[systemd] sleep.target and suspend.target. What is the difference?

The correct command is systemctl suspend or hibernate as this command uses Systemd and is preferred since 16.04.

I had the same situation on Ubuntu 20.04 with same symptoms on choosing Suspend button in Gnome as OP. systemctl suspend was not working, ...

I am trying to make my system suspend, but all of the systemd commands fail. If I try systemctl suspend I get a black screen on my monitors, fans and LEDs in ...

本篇ShengYu 要介紹在Ubuntu 下休眠的指令，Ubuntu 裡Systemd 工具提供了睡眠管理的高階命令，分別有 systemctl suspend 、 systemctl hibernate ...

Suspend the system. This will trigger activation of the special target unit suspend.target. This command is asynchronous, and will return after ...

systemctl suspend-then-hibernate initially suspends the system to RAM as long as possible, then wakes it with an RTC alarm and hibernates. The RTC alarm is set ...

systemd-suspend.service is responsible for the actual system suspend and is pulled in by suspend.target. It should not be executed directly.

systemd-suspend.service is a system service that is pulled in by suspend.target and is responsible for the actual system suspend.

I am trying to make my system suspend, but all of the systemd commands fail. If I try systemctl suspend I get a black screen on my monitors, fans and LEDs in ...

My first hypothesis is that sleep.target finishes before suspend and suspend.target finishes after resuming, which seems to be validated by this entry in the ...