onkyoqt - GUI for Onkyo receivers
sudo apt-get install python-pyqt5 pyqt5-dev-tools qttools5-dev-tools python-pip python git
sudo pip2 install onkyo-eiscp
git clone https://github.com/massdest/onkyoqtpy.git ; cd onkyoqtpy ; sudo python2 setup.py install
sudo pip2 install onkyoqt
/usr/local/bin/onkyoqt
or from application menu Multimedia
File->Settings->Receiver IP
Application start work about 30-60 seconds after receiver powered on, so be patient.