Flicker unless 2 monitors used

[emkayiii]

Hi,

I've got a strange issue, unless I plug in both monitors, I get frequent horizontal flicker artifacts, whenever there is movement on the screen (when I drag a window for example). With both monitors plugged in, and set to "extend desktop" the issue doesn't appear.

This is my office PC, no gaming, just regular work stuff.

My setup:

Windows 7, 64-bit
AMD Radeon HD 6570
Latest drivers: Catalyst CC 2011.1109.2212.39826, 2D driver version 8.01.01.1215

The main monitor (which flickers when used alone) is connected via DVI, the other (extended) one via a DVI-VGA converter.

I've checked that the card is seated properly.

Any ideas??

Thanks,

Matt

 

[abekl]

Sounds like your video card might be going bad. Try talking with tech support for the card vendor, they might rma it for you.

 

[emkayiii]

I was worried you might say that. Now I'll get to wait 3 weeks. At least I got on-board gfx to fall back on...

Thanks for the advice!

Matt

 

[Kari]

try these: 12.1a preview
http://support.amd.com/us/kbarticles/Pages/Catalyst121apreviewdriver.aspx

the flickering was caused with older drivers when the card changed between idle/media/3d clocks... it was fixed way back already, maybe it went bad again somehow..


edit and using 2 monitors sets the clocks slightly higher, thus resolving the problem

 

[leighw]

I have this same issue on my Dell U2711 monitor and AMD Radeon HD 6570 video card. I tried 12.1a preview however sadly it has not fixed the issue.