I encountered this issue with the nvidia_384 modules.
modprobe: ERROR: could not insert 'nvidia_384': Package not installed
To resolve I did: apt-get remove --purge shim-signed apt-get install --reinstall nvidia_384
After those two commands, modprobe succeeded. I ran the apport command.
I encountered this issue with the nvidia_384 modules.
modprobe: ERROR: could not insert 'nvidia_384': Package not installed
To resolve I did:
apt-get remove --purge shim-signed
apt-get install --reinstall nvidia_384
After those two commands, modprobe succeeded. I ran the apport command.