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I want to develop a PyQGIS standalone script only using Ubuntu terminal, so to start I use:

from qgis.core import *
QgsApplication.setPrefixPath("/path/to/qgis/installation", True)
qgs = QgsApplication([], False)
qgs.initQgis()
qgs.exitQgis()

But it gives me the next error:

qt.qpa.screen: QXcbConnection: Could not connect to display
Could not connect to any X display.

I understand that the error is due cause I'm not using a graphic device (I'm working through Ubuntu's terminal and I can't use a graphic device), but the second argument on QgsApplication() disables the GUI so I thought a graphic device wouldn't be necessary.

What does that error mean? Does it have any solution?

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