I've tried to install the 396 drivers after doing...
sudo add-apt-repository ppa:graphics-drivers/ppa
...assuming that it allow me to install
vulkan, but apt doesn't allow me to install either of those.
EDIT: Sorry for not providing much detail at all.
I'm using Ubuntu Budgie 18.04, and kernel
I also have an Nvidia GeForce GTX 860M. This card is still technically supported by Nvidia.