Framework deranged_furby • Now • 100%

AMD Ryzen 13, of docking stations and MST

Hi folks, TL;DR, I'm trying to wrap my head around how MST-enabled docks work. To my knowledge, they're fully fledged computers, so it would make sense it's using a completely different protocol than the DisplayPort tunneled through USB-4 (which AMD has gimped to 1 instead of 2). ***which would mean that the FW13-Ryzen should be able to utilize the numbers of displays an MST-enabled dock offers***. I keep trying to find information on this. I find the wiki-stickied post on the framework forum is not really helping since they bungle both Intel and AMD framework toghether in the support matrix... Anyway, Here's what I figured out so far. Everything below is only about the two upper USB4-ports, since the limitations of the other ports are well documented. - No MST controller on dock? * Needs display port through USB4. * AMD gimped the usb4 controller and ***only supports ONE attached display per USB-C ports*** * On Intel-based laptop, it would be supporting two displays on non-MST docks, since Intel TB4 has two display channels in a single connection. - MST Controller on dock? * With intel, does it multiplex each of the two channels or it's a different beast? * Macbooks don't support MST, stuck with SST, so with certain docks that supports MST, that cuts the numbers of external displays down to half + 1 mirrored. * ***WHAT ABOUT FRAMEWORK???*** Is it like a MBP? Is MST a completely different beast? When you have a TB4 dock that supports 4 displays WITH MST, like [these insanely expensive Satechi ones](https://satechi.net/products/thunderbolt-4-multimedia-pro-dock), does it matter if it's AMD or not? What I'm trying to wrap my head around is, does MST needs the two DisplayPort channels to output on 4 different monitors, or it's negotiating a completely different protocol to tunnel the pixels to the attached displays? I currently got a triple screen configuration. I love it. However, it's going through an external GPU and I'd like to get rid of it. It's an 'old' vega64 that I could repurpose for other things, would make my desk cleaner, etc. OTOH, I love the idea of having just ***one*** cable plugged in to my laptop. So, would a dock with MST, that says is supporting TB4 and 4 displays, works with more than two displays on the Framework Ryzen 13?