cable matters usb to hdmi not working mac

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) Tips to fix problems Make sure the USB-C connector on the adapter is securely plugged into the USB-C port on your Surface.Switching off and unplugged the display, plugged it back in etc.Reseting the SMC and NVRAM and tried all 4 usb slots.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.USB-C to HDMI cable adapter supports 4K60Hz video resolution support for ultra high definition USB C HDMI adapter supports high precision audio such as LCPM, DTS, and Digital Dolby Low-profile USB-C. Cable Matters Adaptater USB C to DisplayPort USBC to HDMI adapter connects a laptop with a USB Type-C port to a monitor with HDMI input HDMI USB C adapter requires DisplayPort Alternate Mode support to view video over USB-C Windows computers may need updated drivers from the manufacturer for this HDMI USB-C adapter to work properly.

I'm trying to connect a MacBook Pro 16' to my external display through DisplayPort with these devices :

Cable matters usb to hdmi not working mac