FC20 + kernel 3.18.5 + nvidia does not work

[Frédéric Bron]

Be careful before upgrading. I get the following error in Xorg.0.log:

[     8.095] (EE) NVIDIA: Failed to initialize the NVIDIA kernel
module. Please see the
[     8.095] (EE) NVIDIA:     system's kernel log for additional error
messages and
[     8.095] (EE) NVIDIA:     consult the NVIDIA README for details.
[     8.095] (EE) No devices detected.

and no graphical user interface!

Frédéric