NVIDIA kernel module missing.

Hello, After an update of F27, the system crashed (completely stalled, required to manually turn it off). The update installed kernel 4.17.9. Since then I have this message at boot: "NVIDIA kernel module missing. Falling back to nouveau" and some white screen when a Plasma session is started. I uninstalled nvidia drivers with dnf remove "*nvidia*" reinstalled them with dnf install xorg-x11-drv-nvidia akmod-nvidia I still have the same message "NVIDIA kernel module missing. Falling back to nouveau" The computer is a laptop with nVidia GeForce GTX 560M. Any idea? F