I have dual GTX 660 each one is connected via DP. One of them is connected to a u2713H and the pther one to a u2711.
All was well but then all of a sudden in the middle of working the u2711 went black and i got a message saying it's entering power save mode. when going to the OSD to the input settings i get a message saying i don't get a signal.
I've tried connecting the u2711 to the other card, i tried replacing the cable and connecting it to either card, still get the same thing.
It does work with DVI but the image is horrible and the text is unreadable. I also tried this plugged in to either GPU with the same weird results.
The resolution setting is correct (Native 2560x1440), I also reset the monitor to default settings, didn't help.
Tried updating GPU driver with clean install, tried powering it off for 2 hours, nothing helped.
I strongly suspect it went bad...
I don't think it is still under warranty i have it for a while now.