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
78
Setting up the operating system