[SOLVED] HowTo sleep / standby / hibernate / suspend from command line

[marcw]

In case someone else runs across this thread wondering how to use the command line to suspend (S3) in Lucid 10.04 without becoming root or using sudo, I found the answer here:

https://wiki.ubuntu.com/DebuggingGNOMEPowerManager

The short answer (for suspend) is this command (all one line):

 dbus-send --print-reply --system --dest=org.freedesktop.UPower /org/freedesktop/UPower org.freedesktop.UPower.Suspend

[dli8ilb]

marcw, when i run that command, terminal says:

Error org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.UPower was not provided by any .service files

any ideas? using 10.10

nevermind, i got it to work using HAL with:

dbus-send --system --print-reply --dest="org.freedesktop.Hal" /org/freedesktop/Hal/devices/computer org.freedesktop.Hal.Device.SystemPowerManagement.S uspend int32:0

[Yoshizmo]

Using Ubuntu 10.10 or 10.04 with default packages you can issue the command:

sudo pm-suspend

other options are:
pm-hibernate
pm-powersave
pm-suspend-hybrid

hope that helps.

[Protocol84]

I am using pam-face-authentication to replace passwords for sudo and login. No matter what I do when I suspend it has to verify me 4 times while suspending and another 4 upon resume, I thought finding a way to suspend without needing root would alleviate the problem, but it is still present even though I have tried all the ways to do so in the forum.

Any thoughts?

[Henk Poley]

I suspect during suspend the power manager will send messages to the screensaver, X desktop manager (for example gdm), etc. to lock the screen. Normally if you lock the screen 4 times in a row (using different methods) you will only need to unlock it once. But your face detection screen lock apparently figures it needs to buffer all those locks and have you unlock each of them.

Try to figure out how you can get in such a situation outside of suspending. So, try to lock the screen by timeout, and then send a lock message from commandline over SSH (or by cron).

Then you'll have a testcase for the people of pam-face-authentication.

[el_oscuro]

Using Ubuntu 10.10 or 10.04 with default packages you can issue the command:

sudo pm-suspend

other options are:
pm-hibernate
pm-powersave
pm-suspend-hybrid

hope that helps.

You also need to install pm-utils before using these commands. Otherwise works fine.

[r_mano]

...and if you want to run pm-suspend without entering any password (I use it for example with:

 
do-long-video-rendering.sh && sudo pm-suspend

...and go to sleep), you can add to the file /etc/sudoers (edit it using sudo visudo) the line:

your_user_name ALL=NOPASSWD: /usr/sbin/pm-suspend

[giannosfor]

echo 'pmi action suspend' | at now + 40 minutes

How can actually suspend or hibernate in 40 minutes?
Not echo it.

[SecretCode]

The command shown will actually suspend in 40 minutes. echo puts the quoted text into stdout, and at reads the text piped from it - not the whole echo command, just its output.

Why not try it?

[giannosfor]

Thanks i feel very stupid,do you know how to cancel it after trigger?