- Joined
- Jul 21, 2011
- Messages
- 379
- Motherboard
- Zbook G5 17"
- CPU
- i7
- Graphics
- AMD WX-4170
- Mac
I've had similar experience with passive usb-c to hdmi cables. If UHD630 igpu is running the port, it works in Windows but not in OSX.After digging some more, I think the not working DP -> HDMI cable may be caused by the cable not including an active DP -> HDMI2.0/1.4 converter which may be required for correct handling by macOS (it does work on Windows though).
The Flex IO HDMI (400/600/800) port is a 2.0a port which isn't supported natively by Coffee Lake (it only does HDMI 1.4), so it most likely has a LSPCON chip on board, which needs to be taken into account when configuring the ports.
I'll play around with it and report back if I find something useful.
Some monitors/TVs work, and some don't. But if the port is assigned to my GPU (AMD WX4170) then the cable works with all OS's.
Active converters always work.