Frage: After Update from 10.13.3 to 10.13.4 my 2K monitor stays black.
As said it is that easy. After Update from 10.13.3 to 1013.4 my brand new 2K display on mac mini (6,1 / late 2012) stays black. Only 1920x1200 is available via Thunderbolt to DisplayPort with my former old ASUS ProArt display - duh, lucky that i still have him. Wish i hadn't upgraded. I read the news about problems with the update but I thought affected would be only software like AirMirrror and not a physical connected 2K display (2560x1440). The monitor is active in system settings, active windows are on the (black) screen but the monitor turns not on. Message is "no signal". My new 2K monitor is for the next while useless. Don't know whether i should go back to 10.13.3. with a time machine backup. Dear Apple, you have a quality problem. You can't afford that if you request high prices for your systems
Mac mini, macOS High Sierra (10.13.4)