DVI to MiniDisplayPort Adapter Issues

Hi there all,

At the university I work at we have recently updated our MacPros (used for video editing) from Lion to Mountain Lion.

Previously, we have used Kanex DVI to MDP adapters for the secondary monitor for each mac. These do not appear to work on the new operating system.

Unfortunately it looks as if we're going to have to buy 12 Apple-licensed adapters, but I just wanted to pop in and check that there were no current solutions to this problem. Regardless if it can be fixed or not, I'm going to purchase one Apple adapter tomorrow to see if it resolves the problem.

I have also (obviously) tried switching the monitor inputs around but that has not worked.

If anyone has any suggestions please let me know, just in case we can save $600 or so.

Thank you!