[Qgis-developer] Error : cannot connect to X server on Ubuntu

devquestions2 at gmail.com devquestions2 at gmail.com
Tue Dec 9 05:16:25 PST 2014

I am seeing the error "cannot connect to X server" in a stand alone python
application at
"app = QgsApplication([], True)".

As suggested in the mailing archives I tried setting DISPLAY env variable to
"", but that does not resolve the problem. Would be a great help if you can
point me any references on the issue or have any suggestions on what i can

Os Ubuntu

code :

import os
import sys

#qgisprefix = '/usr'

from qgis.core import *

from qgis.gui import *

# configure QGIS paths
QgsApplication.setPrefixPath(qgisprefix, True)

# initalise QGIS

app = QgsApplication([], True) 

Thanks !

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