Thks leigh123linux, upgrading selinux-policy, selinux-policy-targeted and libsepol to
from koji fixed the issue =)
As for the blank seconday monitor, it was just a matter of enabling it using nvidia-settings, and everything was back to normal.
Kudos to nVidia and RedHat for working together
to fix this. It's sad that (apparently) it's still not clear
for both parties who to contact to solve some issues, IMHO both companies should assign official contacts to help solve issues like this faster. Users would be most grateful, and it would spare a lot of badmouthing.