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yevgenyofer Author

Level 1

4 points

External display for MacBook

I have Macbook Pro 16 and I'm connecting it to an external display via original Apple hub to HDMI. Sometimes after unblocking Mac external display shows black screen, but Mac detects it as connected and I can move mouse cursor over Mac screen. After reconnecting display It shows an image and loses it again approximately in 1 min. Also it shows image if I turn on display mirroring. I tested few HDMI cables. Also I used this monitor with my old Macbook Retina 2012 and all was perfect.

MacBook Pro 16", macOS 10.15

Posted on Feb 24, 2020 2:27 AM

Best reply

leroydouglas

Community+ 2024

Level 10

184,080 points

Posted on Feb 24, 2020 5:32 AM

yevgenyofer wrote:

I have Macbook Pro 16 and I'm connecting it to an external display via original Apple hub to HDMI. Sometimes after unblocking Mac external display shows black screen, but Mac detects it as connected and I can move mouse cursor over Mac screen. After reconnecting display It shows an image and loses it again approximately in 1 min. Also it shows image if I turn on display mirroring. I tested few HDMI cables. Also I used this monitor with my old Macbook Retina 2012 and all was perfect.

macOS 10.15

Verify your macOS is up to date—

Combo update macOS 10.15.3 https://support.apple.com/kb/DL2030

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

Get help with video issues on external displays connected to your Mac - Apple Support  https://support.apple.com/en-us/HT201177

if no resolve—

Apple Feedback http://www.apple.com/feedback

Feedback assistant to file bug reports: https://feedbackassistant.apple.com/welcome

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External display for MacBook

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