So I tossed my old 1680x1050 monitor and replaced it with a new Asus PB278Q. I have an ATI (OK..AMD) 5970.
I've been using the DVI (duel link) cable that came with the monitor to plug it into my 5970. using windows 7-64bit.
1920x1080 resolution works fine. But when I try to increase it past that, to its native resolution of 2560x1440, the screen gets corrupted by lots of red dots and lines. Its very strange. Otherwise, it is alright.
I tried to take a screen shot to post here, but of course when I went back to 1920x1080 to look at the screen shot, the red dots were not visible.
I tried both DVI ports on the 5970 just in case.
I also tried to use the displayport. But I couldn't get that working at all. I couldn't get any signal. I tried it with just the displayport cable and a reboot. Also tried booting it up in DVI and switching over to the displayport. No go. Nothing is detected. This should be just plug and play yes? There isn't some hidden toggle I am missing to get the Displayport to work right?
I tried reinstalling the latest AMD drivers. No help. I turned off my over minor overclock. So it is running at default. Also boosted the fan a bit to fix at 40% to keep the GPU at around 52 degrees.
I also tried messing around with the properties section of the Catalyst Control center. the DVI settings. Turning off and on Reduce DVI frequencey and Alternate DVI operational mode... since they both talked about fixing display corruption at High Resolutions.. but no dice.
Note.. when I go into Device Manager, the Monitor shows up as a Generic PnP Monitor. But if I go to Devices and Printers from the start menu, it shows up correctly as an Asus PB278. Not sure what that means? Why is it Generic in one, and not the other.
I dont know. I am at my wits end. I don't see anyone else talking about this. So Either:
1) I am a compete moron. (A distinct possiblity). The answer is so blindingly obvious that no one else is having a problem with it. I'm sure ill be calling tech support about using my DVD tray as a cup-holder any day now.
2)There is something wrong with my 5970? Either the settings somewhere in the control centre, maybe a problem with the card itself.
3) My new monitor is defective. Or the cables (Both of them!?).
I am at a lost. Help Please!
Graphics Card - ATI 5970 - not overclocked.
AMD Catalyst 12.10
Windows 7 64-bit.
Intel Core i7-3770K - Not overclocked
8 GB of RAM
Corsair tx750w Power Supply
My monitor- Asus PB278Q
Gigabyte G1. Sniper 3 ~ motherboard.
SSD as my boot HD --240GB.