Command line for 'Suspend' in Ubuntu Desktop Power Off

AugustGene · 01-08-2022, 03:50 PM

I would like to learn the process for determining the command line for Suspend in the Power Off section of Ubuntu desktop.

Mike_Walsh · 01-08-2022, 06:21 PM

I don't have a clue as to how the command that enables suspend was determined OR arrived at. All I can tell you is that the same command has been doing exactly this for many, many years:-

Code:

echo -n mem > /sys/power/state

Don't ask me how or why it works; I suspect some of LQ's veterans may be able to. All I know is that it does....and that's all I'm concerned about.

Mike.

frankbell · 01-08-2022, 08:14 PM

I have used

Code:

pm-suspend

in the past.

This should help: https://www.cyberciti.biz/faq/linux-...op-netbook-pc/

ondoho · 01-09-2022, 05:35 AM

Quote:

Originally Posted by AugustGene

I would like to learn the process for determining the command line for Suspend in the Power Off section of Ubuntu desktop.

Try

Code:

systemctl suspend

clcaev · 06-04-2022, 03:18 PM

Quote:

Originally Posted by frankbell

I have used

Code:

pm-suspend

in the past.

The past works. The future doesn't. I'll use `pm-suspend` thank you very much.

The documentation and help for `systemctl suspend` is lacking, debugging is a challenge. The lack of error reports may signal a choice to give up on it rather than a signal that it's working properly.

teckk · 06-04-2022, 04:09 PM

Quote:

The documentation and help for `systemctl suspend` is lacking,

Code:

man systemctl

https://man.archlinux.org/man/systemctl.1

Code:

poweroff

Shut down and power-off the system. This is mostly equivalent to systemctl start poweroff.target --job-mode=replace-irreversibly --no-block, but also prints a wall message to all users. This command is asynchronous; it will return after the power-off operation is enqueued, without waiting for it to complete.
If combined with --force, shutdown of all running services is skipped, however all processes are killed and all file systems are unmounted or mounted read-only, immediately followed by the powering off. If --force is specified twice, the operation is immediately executed without terminating any processes or unmounting any file systems. This may result in data loss. Note that when --force is specified twice the power-off operation is executed by systemctl itself, and the system manager is not contacted. This means the command should succeed even when the system manager has crashed.

...

suspend

Suspend the system. This will trigger activation of the special target unit suspend.target. This command is asynchronous, and will return after the suspend operation is successfully enqueued. It will not wait for the suspend/resume cycle to complete.