Duel monitor flickering - AMD?

[iopsis]

Hey guys,

I'm having some problems with my two new Dell U2515H - I presume its an AMD issue with my R290.

When I use them as dual monitors, after a while, they both start synchronized flickering, and I'm completely clueless how to stop it. However if I'm only using one of them, it's completely fine.

The cables are in firmly, and if I revert to a single monitor setup during the flickering, it stops. Also if I restart my PC, it stops. I've tried adjusting the video card memory clock speed above 1250 MHz, but then both monitors turn off, and even if I restart my PC, then monitors turn off a few seconds after booting back to desktop.

I'm using an AMD R290, connected via MiniDP (primary) and HDMI (secondary) at 1440p 60Hz.

I took a video for you to look at, if you could help me out pleaseee: https://youtu.be/j86X2aPpY6U

EDIT: Also after a while, when experiencing these visual artifacts, they eventually disappear.

Thanks!

 

[Meladath]

hm.... Well, flickering on monitors I have noticed is usually not enough voltage to the core, or too high memory overclock. Is your card running entirely stock? if so... might be RMA time, but if not, put more volts through it.

 

[iopsis]

It's running stock. How would I manually put more volts in catalyst - just increase my power limit settings?

 

[Meladath]

It's running stock. How would I manually put more volts in catalyst - just increase my power limit settings?

As far as I know catalyst cannot adjust voltage, power limit is the amount of current that can be pulled from the PSU, thats not the same as core voltage.

Download MSI Afterburner and use that to set your overclocks and put a bit more voltage through it. Usually those flickers are caused by close settings, since any really large changes cause crashes etc, so +6 or +12mv should do it.

 

[iopsis]

As far as I know catalyst cannot adjust voltage, power limit is the amount of current that can be pulled from the PSU, thats not the same as core voltage.

Download MSI Afterburner and use that to set your overclocks and put a bit more voltage through it. Usually those flickers are caused by close settings, since any really large changes cause crashes etc, so +6 or +12mv should do it.

Downloaded and discovered that my core had been overclocked slightly, but with no added voltage - must have been an earlier AMD catalyst version that allowed it to auto overclock, because the features aren't on catalyst now... I presume the feature was fine overclocking for a single monitor, but that old overclock speeds just weren't compatible with two monitors.

Anyway, I've reverted it back to stock, added 6mV and fingers crossed, it works.

Thanks a lot for the help!