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Toby_NO Author

Level 1

4 points

Unstable monitor connection MacBook Pro

Hi guys,

I use my MacBook Pro (13-inch, 2017, Two Thunderbolt 3 ports) with two external monitors. USB C -> HDMI cable and HP EliteDisplay E243 monitor. I always have a stable connection from Thunderbolt port 1 and an unstable connection from Thunderbolt port 2. The monitor connected to port 2 blacks out every once in a while, and sometimes the monitor stays black. Only way to get it back to function is to disconnect and connect the USB C cable.

Any idea why, and how to solve this issue?

MacBook Pro

Posted on Aug 31, 2021 2:07 AM

Top-ranking reply

leroydouglas

Community+ 2024

Level 10

188,406 points

Posted on Aug 31, 2021 6:51 AM

Toby_NO wrote:

Hi guys,

I use my MacBook Pro (13-inch, 2017, Two Thunderbolt 3 ports) with two external monitors. USB C -> HDMI cable and HP EliteDisplay E243 monitor. I always have a stable connection from Thunderbolt port 1 and an unstable connection from Thunderbolt port 2. The monitor connected to port 2 blacks out every once in a while, and sometimes the monitor stays black. Only way to get it back to function is to disconnect and connect the USB C cable.

Any idea why, and how to solve this issue?

You can Try resetting NVRAM/PRAM http://support.apple.com/kb/ht1379

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Unstable monitor connection MacBook Pro

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