Dual monitor flicker
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Bad Karma -> System Help
#1: Dual monitor flicker Author: UFANS,  PostPosted: Fri Nov 25, 2011 4:56 pm
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I have recently added another monitor, have tried with all different sized monitors for 17" to the current 23" monitor, and no matter what I do I get a screen flicker on one of the monitors.  I am running 2 5850 crossfired.  Has anyone experienced this and if so how did you correct it?  I have tried uninstalling the drivers and reinstalling, set both card back to default, and enabled/disabled overdrive in CCC.
#2: Re: Dual monitor flicker Author: tet, Location: Washington PostPosted: Fri Nov 25, 2011 5:09 pm
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I still only use a single monitor, but it is 28 inches.  However I am still getting green flashes here and there.  That is annoying.
#3: Re: Dual monitor flicker Author: TakerDeep2008,  PostPosted: Fri Nov 25, 2011 6:05 pm
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I  would say you have a defective cable for that second monitor
switch with other monitor and see if problem shifts
#4: Re: Dual monitor flicker Author: UFANS,  PostPosted: Fri Nov 25, 2011 7:27 pm
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Tried that, got two new cables from work (DVI).  I even flipped the cards to see if that fixed it but it made no difference.  It usually starts on my main screen, I can change the second screens resolution and it will leave the main screen and goes to second screen.  I have both screens set at the same refresh rate and resolution.  There are a lot of post of people having problems and most are able to disable the overdrive or OC just a tad and it fixes the problem, I have tried both and nothing.
#5: Re: Dual monitor flicker Author: UchiMata, Location: Northampton, UK PostPosted: Fri Nov 25, 2011 8:45 pm
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Is your power supply large enough? Perhaps the draw on the graphic cards is draining the signal from the cables when your system warms up?
#6: Re: Dual monitor flicker Author: Abram, Location: Fort McMurray, AB PostPosted: Fri Nov 25, 2011 9:16 pm
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Do you always get flicker, or does it only occur when you do a specific action?? What kind of flicker is it? Brightness? Colors? Power?

I assume each monitor behaves properly when plugged (or active) in on its' own?
#7: Re: Dual monitor flicker Author: UFANS,  PostPosted: Fri Nov 25, 2011 10:26 pm
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Im running the Cooler Master Silent Pro M1000 1000watt PSU.  It only happens with a dual setup.  You really notice it when your on the web, best way to describe it is it looks like its trying to mirror the image of the other monitor but half way down the screen.
#8: Re: Dual monitor flicker Author: UchiMata, Location: Northampton, UK PostPosted: Fri Nov 25, 2011 11:25 pm
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Sounds like your cards aren't behaving properly with the monitors. Are the monitors identical or have slight differences, eg are the native resolutions and refresh rates the same? I fortunately have three monitors that are exactly the same make/models.
Might be worth a complete clean uninstall and reinstall of your drivers - though I'm sure you may have done this already.
#9: Re: Dual monitor flicker Author: Abram, Location: Fort McMurray, AB PostPosted: Sat Nov 26, 2011 12:36 am
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Definitely you cards  (or one card) causing the problem. Does it stop when crossfire is disabled? Does it happen with jsut oen card installed? Try both on their own. A clean, complete uninstall/reboot/reinstall of the drivers is a good (and easy) place to start.

Does it happen on span or cloned modes?
#10: Re: Dual monitor flicker Author: cypher369, Location: Niagara Falls, Canada PostPosted: Sat Nov 26, 2011 4:57 am
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is your response time for both monitors the same?
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