I read people would alter some monitor settings, I didn't expect much but luckily my monitor allowed me to swap the DisplayPort version. I knew the cables were alright and the monitors would work fine with Windows and through the DisplayLink (via the Dock). I was reading up on compatibility, but I couldn't really figure out what was going on. I tried both USB-C to HDMI as well as USB-C to DisplayPort cables, which both gave the issue that the monitor would show up for a couple of seconds after the signal dropped again. For this to work on the Mac, I needed to install DisplayLink software, but for the 4K monitor, this causes lag because of CPU spikes when the graphics card needs to do stuff. When I tried to hook up my AOC 4K monitor, I first tried it through my Lenovo Thinkpad Dock. After that, my USB-C to DisplayPort cable works as just fine, without lag and in all resolutions (up to 4K). What worked for me was to go to my monitor settings, where I could change the version of DisplayPort signal from 1.2 to 1.1. I've raised the issue to the Apple support, but of course no answer, and I think no hope of this getting solved.īasically, I need to buy a new screen. It also seems to be a software problem, since it works under Windows/Bootcamp (!) It looks like incompatibility between MacOS and this iiyama model (or I guess this DisplayPort version). Is it possible that my external display isn't compatible ? I've tested the cable, adapter and screen with another computer and everything works fine. Force detect the display (the display goes out of sleeping mode, but then wont be detected).Switching off and unplugged the display, plugged it back in etc.
When I plug it in, the external display goes out of sleeping mode, but the MBP does not detect it and after a couple of seconds, the display displays a "no input detected" message and goes back to sleep. External display : iiyama prolite b2783QSU.Cable Matters Adaptater USB C to DisplayPort.I'm trying to connect a MacBook Pro 16" to my external display through DisplayPort with these devices :
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