ZoneMinder Forums

I resolved. I noted it had some links replaced by Nvidia Driver (compiled from source, with patch from NVidia).
1 - removed driver:
sudo ./NVIDIA-Linux-x86_64-340.108-patched-kernel-5.14.run --uninstall

Instaled NVidia from repositories:
sudo dnf update -y ; sudo dnf install xorg-x11-drv-nvidia-340xx akmod-nvidia-340xx xorg-x11-drv-nvidia-340xx-cuda
Voila! Libraries totally operational (antique links from Nvidia removed). ZM running.

I realise that the GPU stuff is all {b}leading-edge for ZM and getting it to work is like the olden days of package compilation (Nvidia, opencv etc really isn't simple to install) so I'll leave it parked as working for me and revisit when it all becomes a bit more formal.
Mobdro Vip

After Kernel 5.14.xx, broken again. NO way to install compiled driver (it breaks again ZM).