Sleep When turn off LCD Monitor

Is it possible to trigger pm-suspend when I turn off / turn on my desktop LCD monitor?

Hi,
interesting idea. Have a look at:
http://en.wikipedia.org/wiki/Display_Data_Channel
and
http://ddccontrol.sourceforge.net/
I managed to switch the Input (HDMI and DVI) on my monitor with this tool some time ago. So it should be possible to get the state of the monitor too.
Regards
redada

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