I have a GretagMacbeth Eye-One Display 2 for monitor calibration. Recently I have felt that it's not doing it's job. To my eye (an unreliable judge, I am well aware) the calibrations look dodgy.

Is there a way I can test its accuracy? Any advice would be much appreciated.

I've not used it, but there's a diagnostic utility here:
http://www.xrite.com/product_overview.aspx?ID=788&Action=Support&SoftwareID=506

Thanks Doug, I downloaded and ran that. It gave my unit a pass.

But I'm still not convinced. The white points it gives me are very green. I've tried it on about half a dozen monitors recently, a mixture of CRT and LCD, PC and Mac.

No problems with seeing black & white points, etc. I think the profiling is ok, I'm just suspicious about the calibration. Is it possible for one to be faulty, and the other to be good?

Anything is possible, of course. You might want to contact tech support (at the same site you got the utility from). Have you tried using it in advanced mode? Is it in all apps, or just Photoshop? Does this webpage look green?

Maybe your eyes are playing tricks on you? Maybe you should try switching over to the default color profile and see if there's any changes on your display.

It could be a faulty panel itself hence your EyeOne wasn't able to make any changes to it. If your closer to me I would have kindly let you borrow my Spyder2Pro.

Update: I got a new unit, and yes, the old one was dodgy.

Thanks for reporting back. Sorry to hear you got a bad one, but glad you finally got it all sorted out. Must have been driving you mad.

Thanks Doug.

The usual story, it was good for eighteen months (the warranty period is twelve - groan!)

When considering a replacement, I looked closely at Spyder options, but in the end I couldn't go past the Eye-One again, despite this experience.