I have an i7-3770K on an Asus P8Z77-V PRO and am using the on-board Intel HD 4000 Graphics to drive two displays.
My displays are a Dell 3008WFP at 2560x1600 on DisplayPort, and a Dell 2407WFPHC at 1200x1920 (rotated 90 degrees to portrait) on DVI.
Running the latest drivers (8.15.10.2761) on Windows 7 Ultimate N x64.
32GB memory, water cooling, Intel 240GB SATA3 SSD and a 750W Corsair PSU round out the box.
When working (writing code, web surfing, watching video) on the machine, the video will quickly cut out on one monitor or the other and then come back. The 24" Dell on DVI handles this [in a small fraction of a second] like a champ and I hardly notice. The Dell 30" looses the signal, goes blank and then takes a couple seconds to reacquire the signal before showing the desktop again... it's REALLY annoying!!
Anyone seen something like this before, or have ideas?
I've changed the DisplayPort & DVI cables, tried a different motherboard of the same model, tried a motherboard from a different manufacturer (Gigabyte), hooked it up to a Dell 3011WFP (which re-acquires the signal much faster than the 3008WFP btw), reset monitors to factory defaults, and installed the latest drivers. To no avail.
Help?!?