"Work", in this case, meaning you can get a display to run through one. I've tested DVI, VGA, HDMI, and DisplayPort across four different graphics cards (three AMD 5000-7000 series, and one SM750 card from ASRock Rack.
A console (CLI) runs great and is stable, but Xorg and Wayland (well, Weston at least) are a little less stable. And with the MMIO modifications we had to make to work around the Pi SoC's (BCM2711) flaws, things are a bit slow currently.
And other SBC SoCs seem to have similar PCIe hardware-level issues (like the RK3588 in the Pine64 SOQuartz, at least). Tons more detail can be found in these two GitHub threads:
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[ 4.5 ms ] story [ 20.3 ms ] threadA console (CLI) runs great and is stable, but Xorg and Wayland (well, Weston at least) are a little less stable. And with the MMIO modifications we had to make to work around the Pi SoC's (BCM2711) flaws, things are a bit slow currently.
And other SBC SoCs seem to have similar PCIe hardware-level issues (like the RK3588 in the Pine64 SOQuartz, at least). Tons more detail can be found in these two GitHub threads:
https://github.com/geerlingguy/raspberry-pi-pcie-devices/iss...
https://github.com/geerlingguy/raspberry-pi-pcie-devices/iss...
(Both issues are over GitHub's limit, so you have to show hidden items to see the whole progression.)
https://silodrome.com/ej-potter-v8-dragbike-widowmaker-7/
The illusion of absurd insanity:
http://www.bosshoss.com/
And blessed excess:
https://www.throttlextreme.com/48-cylinder-kawasaki-one-insa...