QXcbConnection: Could not connect to display, when trying to debug Linux app with Qt Creator

Question

I am trying to port a set of Windows applications that were built with Qt Creator to Linux. I have installed Qt Creator 4.0.2 based on Qt 5.7.0 in a 64-bit Ubuntu 16.04 virtual

Answer 1

Turns out that all I had to do was check the "Run in terminal:" check box in the "Start Debugger" dialog window.