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Brand new Gigabyte Radeon HD5850 1gb Dual Monitor Flicker/Gray Horizontal Lines

post #1 of 31
Thread Starter 
Hello,
This is my first time posting. I just bought an Gigabyte ATI Radeon HD 5850 1GB graphics card and installed it yesterday and I plugged in my second monitor and it seems that whenever their is activity going on on the primary monitor the secondary monitor likes to flicker and make gray horizontal lines across the whole things. When i am in a 3d program i get the gray lines going down the whole screen and I have tried setting up stock clocks for 2d and 3d programs in MSI Afterburner. That didn't do anything for me. I tried plugging one monitor into an HDMI port and the other into a DVI port. That somewhat worked. It reduced the frequency of the gray lines. But other then that I haven't found anything that works. I also tried messing with ATI Overdrive and that did nothing. My monitors are and Asus vh236 and a Samsung SyncMaster 712n. The Asus is a DVI monitor and the Samsung is a VGA monitor. I would really appreciate any help i can get because i really don't want to RMA this thing. Thanks in advance for all your help.
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post #2 of 31
Driver sweeper, otherwise it's the grey screen of death.
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post #3 of 31
Thread Starter 
Well when I deleted ALL the old nvidia drivers and I also deleted the current ATI drivers and reinstalled them. When the card was in "safe mode" the card wasn't doing the whole gray lines thing. Is their anything else i can try?
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post #4 of 31
Quote:
Originally Posted by nick19268 View Post
Well when I deleted ALL the old nvidia drivers and I also deleted the current ATI drivers and reinstalled them. When the card was in "safe mode" the card wasn't doing the whole gray lines thing. Is their anything else i can try?
D'oh! I just started a thread with exactly the same thing on exactly the same card.

You maybe interested in the partial workaround I discovered. If you set the color mode of your second monitor to 16 bit color, the flicker happens much less often. Well, it did for me. I don't want this workaround though, I want my second monitor in 32 bit color, so I'm hoping someone here can help.

There are dozens of threads and (at least) hundreds of people with this exact problem. Suggestions are usually focused around disabling ATI Overdrive in CCC (didn't work for me) or simply installing and enabling MSI Afterburner (also didn't) or creating a power profile in CCC (which doesn't even seem to be possible anymore).

If you're only using your second monitor for windows stuff, 16 bit color might be a suitable workaround for you (if it works). I watch video on the second monitor though and it looks all low-res jpeg'y.
Edited by d4005 - 4/9/11 at 1:23pm
    
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post #5 of 31
Thread Starter 
Believe it or not I think I may have found a fix for it. D4005 yours and my card might have a defective bios and I found a good BIOS that bumps the default 2d clocks upto 400 mhz instead of 175 mhz here is the link http://www.techpowerup.com/vgabios/7...24.100609.html If your not familiar with flashing BIOS onto Graphics cards here is a tutorial. http://www.overclock.net/ati/671675-...5850-bios.html Although I haven't tried flashing it I would just give it a try. I am actually in the process of RMA'ing my card with newegg.com and if that doesn't fix the problem then I will be trying the new BIOS as an alternative fix.

I have read in some threads that the problem why the second monitor flickers is that the core clocks are so low that it can only output enough for one monitor plus a little extra thus having the gray lines. So maybe the BIOS will work maybe it won't you will never know until you try. So if you do go ahead and try it please feel free to let me know if it works or not. That would be much appreciated.

P.S. My card has the latest version on Gigabyte's website but I'm not sure where this BIOS came from, but it looks like it could work.
Edited by nick19268 - 4/10/11 at 12:40am
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post #6 of 31
Quote:
Originally Posted by nick19268 View Post
Believe it or not I think I may have found a fix for it. D4005 yours and my card might have a defective bios and I found a good BIOS that bumps the default 2d clocks upto 400 mhz instead of 175 mhz here is the link http://www.techpowerup.com/vgabios/7...24.100609.html If your not familiar with flashing BIOS onto Graphics cards here is a tutorial. http://www.overclock.net/ati/671675-...5850-bios.html Although I haven't tried flashing it I would just give it a try. I am actually in the process of RMA'ing my card with newegg.com and if that doesn't fix the problem then I will be trying the new BIOS as an alternative fix.

I have read in some threads that the problem why the second monitor flickers is that the core clocks are so low that it can only output enough for one monitor plus a little extra thus having the gray lines. So maybe the BIOS will work maybe it won't you will never know until you try. So if you do go ahead and try it please feel free to let me know if it works or not. That would be much appreciated.

P.S. My card has the latest version on Gigabyte's website but I'm not sure where this BIOS came from, but it looks like it could work.
Thanks. I'll give that a go when the Formula 1 is finished. Although this AMD GPU tool did stop the flicker (by raising the clocks to 400/900 just like the BIOS would), I notice the change doesn't stick. You have to start the app each time you start the computer.

I'm awaiting an answer to this question before I go ahead and risk bricking my card. I don't know if I have what they're referring to as a "reference card".
Edited by d4005 - 4/10/11 at 3:50am
    
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post #7 of 31
Quote:
Originally Posted by d4005 View Post
Thanks. I'll give that a go when the Formula 1 is finished. Although this AMD GPU tool did stop the flicker (by raising the clocks to 400/900 just like the BIOS would), I notice the change doesn't stick. You have to start the app each time you start the computer.

I'm awaiting an answer to this question before I go ahead and risk bricking my card. I don't know if I have what they're referring to as a "reference card".
Well, the answer came back negative. Mine isn't a reference card so I can't try that BIOS update.

Manual clock changes with AMD GPU tool for me then, because I can't figure out how to make it stick with CCC or MSI Afterburner (and I'm scared to just "play around" with values - it's too dangerous).
    
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post #8 of 31
Thread Starter 
So what your saying is that this card here: http://www.newegg.com/Product/Produc...=GV-R585OC-1GD will not work with the bios i linked even though it says in clock state 1,3, and 4 it says 765?
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post #9 of 31
Quote:
Originally Posted by nick19268 View Post
So what your saying is that this card here: http://www.newegg.com/Product/Produc...=GV-R585OC-1GD will not work with the bios i linked even though it says in clock state 1,3, and 4 it says 765?
That's what user fashric told me in this thread and he sounds like he knows what he's talking about.

That BIOS is for reference models and the Gigabyte one apparently isn't a reference model. I see you joined in on the other thread (email notification just arrived as I'm typing this).
    
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post #10 of 31
Thread Starter 
which is wierd because we have the same brand cards as the bios. I wonder what would happen if it was flashed onto one of our cards.
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