Windows – Why does the monitor power off despite the power plan telling it not to

displaypower-managementwindows 7

I am developing a web thin-client for an information kiosk running Win7. I make sure the screen saver is turned OFF and the "Turn off display" setting is set to NEVER.

After I leave the kiosk for part of the day (have not measured exactly how long… I am in classes and meetings) I return to find the video card to our projectors has turned off, defaulting to "no signal" displayed at the kiosk. (less than desirable)

After kicking the mouse, the display turns back on and I look to find the Turn Off Display Setting has reset to "15 min".

I've seen similar questions having problems NOT shutting off according to the power plan. This problem is the opposite… Display shuts off, ignoring the power plan.

Thoughts?

Best Answer

This Microsoft Support article may explain this mystery:

The "Turn off the display" setting may change unexpectedly when you configure the "Put the computer to sleep" setting in Windows Vista :

the Turn off the display setting is automatically set to the next shortest value when you configure the Put the computer to sleep setting.

Catch 22: This means that whenever you set the Put the computer to sleep setting to Never, the Turn off the display setting is changed automatically by Windows to a shorter time-period.

Solution:

To work around this behavior, set the Turn off the display setting to the value that you want, and then click Save Changes.

and, of-course, do not touch Put the computer to sleep afterward.

Related Question