阻止ubunto 自动休眠（挂起）的方法

How To: Disable Sleep on Ubuntu Server

Confirm Sleep Status with systemd

IMPORTANT: I didn’t run this command on server, so this is example from another system: I’m running it on my XPS laptop with Ubuntu, just to show you expected output.

As you can see, my laptop rests well and often:

greys@xps:~ $ systemctl status sleep.target
● sleep.target - Sleep
Loaded: loaded (/lib/systemd/system/sleep.target; static; vendor preset: enabled)
Active: inactive (dead)
Docs: man:systemd.special(7)
Feb 24 13:18:08 xps systemd[1]: Reached target Sleep.
Feb 26 13:29:31 xps systemd[1]: Stopped target Sleep.
Feb 26 13:29:57 xps systemd[1]: Reached target Sleep.
Feb 26 13:30:19 xps systemd[1]: Stopped target Sleep.

Disable Sleep in Ubuntu with systemd

This is what I did on my server:

root@server:/ # sudo systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target
Created symlink /etc/systemd/system/sleep.target → /dev/null.
Created symlink /etc/systemd/system/suspend.target → /dev/null.
Created symlink /etc/systemd/system/hibernate.target → /dev/null.
Created symlink /etc/systemd/system/hybrid-sleep.target → /dev/null.
root@server:/etc/pm/sleep.d#

This is obviously a very simple way of disabling power management, but I like it because it’s standard and logical enough – there’s no need to edit config files or create cronjobs manually controlling sleep functionality.

The service is dead, no power management is happening and most importantly, my server has been up for 12 hours now.

greys@server:~$ systemctl status sleep.target
● sleep.target
Loaded: masked (Reason: Unit sleep.target is masked.)
Active: inactive (dead)

(re) Enabling Sleep in Ubuntu with systemctl

When the time comes and I would like to re-enable power management and sleep/hibernation, this will be the command I’ll run:

root@server:/etc/pm/sleep.d# sudo systemctl unmask sleep.target suspend.target hibernate.target hybrid-sleep.target

That’s all for now. Have a great day!

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