How to suspend to RAM in terminal?

[fidesratioque]

More specifically, I'm interested in configuring a keyboard shortcut so that I can suspend to RAM faster.

However, to do that I guess I would need to know which terminal command to run to suspend to RAM to begin with.

Any tips, folks? Thanks a lot for any input.

[Rog131]

Re: How to suspend to RAM in terminal?

> Re: How to make suspend/hibernate buttons work

...
Remote application: org.kde.powerdevilsystem
Remote object: /modules/powerdevil
Function: suspend
Arguments: 2

Hibernate is set up exactly the same but the argument is 4 instead of 2. There
are also other options available (shutdown, etc.) - see the enum IdleAction in
PowerDevil's source code
kdebase/workspace/powerdevil/daemon/PowerDevilDaemon.h

=> with the qbus:

qdbus org.kde.powerdevilsystem /modules/powerdevil suspend 2

or/and:

qdbus org.kde.powerdevilsystem /modules/powerdevil suspend 4

This seems to be same as: K > Leave > Hibernate (Suspend to Disk).


More of the qbus:

> D-Bus wiki
> Topic: shutdown command in kde4 [solved]

[fidesratioque]

Re: How to suspend to RAM in terminal? (SOLVED)

Thanks a lot, Rog. I'm going to test this out momentarily. I appreciate the help.

[fidesratioque]

Re: How to suspend to RAM in terminal?

=> with the qbus:

qdbus org.kde.powerdevilsystem /modules/powerdevil suspend 2

or/and:

qdbus org.kde.powerdevilsystem /modules/powerdevil suspend 4

Works OK. The first one crashed my system (it wouldn't suspend and I had to reboot).

The second one logged me out of my session and suspended to RAM, which is basically what I was looking for but with that added extra (previously, I had just been suspending to RAM, while leaving the session unlocked).

OK, I am in qdbusviewer and looking powerdevilsystem. Do you know where I can find those arguments?

I have a kind of menu-ish thing that I can browse down and go down a tree in, but I'm not sure where to go.

Thanks a lot for the insight.

[dibl]

Re: How to suspend to RAM in terminal?

I'm interested in configuring a keyboard shortcut so that I can suspend to RAM faster.

With the kpowersave icon on the panel, I am exactly two mouse clicks, a right and a left, away from S2RAM. How much faster are you thinking it is going to be? I'm having some fun imagining why you need instantaneous S2RAM!

[Rog131]

Re: How to suspend to RAM in terminal?

Afterthought: I'm using Kubuntu 9.04 Jaunty Jackalope, KDE 4.2


There is a plasma-widget script > Suspend Applet

Description:
Suspend Applet is a small applet designed to quickly suspend or hibernate your computer. It also allows for turning off your display (only if PowerDevil is active).

Do you know where I can find those arguments?

As said:

enum IdleAction in
PowerDevil's source code
kdebase/workspace/powerdevil/daemon/PowerDevilDaemon.h

one place to look at the net => PowerDevilDaemon.h

None = 0,
Standby = 1,
S2Ram = 2,
S2Disk = 4,
Shutdown = 8,
Lock = 16,
ShutdownDialog = 32,
TurnOffScreen = 64

The first one crashed my system (it wouldn't suspend and I had to reboot).

Here it was working - ?? - Do you have a swap partition ? The > All About Linux Swap Part 3: Analysis tells:

Because of the ability to hibernate - if you plan to use this functionality - allocate at least as much swap as you have of system memory. This is especially important during partitioning, because Linux cannot hibernate to a swap file.