Very Computer

Hi,

Is there an easy way to detect when the screen has been blanked, say after
an xset timeout, or the activation of a blank screensaver? Basically, I
have a shell script that I want to run when the screen is blank. An
alternative would be to check the keyboard + mouse idle time (the trigger
for blanking), but I don't know how to do that either. If there's a simple
(ie not involving C-coding!) way to do that, that would be fine instead.

At the moment, I'm just getting the idle time from the output of `who -i',
but that is not very satisfactory as it only checks terminals, and not
activity in Emacs windows, for example.

TIA,

Glenn

Or simila

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Tad Williams has an interesting new fantasy: http://www.shadowmarch.com/

xset s 1; sleep 5; xset q >& xset.out

Output of xset states "Monitor is On". This technique will detect when the
monitor is in suspend, but it doesn't seem to do anything when it's blank
but still on.

Glenn

Alternatively, perhaps inspection of the xset q source might help?

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"An enemy will usually have three courses open to him.  Of these he will
select the fourth."                                    -- Helmuth von Moltke