How to use Ctrl-Mouse in ubuntu I use ubuntu16.04 for blender-2.79b. I have problems where I cannot use the Ctrl in combination with the Mouse action.
Examples are:


Ctrl-Scroll (scroll value)
Ctrl-Drag-LMB (cut node connections)


Ctrl-Keyboard, e.g. Ctrl-Z, works fine.

How can I resolve this?
I got this solved, in a kind of sad way.

The cause was that I had the mouse locator on. This over took the keyboard input of my Ctrl key.