mac os sierra external display not working

Mac os sierra external display not working mac os#
Mac os sierra external display not working upgrade#

I cannot even try to reinstall the OS, as no video works just after reboot. I've the a similar problem with my MBP 15' Retina and an AOC Q2577PWQ that's a 25' with a resolution of 2560x1440 I've noticed that from the section 'Monitor' on the Mac infos is recognized as a 30.5' so that the resolution is completely wrong and very bad.

I'm stuck and have no idea on what to do. I've tried to boot into safe mode or recovery mode, but the retina monitor remains black, as well as any other external display (the same happens if I try too boot with or without a connected external display). I've tried to reset NVRAM and SMC: no effect.

Mac os sierra external display not working upgrade#

If your Mac has inherited some problems, then an upgrade wont be able to fix it.

Mac os sierra external display not working mac os#

After this sequence the retina monitor goes back on (and only that!). Starting with macOS Mojave 10.14, you can turn on Prefer External GPU in a specific app's Get Info panel in the Finder. High Sierra external monitor issues, MacBook Pro/Air not detecting/recognizing external display/monitor on Mac OS High Sierra, high sierra display not worki. Hence, we are going to outline a way of reinstalling High Sierra MacOS 10 nov. To restore the situation I need to put the mac to sleep, plug in an hdmi monitor (which does nothing), wake up the mac and eject the plug. If youre using a Mac with Apple silicon: You can connect one external display to your Mac using. not all screen resolutions will be appropriate for your particular Mac. The Retina monitor 'blinks' but not signal is detected on external displays.Īlso, after rebooting, also the retina monitor goes completely black (the mac has booted, because I can trigger Siri commands!). Click Start and open the Dell OS Recovery Tool application. Regardless of whether youre using an external display, or youre happy with.

I've tried HDMI and DisplayPort to VGA adapters. I've just upgraded to macOS Sierra on my MacBook Pro Retina Mid 2012.Īfter the upgrade, my Mac is not recognizing any external display: