FACT : "Cannot upgrade ubuntu 17.04 to 18.04"
WHY THE HECK DID I INSTALL 17.04???

Never Install non-lts versions 🤕

Even though In version 18 they reverted back to xorg as default graphic server after apps comparability issue with wayland. But i still wouldn't recommend it if you're going to work in the field of AI and ML. There is little to no official support for CUDA Driver and it's library