Installing lubuntu 15.10 on an Asus K501UX laptop with UEFI/SecureBoot enabled.
When you first try to install lubuntu on an Asus K501UX, you will have a black
screen and no clue about what is happening.
This is the situation I faced and this guide is the result of 5 hours of hair-pulling and cursing at various corporations including Asus, nvidia, Microsoft and even Canonical.
This guide will hold you hand until you can boot to the desktop. How to install the nvidia drivers is not included in this guide.