Your problem was that you were running a DVI interface which was only
designed for HDTV resolution of 1920x1080 at 60Hz. What you needed for
DVI is Dual-link DVI. (from Wiki) "To support higher-resolution display
devices, the DVI specification contains a provision for dual link.
Dual-link DVI doubles the number of TMDS pairs, effectively doubling the
video bandwidth. As a result, higher resolutions up to 2560 × 1600 are
supported at 60 Hz.
By changing ports and using a more modern connection technology you
circumvented the DVI/HDMI signal limitation.
This will tell you about Thunderbolt which was developed by Intel
<http://en.wikipedia.org/wiki/Thunderbolt_%28interface%29>
I don't know what P/jack is either except some form of plug interface.
Chuck Norcutt
On 3/11/2014 3:10 PM, Bob Whitmire wrote:
> FWIW, should anyone else run into this problem, it’s fixed.
> Apparently with 10.9.2, one of the side effects was to render old
> cable technology obsolete. After an hour or two on the phone with NEC
> support answering detailed questions about my setup, the tech
> suggested i swap cables from the old one, which was DVI at the
> monitor and a DVI-to-mini (Thunderbolt) at the computer, with a newer
> cable that runs from the P jack on the monitor directly into the
> Thunderbolt port. What’s a P jack. Well, I haven’t looked that up
> yet. But it’s cleaner and simpler and it works, and an added benefit,
> according to the tech, is that it will give me more and better color
> than the old DVI cable with adapter.
>
> Cable arrived today. Works flawlessly. I now have my 2560x1440 back.
>
> But I have $50 fewer dollars in my pocket. Sigh.
--
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