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I had the same issue, But at minimum brightness, there is nothing visible at all. So, it works like it's turned off. (Mine is Macbook Pro Retina with OS X El Capitan 10.11.1)


Just found a suggestion that solved my problem here. It is the Intel "Display Power Saving Technology" that is to blame. Disable it like so: Launch "Intel HD Graphics Control Panel" by right clicking and selecting "Graphics Properties..." from your Intel HD Graphics tray icon Click Power Choose "On battery" Select "Disable" for Display Power Saving ...

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