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Weird Dual-monitor Problem

 
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Old 01-30-2018, 05:26 PM   #1
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Weird Dual-monitor Problem


For the past 4 or 5 years, I've used two monitors on my computer as it's nice to have that much real estate to spread things out on. But a week ago, my second monitor started doing some weird things.

First, it took on a reddish tint. I tried to correct it, but to no avail. Now.... it's green.

A screen shot isn't affected by this green tint, but here's the weird part: I use a utility program called Instant Eyedropper. It allows me to select a small area on either monitor and pick up the HTML, RGB or HSB colors for either a small group of pixels, or an individual pixel if I desire. But this app will only return 255:255:255 no matter where on the screen it's placed and what color is really under it, even if I KNOW it's 0,0,0.

My first thought was I had a monitor going south. But since the Instant Eyedropper won't function properly on that monitor, it makes me think it's a driver or even possibly a video card issue.

Anyone got any ideas?
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Old 01-30-2018, 05:50 PM   #2
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Re: Weird Dual-monitor Problem


Plug in another monitor, which will probably confirm you're due for a new one. Or swap jacks on the two you have and see what happens.

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Old 01-30-2018, 06:13 PM   #3
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Re: Weird Dual-monitor Problem


Swapping doesn't change anything. It's still green.

But what I don't get is why the eyedropper app doesn't work on that monitor. It should get it's data directly from the video card, not the screen.
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Old 01-30-2018, 07:58 PM   #4
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Re: Weird Dual-monitor Problem


You can run benchmarking software and compare it to other users. You can use Heaven (free s/w) for benchmarking and diagnosis.

You can swap the cables and/or the video card and that should give you some more information.

I feel a new video card is in your future. Overheating is not unheard of, even if you're not playing demanding computer games on it.

Last edited by r a s; 01-30-2018 at 08:00 PM.
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Old 01-30-2018, 08:03 PM   #5
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Re: Weird Dual-monitor Problem


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Originally Posted by r a s View Post
You can run benchmarking software and compare it to other users. You can use Heaven (free s/w) for benchmarking and diagnosis.

You can swap the cables and/or the video card and that should give you some more information.

I feel a new video card is in your future. Overheating is not unheard of, even if you're not playing demanding computer games on it.

If it's the video card, then wouldn't the other monitor have turned green?
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Old 01-30-2018, 08:07 PM   #6
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Re: Weird Dual-monitor Problem


Switch the two cables that plug into each monitor. The monitor that was green should now look fine and the other one will have the greenish tone.

If that's the case, then it is either your cable (doubtful unless it is physically damaged - core or pins) or the video card.

[I reserve the right to be completely wrong in my thinking.]
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Old 01-30-2018, 08:12 PM   #7
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Re: Weird Dual-monitor Problem


That's what I did.... swapped the cable ends to the monitors. The one that was green is still green.
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Old 01-30-2018, 08:14 PM   #8
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Re: Weird Dual-monitor Problem


That is some crazy voodoo you've got going on. Sharper minds will have to chip in...
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Old 01-30-2018, 08:24 PM   #9
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Re: Weird Dual-monitor Problem


If you swapped the cables and the green monitor is still green, then it's a monitor problem, unless there is a specific driver for that monitor. Put it's probably generic pnp driver, no?

You could try and disconnect both monitors and remove the video card. Then plug the monitor into the video out on the mother board. That would tell you if the monitor is the problem (which it sounds like it is). I assume you mobo has video out.
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Old 01-30-2018, 09:01 PM   #10
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Re: Weird Dual-monitor Problem


Let me try it on my laptop..... stand by.
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Old 01-30-2018, 09:15 PM   #11
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Re: Weird Dual-monitor Problem


Must be the video card.... it displays correctly on the laptop (despite the maximum resolution of my $150 laptop being 1300 x something).
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Old 01-30-2018, 09:27 PM   #12
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Re: Weird Dual-monitor Problem


Thanks, everyone!

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