QLowEnergyController::connectionUpdated never get emitted

[Salah_dex]

Hi i'm working on Qt/C++ based application on linux machine, to communicate with ContourNextOne device( gluecose metter), the specification indicate the connection parameters, so i had to change the controller connection parameters using :

m_connectionParameters.setIntervalRange(50,70);
m_connectionParameters.setLatency(0);
m_connectionParameters.setSupervisionTimeout(150);

and once connected:

m_connectedToDevice=true;
qDebug()<<"connected !";

m_deviceController->requestConnectionUpdate(m_connectionParameters);

after that nothing happens the signal connectionUpdated never get emitted