This is guide howto fix "Black Screen" problem with NVIDIA drivers and SDDM + Plasma.
I run here quick test, everything works normally example with Fedora 6.8.x kernels, but latest 6.9.x kernels won't work with SDDM and Plasma, still GDM and GNOME works normally.
Check full guide from:
https://www.if-not-true-then-false.co...