root@hoshi:/var/log# systemctl status suspend.target
● suspend.target - Suspend
Loaded: loaded (/lib/systemd/system/suspend.target; static; vendor preset: enabled)
Active: inactive (dead)
Docs: man:systemd.special(7)
root@hoshi:/var/log# 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.