OK crap. I think something went very wrong. I'm now getting really poor performance in games. How's this possible? I reset to defailt factory settings, didnt work. Then I un-installed the old drivers, and re-installed new ones. Still no fix. Now im wondering just what the hell I got myself into...
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Displayport Flicker - Page 2
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post #12 of 18
7/18/12 at 11:43pm
I get the feeling we are mixing up several different problems.
The linked thread started out talking about the memory clock problem, hence the 2D idle clocks vs. 3D clocks. Then someone mentioned tearing, which is a separate problem that can happen when mixing DVI and DP, and that's when Ken started talking about how the clocks for DVI and DP are different. That has nothing to do with the flickering.
If this is not the memory clock problem, I can only think of three possibilities:
1. The DisplayPort cable isn't good enough to handle the full bandwidth required to run the U3011 at the native resolution.
2. The DisplayPort on the video card can't actually handle the full bandwidth even though it should.
3. The DisplayPort on the monitor is not working properly.
In any case, moving the U3011 to a dual-link DVI port and connecting one of the 2007FP monitors with an active DP -> DVI adapter might work around the problem.
The linked thread started out talking about the memory clock problem, hence the 2D idle clocks vs. 3D clocks. Then someone mentioned tearing, which is a separate problem that can happen when mixing DVI and DP, and that's when Ken started talking about how the clocks for DVI and DP are different. That has nothing to do with the flickering.
If this is not the memory clock problem, I can only think of three possibilities:
1. The DisplayPort cable isn't good enough to handle the full bandwidth required to run the U3011 at the native resolution.
2. The DisplayPort on the video card can't actually handle the full bandwidth even though it should.
3. The DisplayPort on the monitor is not working properly.
In any case, moving the U3011 to a dual-link DVI port and connecting one of the 2007FP monitors with an active DP -> DVI adapter might work around the problem.
Quote:
If active DP -> DVI adapters helped in your case, then mixing DVI and DP is not the problem unless you connected all three monitors with adapters because the video card would still be outputting a DisplayPort signal with an active adapter.Originally Posted by tompsonn 
My issue wasn't due to memory clocks at all
Although I am aware of the flicker you get when the clocks change *cough* loading flash videos on my 5750 *cough*
My issue wasn't due to memory clocks at all
Although I am aware of the flicker you get when the clocks change *cough* loading flash videos on my 5750 *cough*
post #13 of 18
7/18/12 at 11:50pm
- tompsonn
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Quote:
Originally Posted by ToastyX
...
If active DP -> DVI adapters helped in your case, then mixing DVI and DP is not the problem unless you connected all three monitors with adapters because the video card would still be outputting a DisplayPort signal with an active adapter.
...
If active DP -> DVI adapters helped in your case, then mixing DVI and DP is not the problem unless you connected all three monitors with adapters because the video card would still be outputting a DisplayPort signal with an active adapter.
Nah I didn't do that. TBH I'm not sure what the actual issue is or was. Point is the adapters fixed the problem and that's all I care about haha!!
You're definitely right about mixing up problems here. Mine was definitely not tearing. It was flicker 100%.
Edited by tompsonn - 7/18/12 at 11:53pm
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| CPU | Motherboard | Graphics | RAM |
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| Hard Drive | Hard Drive | Hard Drive | Hard Drive |
| Plextor PX-256M5S 256GB | Crucial M4 128GB | Hitachi HDS721010CLA332 | Hitachi HDS723020BLA642 |
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post #14 of 18
7/18/12 at 11:59pm
- Kokin
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I've been using DP for my main screen and DVI for my 2nd screen and have not experienced any problems with my previous 5870s. It worked fine if set in CF mode or if in single card mode. I only did experience the flickering if both GPUs ran at 157core/300mem, but that was easily fixed.
What CPU are you running? If you're using a Sandy or Ivy, it's possible that the games are using the integrated graphics instead of the discrete graphics card.
What CPU are you running? If you're using a Sandy or Ivy, it's possible that the games are using the integrated graphics instead of the discrete graphics card.
Kurisu
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Kurisu
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| Hard Drive | Hard Drive | Cooling | Cooling |
| Crucial M4 256GB | Western Digital Blue Scorpio 1TB | D5 + XSPC D5 Tank Res | XSPC EX240 + EX120 [Painted White] |
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My CPU is an i5-2500k. I don't think games are using my CPU instead of my GPU. One thing I noticed that bothered me was that where I had lack luster in some games, one game performed exactly how it should (skyrim). I'm so confused as to what's going on. How can I make sure that I revert to the old defaults after tinkering with the presets?
post #16 of 18
7/20/12 at 1:30pm
- LocutusH
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Displayport flickering is a known DELL issue.
There are numerous reports on the U2410 line also, and i am experiencig in myself too. Not so often, but every other month or so, in 24/7 mode. Sometimes when it has a bad day, the flickering wont stop, and i have to let it go to energy saving mode, and then back again, to solve it. Sometimes even an incoming call on my near cell phone causes it to go black, and back again...
There are numerous reports on the U2410 line also, and i am experiencig in myself too. Not so often, but every other month or so, in 24/7 mode. Sometimes when it has a bad day, the flickering wont stop, and i have to let it go to energy saving mode, and then back again, to solve it. Sometimes even an incoming call on my near cell phone causes it to go black, and back again...
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post #18 of 18
7/22/12 at 5:02pm
- tompsonn
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Quote:
Originally Posted by mobiusdick
rats... I've resolved myself to just install a cheap small secondary GPU to run the third monitor so that all monitors are on DVI.
rats... I've resolved myself to just install a cheap small secondary GPU to run the third monitor so that all monitors are on DVI.
This is definitely a problem with the DisplayPort on Dell monitors. I plugged all of my monitors into a 7970 via DP, same flickering. So nothing to do with different clock signals or clocks being out of sync as previously mentioned in the end.
|
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| CPU | Motherboard | Graphics | RAM |
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| Hard Drive | Hard Drive | Hard Drive | Hard Drive |
| Plextor PX-256M5S 256GB | Crucial M4 128GB | Hitachi HDS721010CLA332 | Hitachi HDS723020BLA642 |
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| Hitachi HDS723020BLA642 | Hitachi HUA722010CLA330 | WDC WD10EARS-00Z5B1 | TSSTcorp CDDVDW SH-S223B |
| Cooling | Cooling | OS | Monitor |
| Phanteks PH-TC14PE with TY-140's | Lamptron FCv5 (x2) | Windows 7 Ultimate 64-bit | Dell U2412M |
| Monitor | Monitor | Monitor | Keyboard |
| Dell U2412M | Dell U2212HM | Dell U2212HM | Ducky DK9087 G2 Pro |
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| Corsair AX-750 | Corsair Obsidian 650D | Microsoft IntelliMouse Optical | XTRAC Ripper XXL |
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|
My System
(30 items) |
"Zeus"
(13 items) |
| CPU | Motherboard | Graphics | RAM |
|---|---|---|---|
| Intel Core i5 2500K (4.5ghz @ 1.320v) | Gigabyte Z68X-UD3R-B3 | MSI R7970 Lightning | Corsair 16GB (4x4GB) |
| Hard Drive | Hard Drive | Hard Drive | Hard Drive |
| Plextor PX-256M5S 256GB | Crucial M4 128GB | Hitachi HDS721010CLA332 | Hitachi HDS723020BLA642 |
| Hard Drive | Hard Drive | Hard Drive | Optical Drive |
| Hitachi HDS723020BLA642 | Hitachi HUA722010CLA330 | WDC WD10EARS-00Z5B1 | TSSTcorp CDDVDW SH-S223B |
| Cooling | Cooling | OS | Monitor |
| Phanteks PH-TC14PE with TY-140's | Lamptron FCv5 (x2) | Windows 7 Ultimate 64-bit | Dell U2412M |
| Monitor | Monitor | Monitor | Keyboard |
| Dell U2412M | Dell U2212HM | Dell U2212HM | Ducky DK9087 G2 Pro |
| Power | Case | Mouse | Mouse Pad |
| Corsair AX-750 | Corsair Obsidian 650D | Microsoft IntelliMouse Optical | XTRAC Ripper XXL |
| Audio | Audio | Audio | Audio |
| Westone W3 IEMs | RE-272 IEMs | Shure SE-215 IEMs | Schiit Bifrost DAC |
| Audio | Audio | ||
| Schiit Asgard 2 amp | HiVi Swan M50W 2.1 | ||
| View all | |||
| CPU | Motherboard | Graphics | RAM |
|---|---|---|---|
| Intel Core i7 950 | GA-X58-UD3R | Radeon HD 5450 | 24GB Corsair @ 1333mhz |
| Hard Drive | OS | Power | Case |
| 4x WD Cavair Red 1TB in RAID 0 | Windows Server 2008 R2 x64 | Corsair HX-520 | LianLi LanCool |
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