External Screen not recognised on 2018 MacBook Air with OS 13.0.1

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Level 1

8 points

External Screen not recognised on 2018 MacBook Air with OS 13.0.1

I have recently tried connecting an HP external screen that I regularly used with my MacBook Air about 18 months ago. There have been several operating system updates since then and it now appears that the screen is not recognised.

The connection is USB-C and the screen has no external power supply. I have tried the connection through a powered hub in case the drain on the MacBook was too much but the screen says there is no signal.

The only display the MacBook Air gives as an option is the main TV connection via AirPlay.

Anyone have any ideas about how to fix this and get the USB-C screen to connect?

MacBook Air 13″, macOS 13.0

Posted on Dec 3, 2022 7:06 AM

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Answer 1

Best reply

jeffreythefrog

Level 6

12,044 points

Dec 3, 2022 7:47 AM in response to GP81

ok. the next thing I would try is an SMC reset as well as an NVRAM reset.

please see these apple support pages:

How to reset the SMC of your Mac - Apple Support

Reset NVRAM or PRAM on your Mac - Apple Support

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Answer 2

Dec 3, 2022 7:36 AM in response to GP81

I would try going into System Settings > Displays. then in the panel on the right, you can press and hold your keyboard's "option" key. the "Night Shift" button will become the "Detect Displays" button". then click the "Detect Displays" button.

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Answer 3

GP81 Author

Level 1

8 points

Dec 3, 2022 7:44 AM in response to jeffreythefrog

Thanks jeffreythefrog but this still does not recognise the screen. I had high hopes for this as well.

Graham

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External Screen not recognised on 2018 MacBook Air with OS 13.0.1

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