diff --git a/platform/qt/dmxwidget/widgetmodel.cpp b/platform/qt/dmxwidget/widgetmodel.cpp
index 3fb6ff3..da8379f 100644
--- a/platform/qt/dmxwidget/widgetmodel.cpp
+++ b/platform/qt/dmxwidget/widgetmodel.cpp
@@ -8,6 +8,12 @@ WidgetModel::WidgetModel(QObject *parent)
 }
 
 
+WidgetModel::~WidgetModel() {
+  for(auto &wdgt: widgets_)
+      disconnect(wdgt.get(), nullptr, this, nullptr);
+}
+
+
 QVariant WidgetModel::headerData(int section, Qt::Orientation orientation, int role) const
 {
     if (role == Qt::DisplayRole && orientation == Qt::Horizontal) {
@@ -127,5 +133,10 @@ void WidgetModel::rescanPorts()
     beginInsertRows(QModelIndex(), widgets_.size(), widgets_.size()+newWidgets.size()-1);
     widgets_.append(newWidgets);
     endInsertRows();
+    for(auto &wdgt: newWidgets)
+      connect(wdgt.get(), &DmxWidget::connectedChanged, this, [this](){
+          // refresh the whole view.  Could be optimized by looking for this widget in the rows.
+          emit dataChanged(createIndex(0,0), createIndex(rowCount(),columnCount()));
+      });
   }
 }
diff --git a/platform/qt/dmxwidget/widgetmodel.h b/platform/qt/dmxwidget/widgetmodel.h
index 0d0a8fb..d85fe28 100644
--- a/platform/qt/dmxwidget/widgetmodel.h
+++ b/platform/qt/dmxwidget/widgetmodel.h
@@ -9,6 +9,7 @@ class WidgetModel : public QAbstractItemModel
 
 public:
     explicit WidgetModel(QObject *parent = nullptr);
+    virtual ~WidgetModel();
 
     // Header:
     QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override;