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User profile for user: Andy Gaughan
Andy Gaughan Author
User level: Level 1
24 points

Macbook crashes when disconnecting from LG monitor

Hi,


I have a re-occurring issue with my MacBook and external LG Ultrafine monitor. Quite often, when I connect my MacBook to the monitor, I get a picture but the MacBook will not allow me to put audio through the monitor or use the built-in monitor video camera (neither show up in System preferences or any of the apps I use such as Teams, Zoom, FaceTime, etc). At this point, if I disconnect the monitor, the fan in the MacBook will fire up and then the laptop crashes and requires a reboot.


The display is connected to the laptop via a USB-C cable.


I know this is quite a specific issue, but interested if others have had similar experiences?


MacBook Pro 13″, macOS 10.14

Posted on Jan 6, 2021 9:31 AM

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User profile for user: jdo_apple
jdo_apple
User level: Community Specialist

Jan 8, 2021 3:10 PM in response to Andy Gaughan

Hello Andy Gaughan.


Thanks for reaching out to Apple Support Communities. We understand that your MacBook Pro crashes when disconnected from your LG UltraFine monitor. We will be glad to assist.


First, let's reset the SMC and NVRAM to see if the helps:


How to reset the SMC of your Mac


Reset NVRAM or PRAM on your Mac


If the issue continues, start up in safe mode and test: How to use safe mode on your Mac


Hope this helps.


Cheers.

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Macbook crashes when disconnecting from LG monitor

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