This is a “How To” post on disabling the keyboard shortcut “ALT + Right Mouse Button” so that the keyboard shortcut can be use with software like 3D Blender, and some video games which need this keyboard shortcut. The issue, in Linux, is that this short cut is used system wide, as in my case, to resize the active window. I was quite amazed at how easy it is to disable the keyboard setting in Linux Mint 18, where there was no config file editing, or elaborate command scripting in Terminal, or installing more software, unlike what there was in Ubuntu. However, there is a word of caution, this method disables the “ALT” key for keyboard shortcuts. Here are three steps to disable the ALT + Right Click.
One: Go to “Menu” and choose your “System Setting Control Centre.”
Two: Choose “Windows” under the “Preferences” section.
Three: Click, the Window Behaviour tab, and choose the “<alt>” tab by the “Special Key to move and resize windows,” and switch it to “<super>.”
This screen now should look like this:
The change should take place right-a-way. Now run Blender, and you should be able select an edge, and select it with <alt> + <right click>.