![]() ![]() Please find the below images for your reference. Rebooting the external dock the screens are connected to. But when i connecting through VNC client (Tightvnc, Ultravnc), asking Authentication -> Entered password -> getting black screen only.Opening the laptop, unchecking and re-checking screen record permission for DisplayLink in system preferences > security & privacy > screen recording. ![]() Here's the problem I'm having: as soon as I log in AFTER waking the computer from sleep, the screens go black and THE SCREEN RECORD PERMISSION that was working perfectly before sleep IS FORGOTTEN. The repeatable problem that DisplayLink has not addressed in my posts is whenever my laptop (which is clamshell mode) goes to sleep or I tell it to sleep, it will wake up and the installed "login screen extension status" will wake up the external displays. ![]() If DisplayLink icon is in the top menu bar and there's an exclamation point in the icon, you can click and it'll tell you it doesn't have screen record permission. That extension will activate external screens for computer login when your laptop is in clamshell mode. If not, there should be a link to install. If you cant restart the computer the normal way, try to access the power button by pressing Ctrl + Alt + Delete. Sometimes all it takes is a simple reboot to get the system back on track. You can launch the application click on the icon and see if the "login screen extension status" app is installed. Whether the black screen issue began before or after login, you should first try to restart the computer. If it's not there, then the application is not running and external displays will not work. On laptop computers that have Touch ID, press and hold Touch ID.) Turn your Mac back on. If startup never progresses beyond an Apple logo or progress bar: Press and hold the power button on your Mac for up to 10 seconds, until your Mac turns off. Aso reconnecting the USB-C cable the monitors that were working do not detect the laptop any more.Īny ideas on how to investigate or resolve this problem, I can not see anything in the troubleshoot guideĭo you have DisplayLink running and in the top menu bar where you have clock, battery etc.? Look for an icon with 2 interlinked rectangles. If your Mac is stuck on this screen or keeps restarting. On the laptops my touch bar it still believes I have my two monitors connected, but will not display anything on the laptop screen. ![]()
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