Pyside global menu not works - pyside

Question

Why not work global menu in PySide? I'm developing a Qt app in Ubuntu 14.04 LTS and the global menu doesn't work with PySide binding. With PyQt4 it works fine with no problem.
Is it a bug?
With Pyside
from PySide import QtCore, QtGui
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName(_fromUtf8("MainWindow"))
MainWindow.resize(400, 300)
self.centralWidget = QtGui.QWidget(MainWindow)
self.centralWidget.setObjectName(_fromUtf8("centralWidget"))
MainWindow.setCentralWidget(self.centralWidget)
self.menuBar = QtGui.QMenuBar(MainWindow)
self.menuBar.setGeometry(QtCore.QRect(0, 0, 400, 25))
self.menuBar.setObjectName(_fromUtf8("menuBar"))
self.menuMenu = QtGui.QMenu(self.menuBar)
self.menuMenu.setObjectName(_fromUtf8("menuMenu"))
MainWindow.setMenuBar(self.menuBar)
self.mainToolBar = QtGui.QToolBar(MainWindow)
self.mainToolBar.setObjectName(_fromUtf8("mainToolBar"))
MainWindow.addToolBar(QtCore.Qt.TopToolBarArea, self.mainToolBar)
self.statusBar = QtGui.QStatusBar(MainWindow)
self.statusBar.setObjectName(_fromUtf8("statusBar"))
MainWindow.setStatusBar(self.statusBar)
self.actionAsd = QtGui.QAction(MainWindow)
self.actionAsd.setObjectName(_fromUtf8("actionAsd"))
self.actionAsd2 = QtGui.QAction(MainWindow)
self.actionAsd2.setObjectName(_fromUtf8("actionAsd2"))
self.menuMenu.addAction(self.actionAsd)
self.menuMenu.addAction(self.actionAsd2)
self.menuBar.addAction(self.menuMenu.menuAction())
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow", None))
self.menuMenu.setTitle(_translate("MainWindow", "Menu", None))
self.actionAsd.setText(_translate("MainWindow", "Asd", None))
self.actionAsd2.setText(_translate("MainWindow", "Asd2", None))
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
MainWindow = QtGui.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
With PyQt4
from PyQt4 import QtCore, QtGui
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName(_fromUtf8("MainWindow"))
MainWindow.resize(400, 300)
self.centralWidget = QtGui.QWidget(MainWindow)
self.centralWidget.setObjectName(_fromUtf8("centralWidget"))
MainWindow.setCentralWidget(self.centralWidget)
self.menuBar = QtGui.QMenuBar(MainWindow)
self.menuBar.setGeometry(QtCore.QRect(0, 0, 400, 25))
self.menuBar.setObjectName(_fromUtf8("menuBar"))
self.menuMenu = QtGui.QMenu(self.menuBar)
self.menuMenu.setObjectName(_fromUtf8("menuMenu"))
MainWindow.setMenuBar(self.menuBar)
self.mainToolBar = QtGui.QToolBar(MainWindow)
self.mainToolBar.setObjectName(_fromUtf8("mainToolBar"))
MainWindow.addToolBar(QtCore.Qt.TopToolBarArea, self.mainToolBar)
self.statusBar = QtGui.QStatusBar(MainWindow)
self.statusBar.setObjectName(_fromUtf8("statusBar"))
MainWindow.setStatusBar(self.statusBar)
self.actionAsd = QtGui.QAction(MainWindow)
self.actionAsd.setObjectName(_fromUtf8("actionAsd"))
self.actionAsd2 = QtGui.QAction(MainWindow)
self.actionAsd2.setObjectName(_fromUtf8("actionAsd2"))
self.menuMenu.addAction(self.actionAsd)
self.menuMenu.addAction(self.actionAsd2)
self.menuBar.addAction(self.menuMenu.menuAction())
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow", None))
self.menuMenu.setTitle(_translate("MainWindow", "Menu", None))
self.actionAsd.setText(_translate("MainWindow", "Asd", None))
self.actionAsd2.setText(_translate("MainWindow", "Asd2", None))
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
MainWindow = QtGui.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
Thanks!