5040x1050x32 goes black for a second or two - FSX freezes

[NdR]

Hi, due to elior77 topic (http://www.widescreengamingforum.com/forum/viewtopic.php?f=59&t=17827) I am able to have native resolution.
Previously I used 3840x800 - everything was OK, but now I have occasionally black screen on all monitors. Only in FSX, system is OK, watching movies are also OK. I have noticed it first time when I closed the kneeboard in FSX. During all screens black, FSX stays where it was, like the PC was frozen for a second or two - sound is disabled, aircraft is not moving and everything goes back to normal.
What could be a reason? Any help will be much appreciated.

[xmitr]

I have the same problem. It occurs in FSX and FS9. It happened in XP, Vista, and now Windows 7. I have an ATI (H.I.S.) HD3870 IceQ 512 meg card and the TH2G Digital Edition. Monitors are Acer X223W. I run a 4th monitor (NEC 17") in the second channel for 2D instrument display. The Matrox drivers and firmware and the ATI driver are the latest version.

I've done everything I can think of, reinstalls of game and system, defrag, memory tests, power supply tests, virus checks, startup with only Microsoft exe's. Nothing solves it. Maybe it's the card. I hate to spend more money to find out a more powerful card does the same thing. I haven't tried at dualhead settings rather than triplehead. Suppose that's next...

[NdR]

I have lowered a sliders a little bit and it is much better, but still not perfect. Try to go this way.

[SurlyEngineer]

Might want to check your Event Viewer and see what it says.

[NdR]

xmitr, I have lowered the sliders and it is much better. Maybe this is a way to go.
Event Viewer shows no problem.

[Butch_N]

Hi

Try turning off Anit-Aliasing in the games menu. Probably will fix it.
Turn off Vsync in the driver menu of your GFX card.

Good luck :)

[NdR]

Thanks Butch!
That was it. I turned off Vsync and set AA in nVidia panel, not FSX