ubuntu 16.04 LTS $ sudo apt install virtualbox $ virtualbox VirtualBox: supR3HardenedMainGetTrustedMain: dlopen("/usr/lib/virtualbox/VirtualBox.so",) failed: /usr/lib/x86_64-linux-gnu/libQt5OpenGL.so.5: undefined symbol: _ZN6QDebug9putStringEPK5QCharm virtualbox is not run. What's wrong and how...