Display Glitch When Waking from Sleep with External Monitor
I have a 2019 16" MacBook Pro and an Asus external monitor.
Sometimes when I wake the computer after it has been asleep for a while, the internal display is unusable while an external monitor is connected. The external display shows "No Input" and the built in display turns black with the occasional flash of a distorted desktop.
If I disconnect the external monitor, then the internal display returns to normal with no issues until I reconnect the external display, at which point it becomes unusable again. The only way I've found to resolve this is to restart the computer, at which time everything works normally.
I've already tried resetting the PRAM and that didn't help.
MacBook Pro with Touch Bar