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Level 1

13 points

Macbook Pro Mojave won't connect to HDMI projectors + monitors

I have a MacBook Pro (15-inch, 2017), 3.1 GHz Intel Core i7, running Mojave 10.14. When connecting the computer via USB-c to HDMI adapter to an Epson PowerLite 2030, no signal is detected. The computer knows it is connected to a projector, and the projector knows it is connected to the computer - but neither can speak to each other. Not only this, but signals sent to monitors become disrupted gray static. I have visited the Apple Store, but since the signal loss is on/off when it comes to monitors, they were unable to reproduce the problem.

This problem did not exist running high sierra.

This problem does not exist with Mac's pre-2017 with the same setup.

I have tried multiple adapters including Apples.

I have tried multiple HDMI cord including the best offered at the Apple Store.

I have tried numerous projectors and monitors.

MacBook Pro (15-inch, 2017), macOS Mojave (10.14)

Posted on Oct 20, 2018 11:39 AM

Best reply

CorSat9 Author

Level 1

13 points

Posted on Dec 23, 2018 9:07 PM

Update: While I can not get a signal through any adapter, I found that a USB-C to HDMI cord does the trick. Here is the one I purchased and it is working like a charm. I still do not find it acceptable that adapters do not seem to be working with a normal HDMI cord so if anyone has anything to add - please do.

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39 replies

Nov 7, 2018 2:27 AM in response to CorSat9

Did you try changing the display resolution in System Preferences or toggle the Mirror option (command-F1) and see if there’s any changes?

Nov 13, 2018 2:55 AM in response to CorSat9

Right – on my laptop the screen blinks black as if it were changing resolutions to match the external monitor.

Nov 15, 2018 2:39 PM in response to Luis Sequeira1

In my case, it's one of these: https://www.amazon.com/BESTHING-USB-C-3-1-Hub-Adapter/dp/B073LMLXY2

Not that exact one, but similar. Third-party usb-c to hdmi adaptor.

mamisho

Level 1

4 points

Nov 19, 2018 3:00 PM in response to Shawn Hoffman

I got the same issue with de MBP2018 running Mojave.

Nov 27, 2018 1:12 AM in response to tcwri

Glad that you got it working! Thanks for coming back to tell us.

CorSat9 Author

Level 1

13 points

Dec 26, 2018 3:31 PM in response to CorSat9

Next Update: Even that cord did not solve the problem. I can't delete that I clicked "solved problem"

RoRo1

Level 1

4 points

Jan 11, 2019 3:30 PM in response to CorSat9

I've used the iPhone lightning to HDMI connector and run my presentations as I can't use my laptop. It's a workaround, but helps if nothing else works.

Feb 26, 2019 1:51 AM in response to istvan-aal

I am not familiar with the specific adapter. Is this one of the "multi-function" adapters, and if so maybe it needs the "displaylink" driver to work?

CorSat9 Author

Level 1

13 points

Feb 26, 2019 11:59 AM in response to Ajmulakel87

I have used multiple adapters and a usbc to hdmi cord with no adapter and the same problem exists so my bet is software not working with the hardware - not just the hardware.

Macbook Pro Mojave won't connect to HDMI projectors + monitors