monitor turns off turning off the kitchen light

I know that sounds weird, but I have a problem for some time now. I have a trash can end 2013, Mac Pro and Eizo monitor connected by a miniDisplayPort to DisplayPort cable. When I turned off the light in my kitchen, the monitor lost the signal from the Mac for about 10 seconds, and then returned. It was an annoying problem, but I could live with it.

Now, after the last update to OSX, the problem got worse. The screen loses the signal, but can't find again as before. Even if I unplug & plug the cable displayport, I can get the screen on again once. Only if I use a MiniDisplayPort to DVI, I can make it work with a bit of luck. Then, when I plug the miniDisplayPort to DisplayPort cable and unplug the DVI adapter, it finds its 'report once again... also with a bit of luck and after switching around between outputs 6.

I have no idea how to solve this problem. And I can't use the DVI adapter because it does not support native of 27 "screen resolution (only until 1920 px I think).

Any idea on what could be the cause of this problem is welcome!

I would try to eat the Mac and the monitor by a UPS (uninterruptible power supply).

Also try plugging the Mac and the monitor in the taken away from the light switch.

Sounds like you have an electrical problem in the House

Tags: Mac

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