Screen Blackout | 2015 13" MacBook Pro | Henge Dock | Dual A1407 Thunderbolt Displays

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Screen Blackout | 2015 13" MacBook Pro | Henge Dock | Dual A1407 Thunderbolt Displays

For the last few years I have run my 2015 13in Macbook Pro in a Henge Dock with dual 27in Samsung monitors, connected to the Docking Station Thunderbolt outputs via TB to HDMI adapters and never had any problems. I have literally just upgraded my monitors to dual Apple 27in A1407's and they both flicker, intermittently momentarily going to a black screen and coming back on. However, If I connect the A1407's directly to my Macbook the problem goes away and everything works as it should. Given the Henge Dock is specifically designed for my model of Macbook, with matching outputs I don't understand why they won't work properly. Anyone else had this problem? Is there a fix for this or even any insight someone can offer?

MacBook Pro 13″

Posted on Sep 19, 2024 4:33 AM

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Answer 1

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KennyWW Author

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Sep 19, 2024 10:21 AM in response to neuroanatomist

I have no idea other than it’s specifically designed to fit my MacBook and it’s 10 years old. That said I have resolved the issue by removing the TB cables that came with the dock and plugged the display TB cables in directly so they connect to the laptop without any third party cables in between. Working flawlessly now. Thanks for taking the time to respond.

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Answer 2

Sep 19, 2024 10:57 AM in response to KennyWW

Good! Not all TB/USB-C cables are created equal, and some displays are very sensitive to cable length, as well.

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Answer 3

Sep 19, 2024 8:50 AM in response to KennyWW

What model of Henge dock do you have? If it's an older TB3 version, that has one TB3 output and one USB-C output (along with a DisplayPort).

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Screen Blackout | 2015 13" MacBook Pro | Henge Dock | Dual A1407 Thunderbolt Displays

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