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ATI 5850 Dual Monitor Flicker Fixed!!!! - Page 4

post #31 of 37
Well, I'm at work, and looking at the BIOS files.

This is currently on my 1st GPU: (This one I had already flashed to fix the GSOD I was getting at the time. It fixed it too.)
CurrentlyonmyFIRSTGPU.png

And then this is my second card that I've had for about a month, and haven't flashed a thing:
CurrentlyonmySECONDGPU.png

Funny thing is that the second card, which actually has an older BIOS has all the memory clocks at 1200. Perhaps that is where the issue lies with me. Maybe because these are non-reference cards, they need certain settings in the BIOS.

For comparison, here is the official F8 revision of the BIOS for these cards:
OfficialGigabyteBIOS.png

I'm thinking I'll probably flash that official one first, leaving the memory clocks as they are, and see if that fixes the issue. If not, then edit that official BIOS to put all the memory clocks at 1200.

Does anyone see anything else interesting in the different BIOS's? If you need me to take different screenshots I can, so let me know.
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post #32 of 37
Thread Starter 
What im wondering is on the offical f8 version the voltage for state 0 looks like this ---
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post #33 of 37
Quote:
Originally Posted by nick19268;13273436 
What im wondering is on the offical f8 version the voltage for state 0 looks like this ---

I know right? Things just seem a bit odd to it, so I figure as long as I have all of the different BIOS's that I want to try on the flash drive, if one doesn't work, one of the others may. Also, maybe someone else with knowledge in this area will post.
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post #34 of 37
Interesting. Sorry the fix didn't work out for you. I think it may only work for reference cards then. It was the only thing that worked for my reference card.

I remember an old thread on a forum somewhere mentioning the ability to disable powerplay features via the registry, but I forget where the key is located.

EDIT: found it.....it's located under:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E968-E325-11CE-BFC1-08002BE10318}\0000

Set the value of "EnableUlps" to 0

I remember reading that this is a crossfire only fix though, and again only known to work on reference cards. I wonder how much different the non-reference BIOSes are from the reference that causes some fixes to work, while others not to.
Edited by PsikyoJebus - 4/26/11 at 3:57am
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post #35 of 37
EDIT: I wound up just flashing the official one first, and lo and behold IT'S FIXED! I'm watching a movie on my HDTV and posting here in my monitor below. Not a flicker in either screen. biggrin.gif Seems GIGABYTE is on the job!
Quote:
Originally Posted by nick19268;13273436 
What im wondering is on the offical f8 version the voltage for state 0 looks like this ---

It turns out after some reading, that if that shows up in RBE, it means the default voltage the card allows.
Quote:
Originally Posted by PsikyoJebus;13276294 
Interesting. Sorry the fix didn't work out for you. I think it may only work for reference cards then. It was the only thing that worked for my reference card.

I remember an old thread on a forum somewhere mentioning the ability to disable powerplay features via the registry, but I forget where the key is located.

EDIT: found it.....it's located under:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E968-E325-11CE-BFC1-08002BE10318}\0000

Set the value of "EnableUlps" to 0

I remember reading that this is a crossfire only fix though, and again only known to work on reference cards. I wonder how much different the non-reference BIOSes are from the reference that causes some fixes to work, while others not to.

Tried that, still have the issue. I have modified the official BIOS that GIGABYTE put out, but wanted to make sure that no one saw anything wrong with what I did.

I changed the memory clocks all to 1200, and the Clock info 01 from 157 to 400. I did this because according to the 'clock info modes used' it was the 'low' setting. Should I change Clock info 06 to 400 as well? Clock info 06 is the ONLY state for PowerPlay state 4, which is 'ACPI: Disabled load balancing'. Or am I probably OK as long as I modify the clocks in the three major states.
mychanges1.png

Then I also changed the fan settings by basically changing the 'Duty Cycle % minimum' to be 100 across all temps.
mychanges2.png

I have tried editing config files for MSI afterburner; tried making custom profile in CCC, tested all my settings in the displays, and I think my only option besides flashing is trying out different CCC drivers, which is what I'm going to be doing while I wait for the awesome replies of the wonderful, knowledgeable, and helpful members that dwell amongst these forums.
Edited by Demented - 4/26/11 at 9:04am
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post #36 of 37
Hey guys

Basically, I need to flash my Radeon 5850's BIOS in order to prevent flickering on my second monitor. I followed the guide above exactly but I have a few issues.

Here is a picture of my current Radeon 5850's BIOS settings:



The OP changed all of his GPU's memory clock values to 1000 (00, 01, 02, 03 and 04). With mine, I have 00, 01, 02, 03, 04, 05 and 06. Taking a gamble, I put 1000 for the memory clock on all of them, and this worked successfully. However, I am unsure if this is safe and if I am doing this correctly.

This leaves me with a problem and a question.

The ATI Radeon 5850 can be overclocked in the CCC override settings to have a memory clock of 1125. Foolishly, I changed the memory clocks of 00-06 on the bios to 1125. After I flashed the GPU and did a reboot, I could no longer get past post. I have now flashed back the default BIOS back to the GPU but I still have the problem with the flickering screen.

Basically, I want to flash my GPU with settings that prevent the flickering occurring on the 2nd monitor but also have the safe 1125mhz memory over clock.

What settings will I have to put in to achieve this?

I would be very appreciative for a response.

Thank you

J
post #37 of 37
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