Dual Monitor (Main is shaking)

[badgerdaylight]

Just set up dual screens for my aunts bussiness, and when I hooked up the 2nd one the main screen started shaking at its normal rez (1920x1080). When I change the main to 1280x720 the shaking stops.

Is there any way to fix this so that the main (22inch hp) can be at max res and the 2nd (19inch dell) can be at 1280x720?

Thanks all.

 

[Cerb]

Are both using digital connections? If not, can they?

 

[LoveMachine]

Might help to know what sort of video card is driving these monitors, and what "shaking" means (e.g. side-to-side, up-down, is it constant or intermittent, etc.).

 

[Ketchup]

What are you using to set the displays? The Windows Screen Resolution page or something from your video card?

 

[badgerdaylight]

Thanks all for the replies, Its a NVIDIA GeForce 8500 GT. Using a HDMI, and a vga that connects into a vga to dvi port. Shaking meaning like if the computer screen was set up to vibrate up and down, looks like a bad connection deal but the cables are double checked already. Also using the normal screen rez page from desktop.

 

[Cerb]

If the monitor can use DVI, does the card have DVI? Your post reads somewhat ambiguous, but those that I've seen w/ HDMIs had HDMI and DVI on the card. That arrangement would allow DVI out directly.

Some cards' analog are better than others, and sometimes they just have compatibility issues.

 

[badgerdaylight]

Yes the card does have a dvi port, but the 19 inch monitor only has a vga connection so I went out and bought a female vga to male dvi adapter.

 

[LoveMachine]

I don't know that the DVI to VGA connector will do much, since it will still end up being an analog signal to the monitor. I would install the latest Nvidia drivers for this series of card and use Nvidia software (download directly from their website - it will ask you what chipset and give you the appropriate file) to adjust the settings for each monitor. Sometimes the generic Windows driver ain't too smart.

 

[Cerb]

Yes the card does have a dvi port, but the 19 inch monitor only has a vga connection so I went out and bought a female vga to male dvi adapter.

You could try playing with a custom resolution setting in the Forcewares, but I have no experience doing that with analog outs, where timing settings and all matter.

Also, look in the monitor's OSD for any clock rate or skew options (I've even seen them called "lock", as if to confuse regular people 🙂), and play with them.

If neither work, another video card is probably the only option.