@Colin has built new nvidia-390 and nvidia-440 packages for OM Lx. These new packages include the nvidia-settings with man page.
As usual new packages like this go to testing repositories for Lx 4.1 and Rolling branches. So we need people with nVidia hardware to test these and tell us if they are OK or need work.
To install in OM Lx 4.1 x86_64:
$ sudo dnf install nvida-390 --enablerepo rock-testing-x86_64-non-free
that should install
$ sudo dnf install nvida-440 --enablerepo rock-testing-x86_64-non-free
which should install
For znver1 you remove
x86_64 in the command string and replace it with
If you are using Rolling or Cooker you should know how to do this, or be able to figure it out.