MacBook Pro 16" + Apple Cinema Display External monitor black after reboot

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MacBook Pro 16" + Apple Cinema Display External monitor black after reboot

Post by funnyinterestingcool » Fri Dec 25, 2020 11:20 am

If you use an Apple Cinema Display with your MacBook Pro (Dual Link DVI USB Dongle + USB-C to Mini DisplayPort Adapter, USB Type C (Thunderbolt 3) you might also be experiencing the Cinema Display does not auto-turn on while connected to your MacBook Pro if your laptop lid is closed. You need to reconnect the USB-C to Mini DisplayPort Adapter in order for the Cinema Display to work again externally. This only appears to be an issue while booting or rebooting into macOS. Ironically, the issue is not present if you use Boot Camp.
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