I am going through the steps to be able to use my Wacom tablet (CTL-6100WL) and I am to the point where I am installing the linux headers however this happens.
(xenial)grace@localhost:~$ uname -r 3.18.0-18720-g7b8c1dc67cda (xenial)grace@localhost:~$ sudo apt-get install linux-headers-$(uname -r) E: Unable to locate package linux-headers-3.18.0-18720-g7b8c1dc67cda E: Couldn't find any package by glob 'linux-headers-3.18.0-18720-g7b8c1dc67cda' E: Couldn't find any package by regex 'linux-headers-3.18.0-18720-g7b8c1dc67cda'
When looking at how other people have done it and what their issues were, their kernal names were a lot smaller. I'm not sure if this is because I am using Linux on a Chromebook and that is making it difficult.
I am using Ubuntu 16.04 on top of ChromeOS (Crouton).
I'm using these steps on the Oracle website. It is at this point where I'm having issues with the first prerequisite stage for Ubuntu; the second line worked and I was able to complete steps after that except for building the driver since I don't have the Linux headers.