My workstation has two monitors and Windows 7 (64bit). Sometimes when I lock my computer and later return and unlock it, the second monitor won't wake up. I have to turn that monitor off and on to get the picture back. They are identical monitors. The "#2" monitor is set as the main display, if that matters.
I glanced at the power saving settings but didn't see anything noteworthy, and I'm not sure what I would be looking for (or if that is the right place to look) in the first place.
Addendum: it also happens other times. E.g. I want to run a batch file I am working on as administrator. The screen flickers as the Win 7 dialog pops up prompting me for approval. Sometimes when that happens, monitor #2 doesn't reappear (that has happened three times in the last two days, over several dozen such instances).
- Monitors are Dell E197FPs
- When the secondary monitor does not come back on, windows still recognizes it as best I can tell. E.g. if I go to screen resolution it shows both monitors and I can change settings on both.
- Video Card is an nVidia geforce 7600 GS.
- "Monitor #2" (again, set as the primary) is plugged into the DVI port via a DIV -> VGA adapter. "Monitor #1" is plugged into the secondary VGA port.
- Drivers are v197.45
It's not the end of the world but it is annoying. Help?