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"Flickering problem"

Last response: in Graphics & Displays
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October 6, 2012 10:21:33 AM

Hello all,

I have some trouble with a "flickering" screen ie like green pixels lines appearing at different place varying with the background.

Parameters:
Config is 2 days old.
This happens when i'm at 120Hz 1920x1080 but not if i move down to 110Hz.
I had to flick the switch on the Card to get 120Hz.

Here is my config:
Intel Core i5-3570K (3.4 GHz)
ASRock Z77 Extreme4
Be Quiet ! Dark Rock Pro
Corsair Vengeance Low Profile 8 Go (2x 4 Go) DDR3 1600 MHz CL9 Crucial M4 128 Go
Seagate Barracuda 7200.14 SATA 6Gb/s 2 To
Samsung SH-222BB/BEBE
Corsair Carbide 500R
Seasonic X-660 80PLUS Gold
Iiyama 27" LED - ProLite G2773HS
Logitech Cordless Desktop MX 5500 Revolution
ASUS Radeon HD7970-DC2-3GD5

Regarding Software:
Catalyst 12.8
2D Pilot 8.01.01.1253
Direct 3D 9.14.10.0924
Open GL 6.14.10.11762

Thanks for your help

More about : flickering problem

October 6, 2012 11:11:39 AM

I would check the bios version and look for an update on that. As it is probably how the PCI is been handled nce you flick over to 120HZ. Also check for updates on all over installed drivers as well as looking at downloading specific driver on your moniter incase your using a generic.
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October 6, 2012 11:40:12 AM

Bios version is the latest.
Is in PCIE config.
Card & Screen driver installed today...
No change
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October 6, 2012 12:15:27 PM

Try an other DVI cable if possible. Does it happen on both DVI ports? Problem might be that this is on the edge of what is supported by DVI.
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October 6, 2012 4:39:07 PM

I'll try to get one.
No it happens only on one port on the ASUS HD7970-DC2-3GD5 only one port can deliver 120Hz. The other is limited to 60Hz.
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