My MBP (GeForce GT 330M) seems to recognize my Dell U3011, but I've run into the following:

  • Mini-DP to VGA adapter to monitor: Supports up to the VGA max of 2048x1280 just fine.
  • Mini-DP to DP adapter to monitor: Flickering to the point where it's dark 98% of the time.
  • Mini-DP to monitor using M-M Mini-DP to DP cable: Supports up to 1600x1200 fine, but silently fails (nothing shows up on the monitor above that).

I've borrowed a co-worker's $100 Apple dual-link DVI adapter and that works fine, but I'd like not to spring for one and just have the DisplayPort work like it should. Is there anything I can do? The Mac doesn't seem to complain; it just fails.


I have a Dell U3011 running at 2560x1600 (native resolution) connected via a mini-dp to dp cable. This is working correctly on both my MBP mid 2009 with a NVIDIA GeForce 9400m and a MB Air mid 2011 with an Intel HD 3000. Both computers can detect that they are connected to a Dell U3011 and allow me to choose the native resolution.

I am using a mini-display port to display port cable purchased at monoprice with product id 6007. The specs state that it is display port version 1.1 (8.64 Gbps) capable. Maybe the mini-dp to dp cable you are testing with does not have enough throughput?

  • Thanks for the detailed answer, Derek. I've read several success stories with my exact cable as well as mini-DP to DP adapters very similar to mine, and this cable does power the U3011 when coming from my desktop video card (6850 and 6950). I have product ID 6008, which is just yours but longer. I'm feeling that maybe my work MBP just isn't meaty enough? Mine is the mid-2010, and the specs explicitly state it can power 2560x1600. Oh well, I guess I may just have to resign this monitor to only home use. – Steven Oct 3 '11 at 20:27

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