/logind.conf.html.

3. Enable the power option by rebooting the system.

# sudo reboot

System Power Management

Configuring low-power states: S3 and S4

Use the following command to configure suspend state–S3:

# sudo systemctl suspend

Use the following command to configure hibernate state–S4:

# sudo systemctl hibernate

NOTE: Hibernate state is not supported if secure-boot mode is enabled.

Configuring system wake-up from low-power states (S3/S4/S5)—WLAN

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

settings. Alternatively, use Dell Command | Configure.

# sudo /opt/dell/dcc/cctk --wakeonlan=enablewakeonwlan

2. Connect the system to a wireless network.

# sudo nmcli dev wifi connect $SSID password $PSK ifname wlan0

3. Enable Wake on WLAN.

# 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 the assigned 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

Setting up the operating system