This is my third time having problem installing Nvidia drivers on Ubuntu (14.04). What’s worse is that I could not remember how I fixed them last time.

Hope this blog post will prevent me from pulling my hair out for the 4th time.

So, I installed Nvidia driver as usual:

After it’s finished, I tried to load the module:

Well, it turned out that I need to also install another linux-image package: linux-image-extra-3.13.0-70-generic. If you try to install this package on your machine, ensure that you match the version of the kernel too; i.e. 3.13.0-70 in my case.

Thanks to people in this link: