gengstapo Posted February 17, 2020 Share Posted February 17, 2020 (edited) @Hervé 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 config.plist.zip Edited February 17, 2020 by gengstapo Link to comment https://www.insanelymac.com/forum/topic/342634-black-screen-when-plugging-hdmi/ Share on other sites More sharing options...
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