Comment 3 for bug 1946312

I experienced a similar issue in Ubuntu 22.04 with a newer driver version.

Please find the discussions & findings here:
https://forums.developer.nvidia.com/t/unknown-error-from-cuda-11-7-ubuntu-22-04-64bit/220384/16

In a nutshell:
Based on the modinfo output, nvidia as well as nvidia-uvm were signed with the same key but nvidia-uvm got rejected during secure boot, the other nvidia modules were loaded as expected.
Disabling secure boot solves the issue but that's not the way it should be.

I hope the info helps.