Thanks for getting to the bottom of that! It’s still weird that it worked as the boot display but not after the driver loads, but these kinds of adapters can be really flaky in general so I think we can just chalk it up to the adapter being quirky.
I cleared the “new user” flag in the admin panel so you should be able to post normally now.
add nvidia-drm.modeset=0 to your kernel params.
Maybe that decision also expanded to Quadro GPU’s as well?
Though there are people claims Windows side doesn’t have such restriction anymore, maybe that comment is also not valid these days.
It was just a broken cable.
BTW, the BaseMosaic limit on GeForce was lifted to 5.
Ah, ok. Missed the last edited message of his.
Nice to know!