I install the dual-boot operating system on my computer. Usually, I use Windows 10 for gaming and youtube videos, but today I want to use my Ubuntu 16.04. I'm pretty sure that it works as I have installed, but I can't log in today. More precisely, I can log in the text interface rather than GUI system. After spending some time on Google, one method work. It seemed the driver of NVIDIA graphic card is crash. And the simplest way( still don't know what happen) is just re-install the drivers.
So, purge all the NVIDIA drivers and re-install the CUDA packages solves my GUI log in problem.
