You could try installing the new Nvidia installer package, nvidia-inst.
It can help you
- use Jonathon’s repo that includes e.g. nvidia 390 series driver
- install the nvidia 390 driver
- possibly install bumblebee
Check the options with command: nvidia-inst -h.
Setting up Jonathon’s 3rd party repo: nvidia-inst --legacyrepo
Test only without changing anything: nvidia-inst -t