[MacTUG] New MacMini problem

[Richard Crispin]

Hi All
We have just upgraded all of our classrooms with new Macminis. The minis are in a podium and use a mini-display port to vga adapter to connect to both a monitor and projector. We can also connect a laptop and there is a switch that selects the input. They seem to be working great except for 1 (out of 11). With this one the computer does not seem to recognize the the vga cable that is connected to the adapter. I have replaced the cable and that has not helped. The funny thing is if we connect a laptop to the vga cable it is recognized. If I then move the cable back to the mac then the mac works properly. 
I am wondering if there is a way to shut off the HDMI and force the Mac to only use the thunder port for the display.
I have looked but have had no look with this.
Richard


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Richard Crispin      Phone: 519-884-8111x28260
290 Westmount Rd N   E-Mail: rcrispin at uwaterloo.ca
Waterloo, ON  N2L 3G3
Canada
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