Arright. Here's the scoop. I've got a 2nd gen 15" Macbook Pro, and I just today received the Dell E248WFP monitor I'd ordered. The problem: I can't make it display ANYTHING for longer than a fraction of a second. I've got the monitor hooked up to my MBP by dvi cable (yes, securely). When I turn the monitor on, there'll be an image for literally half a second or so. Then everything returns to black. Similarly, when I change the Dell's resolution in Display Preferences on the MBP, the image appears for the same fraction of a second, then disappears. What in hell is going on? Help? Edit for the sake of some additional details: "Detect displays" gets no reaction out of the monitor. Strangely, if I turn off mirroring, some of my windows do go over to the Dell monitor (i think), but the monitor stays black, and you can't see them (I only know they're there because of the brief half-second just after turning the monitor on). Further, "Dell E248WFP" appears in the Displays icon in the menu bar. So by all accounts, it SEEMS like my MBP is recognizing the monitor, and it SEEMS like the monitor is getting some signal, at least some of the time. But why the screen goes dark instantly, I cannot figure out.