diff --git a/src/bluetooth/qlowenergycontroller_bluez.cpp b/src/bluetooth/qlowenergycontroller_bluez.cpp
index 9435d479..38c50d78 100644
--- a/src/bluetooth/qlowenergycontroller_bluez.cpp
+++ b/src/bluetooth/qlowenergycontroller_bluez.cpp
@@ -3035,6 +3035,9 @@ void QLowEnergyControllerPrivate::handleConnectionRequest()
 
     closeServerSocket();
     l2cpSocket = new QBluetoothSocket(QBluetoothServiceInfo::L2capProtocol, this);
+
+    qCDebug(QT_BT_BLUEZ) << __FUNCTION__ << ":" << __LINE__ << "before setSocketDescriptor: " << l2cpSocket->socketDescriptor();
+
     connect(l2cpSocket, &QBluetoothSocket::disconnected,
             this, &QLowEnergyControllerPrivate::l2cpDisconnected);
     connect(l2cpSocket, static_cast<void (QBluetoothSocket::*)(QBluetoothSocket::SocketError)>
@@ -3047,6 +3050,8 @@ void QLowEnergyControllerPrivate::handleConnectionRequest()
     restoreClientConfigurations();
     loadSigningDataIfNecessary(RemoteSigningKey);
 
+    qCDebug(QT_BT_BLUEZ) << __FUNCTION__ << ":" << __LINE__ << "after setSocketDescriptor: " << l2cpSocket->socketDescriptor();
+
     Q_Q(QLowEnergyController);
     setState(QLowEnergyController::ConnectedState);
     emit q->connected();
@@ -3057,6 +3062,7 @@ void QLowEnergyControllerPrivate::closeServerSocket()
     if (!serverSocketNotifier)
         return;
     serverSocketNotifier->disconnect();
+    qCDebug(QT_BT_BLUEZ) << __FUNCTION__ << ":" << __LINE__ << "close socket: " << serverSocketNotifier->socket();
     close(serverSocketNotifier->socket());
     serverSocketNotifier->deleteLater();
     serverSocketNotifier = nullptr;