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by russelg 1636 days ago
DisplayPort over Thunderbolt is not a proprietary connector (this is what the Pro Display XDR uses).
1 comments
floatboth 1636 days ago
It's really stupid to force Thunderbolt usage though when USB-C has an alt mode for DP directly.
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Latty 1636 days ago
I believe the reason, IIRC, is it's actually doing two DP streams because one isn't enough bandwidth for the full resolution, which you can't do in alt mode where the PC is literally using the pins of the connection as though it were a single DP cable (although this may be more viable with newer DP specs these days, not sure).
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my123 1636 days ago
The DP altmode didn’t provide enough bandwidth, which is why the best experience is over the Thunderbolt alternate mode.

edit: you can in fact get HBR3 working, what's not working at full rate with DP instead of thunderbolt is the USB3 hub on the display.

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floatboth 1636 days ago
Oh it does? Nice. Kinda expected Apple to go full asshole mode on that.
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brigade 1636 days ago
You mean Intel - older Thunderbolt displays don't support USB-C alt-mode because Intel didn't support it as input until Titan Ridge Thunderbolt controllers.
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