Warning: rpmfusion nvidia driver needs a special xorg.conf setup.

[Linuxguy123]

Some of you may know this, but I didn't and thus I'll share what I
learned.

The rpmfusion nvidia driver needs a special xorg.conf file.  It might
not operate properly with a file that previously operated properly with
say a livna sourced driver. 

Specifically, it needs this to be present:

Section "Files" 
	ModulePath "/usr/lib/xorg/modules/extensions/nvidia" 
	ModulePath "/usr/lib/xorg/modules" 
EndSection

Right now I am unsure if the xorg or nvidia xorg.conf configuration
tools will put both these lines in the xorg.conf file.  I doubt they do,
actually.

You can read more about this issue here:
https://bugzilla.rpmfusion.org/show_bug.cgi?id=197

I hope this helps someone.