After upgrade Fedora, every now and then, the Nvdia drivers fail and it falls back to open source drivers. Which is both nice, and annoying. Its nice because you can still use your computer, its annoying because anything that requires Nvidia drivers won't work. I have in the past fixed this by removing and re-installing the drivers, but today I decided to deep dive and find a proper fix to the problem. Here is the solution that I'll be using from here on out.
$ sudo nvidia-smi
NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver. Make sure that the latest NVIDIA driver is installed and running.
$ akmodsbuild /usr/src/akmods/nvidia-kmod.latest
* Rebuilding /usr/src/akmods/nvidia-kmod.latest for kernel(s) 6.0.14-200.fc36.x86_64: prep build install clean; Successfull; Saved kmod-nvidia-6.0.14-200.fc36.x86_64-525.60.11-1.fc36.x86_64.rpm in /home/grmrgecko/
$ sudo dnf reinstall kmod-nvidia-6.0.14-200.fc36.x86_64-525.60.11-1.fc36.x86_64.rpm
Last metadata expiration check: 1:17:09 ago on Sat 24 Dec 2022 07:36:36 PM CST.
Dependencies resolved.
========================================================================================================================================================================================================
Package Architecture Version Repository Size
========================================================================================================================================================================================================
Reinstalling:
kmod-nvidia-6.0.14-200.fc36.x86_64 x86_64 3:525.60.11-1.fc36 @commandline 42 M
Transaction Summary
========================================================================================================================================================================================================
Total size: 42 M
Installed size: 42 M
Is this ok [y/N]: y
Downloading Packages:
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Reinstalling : kmod-nvidia-6.0.14-200.fc36.x86_64-3:525.60.11-1.fc36.x86_64 1/2
Running scriptlet: kmod-nvidia-6.0.14-200.fc36.x86_64-3:525.60.11-1.fc36.x86_64 1/2
Cleanup : kmod-nvidia-6.0.14-200.fc36.x86_64-3:525.60.11-1.fc36.x86_64 2/2
Running scriptlet: kmod-nvidia-6.0.14-200.fc36.x86_64-3:525.60.11-1.fc36.x86_64 2/2
Verifying : kmod-nvidia-6.0.14-200.fc36.x86_64-3:525.60.11-1.fc36.x86_64 1/2
Verifying : kmod-nvidia-6.0.14-200.fc36.x86_64-3:525.60.11-1.fc36.x86_64 2/2
Reinstalled:
kmod-nvidia-6.0.14-200.fc36.x86_64-3:525.60.11-1.fc36.x86_64
Complete!
That is it, once you reboot, it should be using the Nvidia drivers as you can confirm with nvidia-smi
.