Re: 4.12.8-200.fc25.x86_64, nvidia 384.59/GT 710, KDE: black screens with cursor
It could be a selinux issue, see this commit
https://pkgs.rpmfusion.org/cgit/nonfree/xorg-x11-drv-nvidia.git/commit/?i...
or maybe having nvidia-drm.modeset=1 enabled has killed kde as well :-)
https://bugzilla.rpmfusion.org/show_bug.cgi?id=4632
without any logs it's just a guess (why do users nearly always fail to include logs?).