I upgraded my long-standing Windows Vista desktop to Windows 7 over the last weekend, and now I notice my three monitors do not turn off after the stipulated 15 minutes as specified in the Power options. The screens go black like a blank screen saver (even when no screen saver is defined), but it is obvious from the monitors' power buttons they are not put into standby like in the Vista days; remaining blue instead of orange, and the mouse cursor is still around.
The ATI catalyst drivers for my Powercolor Radeon HD5770 PCS+ card (attaching one DisplayPort, two DVI) have been updated but yield no change in behaviour. Any ideas what else I can check to investigate this?
UPDATE 20 Apr
Seems like last night it could standby the displays. I need to further observe this to see if I can figure about a pattern.
UPDATE 21 Apr
It appears that, when i connect to the desktop computer with Remote Desktop, the physical monitors get switched on. They won't get dismissed until i log on to the physical session. So now lies the question of how not to get the monitors to react to a Remote desktop connection.
UPDATE 4 Jul
"Interesting". today i see the main (DisplayPort) monitor going into standby, while the two side monitors remain on. i am totally baffled by Windows 7's behaviour when it comes to deciding which monitor to power down.