Dual Cinema Display get dim

After installing 10.11.5 one of my two Cinema Display 30 '' continues to go dim.   I can force them to get more light but it always just continues to go to the side Sun its own.

As it has a mind of its own!

It's already happened, but I have no ideal how to solve this problem.

Help!

Hi Rubalcava Boan,

Thank you for using communities to Apple Support and for details on your screen. I understand that one of your displays will dim on its own and you want to avoid that from happening.

The first thing you want to do is check your set display using section below.

Connect multiple monitors to your Mac - Mac Help

If everything is configured correctly, the next step that I recommend is to try changing the cables or test with different cables to ensure that there aren't any problems with your cable. If you have any other Mac that you can test on who can also help determine if there is a hardware problem.

If you're still having problems after performing these steps, the next thing that you can try resets your MSC. Reset it will not erase your personal data, it resets just a few hardware settings the steps for this are easy.

Reset the SMC on Mac desktops

Follow these steps for iMac, Mac mini, Mac Pro and Xserve.

  1. Stop the Mac.
  2. Unplug the power cord.
  3. Wait 15 seconds.
  4. Reconnect the power cord.
  5. Wait 5 seconds, then press the power button to turn on the Mac.

Alternatively, you can take a glance at this article for a list full of what the covers of SMC reset.

Reset the management system (SCM) controller on your Mac - Apple Support

I hope this helps.

See you soon!

Tags: Mac OS & System Software

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