Users Guide

Configuring system wake-up from low-power states (S3/S4/S5)—Real-Time Clock
(RTC)
1. Sync the time between the Edge Gateway and operating system:
(root)# hwclock --hctosys
2. Obtain the RTC timer sysfs:
(root)# ls -a /sys/class/rtc/rtc0
3. Clean-up the timer:
(root)# echo 0 > /sys/class/rtc/rtc0/wakealarm
4. For example, set the wake-up event for 60 seconds:
(root)# echo +60 > /sys/class/rtc/rtc0/wakealarm
5. For example, place the Edge Gateway in suspend mode:
(root)# systemctl suspend
If successful, the RTC will wake up the Edge Gateway in 60 seconds.
Configuring system wake-up from low-power states (S3/S4/S5)—LAN
1. Enable Wake on LAN 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=enable
2. Enable Wake on LAN in nmcli (enabled by default).
# nmcli c show “Wired connection 1” | grep wake
802-3-ethernet.wake-on-lan: magic
# nmcli c show “Wired connection 2” | grep wake
802-3-ethernet.wake-on-lan: magic
3. Make sure the ethernet connection is up and running with the assigned IP address.
4. Perform sleep.
# sudo systemctl sleep
Or, perform hibernation.
# sudo systemctl hibernate
5. Use another system to wake from LAN (Supported tools: wakeonlan and etherwake).
# sudo wakeonlan MAC
# sudo etherwake MAC
Ubuntu Network Manager
Network-Manager is a native Ubuntu Server connection manager. The application can be used to configure the Edge Gateway
so that it is automatically-detected and connected to the network. The application can be used to configure multiple network
devices.
A command-line utility nmcli is included with Network-Manager to support non-graphical user interface configurations.
NOTE: For more information about Network-Manager, see wiki.archlinux.org/index.php/NetworkManager.
Setting up the operating system 79