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Black screen when plugging HDMI

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Im having similar issue with my HS setup, dell latitute 3480, i5-7200U

Once the hdmi plugged in, the laptop display went blank, only could see the external tv

But, when i put my laptop to sleep & wake up again, both screen got display (hdmi still connected)

Even the hdmi could be plugged off & in (after sleep), the laptop display is fine


What could be the culprit?

Dell’s MacBook Pro IORegistry.zip


Edited by gengstapo

Well, you have contradictory/messy graphics settings in your Clover config so start by fixing that (properties injection in Devices section vs. settings in Graphics section vs. patch in Kernel & Kext Patches section).

Edited by Hervé
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