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Shutting down computer or restarting does not fix. (and tried a variety of variations on this). ![]() Tried with two separate TVs and different HDMI cables. MINI DISPLAY PORT TO HDMI NOT WORKING MAC PROAfter putting the computer to sleep (lid closed) and opening, HDMI no longer works, regardless of TV or adapter.įully reproducible on both of our macbook Air computers. rts High Speed Updated Mini Displayport Thunderbolt to HDMI Adapter for Unibody MacBook Pro iMac MacBook Air Mac Mini Laptop (37.1 cm, White) 3.8 out of 5 stars 789 1 offer from 398. The Amazon adapter was purchased a couple weeks ago and the Kanex was purched in 2012 and has worked flawlessly up until a couple months ago. We have the Amazon mini display port to HDMI as well as the Kanex iAdapt Mini DisplayPort. ![]() We have two MacBook Air computers (info below) in our office. I believe there is a bug somewhere with an OS update. Select any resolution and refresh rate that your display supports.Choose Displays from the View menu to open the preferences pane.From the Apple () menu, choose System Preferences.If the display does not come up, was previously set to an unsupported resolution, and still results in no video: Start by resetting the Mac's parameter RAM. You can reset the Mac's parameter RAM and SMC. If available, try using a different display and or adapter (or use a different connector by using DVI instead of VGA, for instance). MINI DISPLAY PORT TO HDMI NOT WORKING MAC SERIES
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