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by tjoff 2542 days ago
I'm not sure how the bubble you live in came to be but for ordinary desktop/laptop hardware that is as false as can be.

And there is a very simple reason for that. All desktop PCs and laptops are sold with windows, if no support exist the hardware as a whole will not exist.

Meanwhile in linux land I still can't use my three monitors because displayport MST doesn't work with the open source AMD driver. Support has existed for quite a while, but it seems none of the five people on the internet that have actually tried it has gotten it to work. Just one of the many driver issues I currently have on a couple of machines with linux.

> YMMV, but as far as I know that's more or less a solved problem by default (for X anyway) with DRI3.

Just no.

2 comments

It is not false. Complaining about obscure gpu driver feature not working in Linux kind of proves the parent's point. Most usual hardware works out of the box on Linux now, except for the nvidia cards, but even that can be made to work with their binary driver. If the AMD driver does not support some obscure feature, that is on AMD. They work on it, complain there, but naturally some things have higher priority than driving multiple monitors from a single port.
I'm not blaming linux for manufacturer not supporting linux well enough. But I'm stating drivers are an immense issue for linux - regardless of who is to blame.

Maybe I shouldn't have started with an "obscure" example. Maybe that the driver crashes if displays are awakened from sleep? Mind you - only waking the screens from sleep, not the entire system (that doesn't work either, but I don't know which driver that is to blame for that yet).

Or that ubuntu LTS are just incapable of turning off most machines I've installed it on? (machines that did exist for a while when the LTS version came out).

Yeah, those other issues are real and they suck, especially when one uses the most up-to-date software and they still happen. Point taken.
For what it's worth it is my experience that displayport MST has never worked reliably on any OS or hardware whatsoever. I gave up on it and am thankful I can now just buy a thunderbolt dock with multiple video outputs.
MST on a NUC was pretty seamless for me when I used it.