Screen flickers at 60 hz, but not at 50 hz.

[Fapaz]

I don't know why this is. I'm using HDMI for display 1 (the flickering one) and DVI for Display 2 (It's perfectly fine).

As stated, the screen flicks only at 60hz. 50hz is fine, but I don't know if there's any downfall of using it at 50hz.

The GPU clock is 822 mhz, it's not going to the standard (because I have two monitors) which is supposed to eliminate the flicker but it's still there at 60hz.

Any ideas? The GPU is a GTX 560

Specs:
GTX 560 @ 822 / 1010 (2d) and 941 / 1069 (3d)
Q9450 @ 3.3 ghz
4gam ram @ 800 mhz
450 watt corsair power supply
ga-g31m-es2l mobo

 

[Kiiro Neko]

Download nvidia inspector. It allows you to change the power state of the card (P0 full 3D, P8 Video, P12 idle) manually, I use it everyday since I don't want my card sucking up all that juice just browsing the net.

http://www.techspot.com/downloads/5077-nvidia-inspector.html

See if changing it to P12 helps.

http://img.techpowerup.org/120823/nvidia_20120823_101245.png

See where it says Show Overclocking? Right click that then click Multi Display Power Saver. (Also huge tip, the clocks not going down on the cards don't even eliminate flicker - that's complete rumor. I run my card at 50 core/100 shader/135 memory and there is no flicker with my two monitors. They're even different resolutions!)

If this doesn't help try plugging in the DVI cord from display 2 to the display 1 monitor, and the HDMI cord from display 1 to display 2. (If possible)!

If not possible, try unplugging the DVI monitor leaving only the flickering monitor connected. If it still flickers it's more than likely the monitors board gone bad.

Here is a link on how to set up the dual monitor power saver if you don't understand how I explained it.

http://httputility.com/Article/dual-monitor-power-saving-nvidia

 

[Fapaz]

Thanks for your reply. I'll check out NVIDIA Inspector, ATM I'm using EVGA Precision X for my profiles but it doesn't swap back to the 2d profile after a 3d session. Hopefully inspector would.

Also, I managed to fix the problem by lowering the brightness on my monitor. However, wouldn't that imply that the monitors backlight is dying?

 

[Kiiro Neko]

Is it an LED monitor? Usually LED monitors don't go bad for a very, very long time!
If it isn't an LED monitor and you've had it for a few years now, the back light is more than likely dying. One thing you can check is the power connector for the monitor -
if it's loose or the wire itself powering the monitor has gone bad, it probably can't put out enough power to do 60 hz while maintaining a high level of brightness. If your monitor just has one of those normal 3 prong female connectors, try swapping it out with another 3 prong connector.

If that doesn't help it could be a few different things. Since it's still showing a picture and the back light is still working, you might be able to take it to a repair shop to get it fixed since the board or the back light is probably shot.

 

[Sunius]

What is your monitor? Are you using a TV? Your monitor native refresh rate might be 50 Hz.

 

[InvalidError]

Is it an LED monitor? Usually LED monitors don't go bad for a very, very long time!

Even CCFL backlights should last several years.

The main problem with LCD screens is the same as PCs: crappy PSU. I have had to repair both of my LCDs' PSUs 2-3 years after purchase.

 

[Fapaz]

It's a fairly modern HDMI LG Monitor "Flatron". So I'm almost certain its native refresh rate would be 60hz.