Alors, lorsque tu installes le drivers nvidia via akmod, oublie nvidia-smi.
Le fait d'avoir installer le driver depuis le site n'as pas arranger les chose, mais allowerasing a dû corriger l'ensemble.
Après, as tu essayé ceci :
Howto/Optimus wrote:With Xorg server 1.19 (Fedora 25 and later), this feature allows buffer sharing between the Intel and the NVIDIA card when using Xorg (not relevant for Wayland).
Verify to have nvidia-drm-modeset=1 enabled looking in /proc/cmdline. If not enabled, you can run:
sudo grubby --update-kernel=ALL --args="nvidia-drm.modeset=1"
You need to reboot to enable nvidia-drm modesetting. Then you can enable Prime Synchronisation for your session:
xrandr --output <output> --set "PRIME Synchronization" 1
If everything works as appropriate, you should consider to edit /etc/default/grub and add the nvidia-drm.modeset=1 option to the GRUB_CMDLINE_LINUX_DEFAULT variable. If something didn't get right. You can recover using e from the grub2 edit menu at boot time and manually remove that option. Then on the next boot, use:
sudo grubby --update-kernel=ALL --remove-args="nvidia-drm.modeset=1"