Yeah, but it worked perfectly at the correct resolution until I upgraded to
10.9.2. I don’t know what in the operating system might have caused it not to
work anymore, but whatever it was, it’s fixed. I just wish I’d known about that
P cable when I originally got Thunderbolt.
--Bob Whitmire
Certified Neanderthal
On Mar 11, 2014, at 8:03 PM, Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
wrote:
> 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.
--
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