Acer S221HQL colour differs dramatically between VGA&DVI inputs.

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14 Jan 2010
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I have 3 of these monitors (3x1920x1080 horizontally), and have noticed that each of them varies wildly on it's calibration when using the VGA port.

As I'm using a 5870 to drive them, one of them has to be driven with VGA (Passive DP->VGA adapter; I'm too cheap to buy an active DP->DVI adapter!)
However as each of the monitors gives such different results when using VGA, I don't think it's the adapter causing the problem.

I currently have them arranged so the one with the least variance is on the VGA input, but was hoping that someone knew of a way to recalibrate the VGA input? (it isn't just a simple case of using the monitor's OSD; the colour variance is way beyond what that can account for)
 
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