The following error occurs when running my virtual box 5.1 from terminal in Debian 8 and this error when I close virtualbox:
Qt WARNING: QObject::disconnect: No such signal QApplication::screenRemoved(QScreen *)
What should I do?
The "screenRemoved" is a singnal from "QGuiApplication".
And "QApplication" iherits "QGuiApplication".
It is all good. But this method is there from Qt5.4 version.
Please check your QT version. May be it is bit older.