/usr/sbin/screencapture and display sleep

[Fahrvergnuugen]

I posted this here because it has more to do with osx than unix.

there is this neat program in /usr/sbin called screencapture that lets you take a screen shot from the command line. extremely useful if something is messed up on your mac and you want to check on it.

the problem i'm having is that screencapture does not work when the display is asleep. I end up with an empty file.

Is there some way to activate the display remotely?

 

[ElDiabloConCaca]

Hmmm... what if the display were "awake," but turned off?

I'm thinking that if there's no signal to the display, as is what happens when it's asleep, then screencapture wouldn't work, since there's nothing on the screen!

Howabout something that wakes the computer -- perhaps it would also awaken the display sleep thing in OS X:

http://www.versiontracker.com/dyn/moreinfo/macosx/17998

 

[TommyWillB]

I have my Mac setup to NOT sleep, but the screen still sleeps find... Maybe you can do the same thing on your "headless" machine.

 

[elander]

There is a preference pane thingy called Teleport that'll "teleport" your mouse and keyboard to a remote system, if you have teleport installed on both. That way you can move the mouse on the remote system and wake the screen.

It is still a preview, not a finished application, and it doesn't allow encrypted communication. As far as I can remember though, you can set it up so it only accepts incoming signals from a given set of IP-numbers.

As a preview, it is still free:
http://www.abyssoft.com/software/teleport/

I have no affiliation with the creators, I just like the product...