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I'm going assume no DisplayPort MST support in Ventura?
- Thread starter infernoguy
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Best way to describe it: https://www.intel.com/content/www/us/en/support/articles/000059105/graphics.html
I'd check for you but I don't have the right adapter. My Mac mini 2018 running Ventura has TB3/USB-C ports. Currently using the HDMI port.
Another example.... I have a MacBook Pro 14 (base model) and a Dell WD19S dock for my work laptop with 2 1080p monitors connected to it. If I plug my work Dell laptop into the dock it can get 2 separate screens. If I plug my MacBook into the dock I get duplicate screens. This is because the dock uses DisplayPort MST which Windows supports but the Mac does not.
Thanks, I now understand your use case and learned something in the process. I have nothing to contribute except I did find this discussion on the Apple support forum which, for me, helped explain why Apple will be unlikely to provide support for true multi monitor MST over Display Port, one word: "bandwidth".
Bandwidth is not an excuse since DisplayPort 1.4 and DSC.
A DisplayPort 1.4 MST Hub that supports DSC can connect three 4K 60Hz displays if the GPU and drivers support DSC and MST. I''m not sure what the overhead of MST and FEC is (DisplayPort 1.2 spec says 1.6% for MST; some docs say 2.4% for FEC). HBR3 link rate should be able to do four 4K 60Hz displays with DSC@12bpp (or maybe slightly less than four - it might require 59Hz). Without overhead, HBR3 with DSC@12bpp (the default for macOS) has the equivalent bandwidth of 64.8 Gbps. DSC@8bpp would increase that to 97.2 Gbps (five or six 4K60 displays).
Also, what about when DisplayPort 2.0 starts appearing (I think there may already be GPUs capable of that)? DisplayPort 2.0 can have as much bandwidth as Thunderbolt 40 Gbps without DSC.