Tom's Hardware > Forum > Graphic & Displays > Graphics Cards > Supreme Commander Dual Screen Flicker
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jay_l_a   09-24-2009 at 08:07:57 PM

I apologize for the cross post. I had originally posted this in the games section, but I think it makes more sense in the GPU section.

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Just for the fun of it I thought I’d try out the dual monitor option in Supreme Commander. The main screen works fine, but the second screen flickers badly. It almost looks like the refresh rate is wrong..

The second screen works fine in windows (XP32)

Note, I’m running crossfire, with both monitors connected to the same card.

Thanks,
J

------------------------------ GA-X38-DS4 (BIOS F3)||E8400 C2D (3.6GHz)||2x 1Gb Crucial Ballistix DDR2-800 4-4-4-12||320Gb WD Caviar||2x 750Gb WD Caviar||Cooler Master Real Power Pro 750W||2x HD4870 512Mb(Crossfire)||HT Omega Striker 7.1
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jay_l_a   09-24-2009 at 08:29:31 PM

pluke the 2 wrote :

2x HD4870 512Mb(Crossfire) ? What resolutions



Main screen is 1920x1200 and second screen is 1600x1200, both at 60Hz

------------------------------ GA-X38-DS4 (BIOS F3)||E8400 C2D (3.6GHz)||2x 1Gb Crucial Ballistix DDR2-800 4-4-4-12||320Gb WD Caviar||2x 750Gb WD Caviar||Cooler Master Real Power Pro 750W||2x HD4870 512Mb(Crossfire)||HT Omega Striker 7.1
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strangestranger   09-24-2009 at 08:42:04 PM

I have not tried 2 screens but using the dual view in one screen takes a hit, perhaps that is a reason.

What happen if you run both screen at the same resolution, say 12 x 10?

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jay_l_a   09-24-2009 at 11:10:44 PM

strangestranger wrote :

I have not tried 2 screens but using the dual view in one screen takes a hit, perhaps that is a reason.

What happen if you run both screen at the same resolution, say 12 x 10?



Yep, I'm expecting it to take a bit of hit, but as a RTS it shouldn't be to noticeable.

It's not slowdown though. Ever send a 70Hz signal to a 60 or 65Hz display? The second screen looks a little like that, really bad screen tearing.

I'll try them both at the same res. using 16x12 on both screens, see if that makes any difference.

------------------------------ GA-X38-DS4 (BIOS F3)||E8400 C2D (3.6GHz)||2x 1Gb Crucial Ballistix DDR2-800 4-4-4-12||320Gb WD Caviar||2x 750Gb WD Caviar||Cooler Master Real Power Pro 750W||2x HD4870 512Mb(Crossfire)||HT Omega Striker 7.1
 Reply to jay_l_a
paperfox   09-25-2009 at 12:40:44 AM

ive had a similar problem with screen flickering on my dual 22" 1680x1050 conected to a hd4870. the second screen would flicker whenever i scrolled with the mouse wheel on word or a web browser. reinstalling the graphics drivers seemed to have fixed my problem. hope this helps out! :)

Reply to paperfox
jay_l_a   09-29-2009 at 07:53:38 PM

After reinstalling, and navigating through the obnoxious SupComm patch process, and checking different resolutions as I go, I've discovered the following:
1. The second screen flickers regardless of the resolution combination I use on either screen.
2. The second screen flickers regardless of the version number I try

Anyone any ideas?

------------------------------ GA-X38-DS4 (BIOS F3)||E8400 C2D (3.6GHz)||2x 1Gb Crucial Ballistix DDR2-800 4-4-4-12||320Gb WD Caviar||2x 750Gb WD Caviar||Cooler Master Real Power Pro 750W||2x HD4870 512Mb(Crossfire)||HT Omega Striker 7.1
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