diff --git a/tools/cabana/dbc/dbc.h b/tools/cabana/dbc/dbc.h
index be0057cf56..045eb3558d 100644
--- a/tools/cabana/dbc/dbc.h
+++ b/tools/cabana/dbc/dbc.h
@@ -61,6 +61,7 @@ namespace cabana {
   };
 
   struct Msg {
+    uint32_t address;
     QString name;
     uint32_t size;
     QList<cabana::Signal> sigs;
diff --git a/tools/cabana/dbc/dbcfile.cc b/tools/cabana/dbc/dbcfile.cc
index 9173080796..f1a01c4079 100644
--- a/tools/cabana/dbc/dbcfile.cc
+++ b/tools/cabana/dbc/dbcfile.cc
@@ -39,6 +39,7 @@ void DBCFile::open(const QString &content) {
   msgs.clear();
   for (auto &msg : dbc->msgs) {
     auto &m = msgs[msg.address];
+    m.address = msg.address;
     m.name = msg.name.c_str();
     m.size = msg.size;
     for (auto &s : msg.sigs) {
@@ -145,6 +146,7 @@ void DBCFile::removeSignal(const MessageId &id, const QString &sig_name) {
 
 void DBCFile::updateMsg(const MessageId &id, const QString &name, uint32_t size) {
   auto &m = msgs[id.address];
+  m.address = id.address;
   m.name = name;
   m.size = size;
 }
diff --git a/tools/cabana/dbc/dbcmanager.cc b/tools/cabana/dbc/dbcmanager.cc
index 2451ff9b00..9667dd8f2a 100644
--- a/tools/cabana/dbc/dbcmanager.cc
+++ b/tools/cabana/dbc/dbcmanager.cc
@@ -119,6 +119,7 @@ void DBCManager::addSignal(const MessageId &id, const cabana::Signal &sig) {
   cabana::Signal *s = dbc_file->addSignal(id, sig);
 
   if (s != nullptr) {
+    dbc_sources.insert(id.source);
     for (uint8_t source : dbc_sources) {
       emit signalAdded({.source = source, .address = id.address}, s);
     }
diff --git a/tools/cabana/dbc/dbcmanager.h b/tools/cabana/dbc/dbcmanager.h
index 3b148bb61d..699c280b4c 100644
--- a/tools/cabana/dbc/dbcmanager.h
+++ b/tools/cabana/dbc/dbcmanager.h
@@ -15,6 +15,7 @@
 
 typedef QSet<uint8_t> SourceSet;
 const SourceSet SOURCE_ALL = {};
+const int INVALID_SOURCE = 0xff;
 
 class DBCManager : public QObject {
   Q_OBJECT
diff --git a/tools/cabana/detailwidget.cc b/tools/cabana/detailwidget.cc
index a9bbf15980..0feb4642f4 100644
--- a/tools/cabana/detailwidget.cc
+++ b/tools/cabana/detailwidget.cc
@@ -129,7 +129,9 @@ void DetailWidget::refresh() {
   QStringList warnings;
   auto msg = dbc()->msg(msg_id);
   if (msg) {
-    if (msg->size != can->lastMessage(msg_id).dat.size()) {
+    if (msg_id.source == INVALID_SOURCE) {
+      warnings.push_back(tr("No messages received."));
+    } else if (msg->size != can->lastMessage(msg_id).dat.size()) {
       warnings.push_back(tr("Message size (%1) is incorrect.").arg(msg->size));
     }
     for (auto s : binary_view->getOverlappingSignals()) {
diff --git a/tools/cabana/messageswidget.cc b/tools/cabana/messageswidget.cc
index 1d86a53ad1..d42468f188 100644
--- a/tools/cabana/messageswidget.cc
+++ b/tools/cabana/messageswidget.cc
@@ -15,10 +15,11 @@ MessagesWidget::MessagesWidget(QWidget *parent) : QWidget(parent) {
   title_layout->addWidget(num_msg_label);
 
   title_layout->addStretch();
-  title_layout->addWidget(multiple_lines_bytes = new QCheckBox(tr("Multiple Lines Bytes"), this));
+  title_layout->addWidget(multiple_lines_bytes = new QCheckBox(tr("Multiple Lines &Bytes"), this));
   multiple_lines_bytes->setToolTip(tr("Display bytes in multiple lines"));
   multiple_lines_bytes->setChecked(settings.multiple_lines_bytes);
-  QPushButton *clear_filters = new QPushButton(tr("Clear Filters"));
+  QPushButton *clear_filters = new QPushButton(tr("&Clear Filters"));
+  clear_filters->setEnabled(false);
   title_layout->addWidget(clear_filters);
   main_layout->addLayout(title_layout);
 
@@ -42,6 +43,7 @@ MessagesWidget::MessagesWidget(QWidget *parent) : QWidget(parent) {
   // Must be called before setting any header parameters to avoid overriding
   restoreHeaderState(settings.message_header_state);
   view->header()->setSectionsMovable(true);
+  view->header()->setSectionResizeMode(MessageListModel::Column::DATA, QHeaderView::Fixed);
 
   // Header context menu
   view->header()->setContextMenuPolicy(Qt::CustomContextMenu);
@@ -62,6 +64,9 @@ MessagesWidget::MessagesWidget(QWidget *parent) : QWidget(parent) {
 
   // signals/slots
   QObject::connect(header, &MessageViewHeader::filtersUpdated, model, &MessageListModel::setFilterStrings);
+  QObject::connect(header, &MessageViewHeader::filtersUpdated, [=](const QMap<int, QString> &filters) {
+    clear_filters->setEnabled(!filters.isEmpty());
+  });
   QObject::connect(view->horizontalScrollBar(), &QScrollBar::valueChanged, header, &MessageViewHeader::updateHeaderPositions);
   QObject::connect(clear_filters, &QPushButton::clicked, header, &MessageViewHeader::clearFilters);
   QObject::connect(multiple_lines_bytes, &QCheckBox::stateChanged, [=](int state) {
@@ -108,7 +113,6 @@ MessagesWidget::MessagesWidget(QWidget *parent) : QWidget(parent) {
   });
 
   updateSuppressedButtons();
-  dbcModified();
 
   setWhatsThis(tr(R"(
     <b>Message View</b><br/>
@@ -122,12 +126,13 @@ MessagesWidget::MessagesWidget(QWidget *parent) : QWidget(parent) {
 
 void MessagesWidget::dbcModified() {
   num_msg_label->setText(tr("%1 Messages, %2 Signals").arg(dbc()->msgCount()).arg(dbc()->signalCount()));
-  model->fetchData();
+  model->dbcModified();
 }
 
 void MessagesWidget::selectMessage(const MessageId &msg_id) {
-  if (int row = model->msgs.indexOf(msg_id); row != -1) {
-    view->selectionModel()->setCurrentIndex(model->index(row, 0), QItemSelectionModel::Rows | QItemSelectionModel::ClearAndSelect);
+  auto it = std::find(model->msgs.cbegin(), model->msgs.cend(), msg_id);
+  if (it != model->msgs.cend()) {
+    view->selectionModel()->setCurrentIndex(model->index(std::distance(model->msgs.cbegin(), it), 0), QItemSelectionModel::Rows | QItemSelectionModel::ClearAndSelect);
   }
 }
 
@@ -180,11 +185,11 @@ QVariant MessageListModel::data(const QModelIndex &index, int role) const {
   if (role == Qt::DisplayRole) {
     switch (index.column()) {
       case Column::NAME: return msgName(id);
-      case Column::SOURCE: return id.source;
+      case Column::SOURCE: return id.source != INVALID_SOURCE ? QString::number(id.source) : "N/A" ;
       case Column::ADDRESS: return QString::number(id.address, 16);
-      case Column::FREQ: return getFreq(can_data);
-      case Column::COUNT: return can_data.count;
-      case Column::DATA: return toHex(can_data.dat);
+      case Column::FREQ: return id.source != INVALID_SOURCE ? getFreq(can_data) : "N/A";
+      case Column::COUNT: return id.source != INVALID_SOURCE ? QString::number(can_data.count) : "N/A";
+      case Column::DATA: return id.source != INVALID_SOURCE ? toHex(can_data.dat) : "N/A";
     }
   } else if (role == ColorsRole) {
     QVector<QColor> colors = can_data.colors;
@@ -196,7 +201,7 @@ QVariant MessageListModel::data(const QModelIndex &index, int role) const {
       }
     }
     return QVariant::fromValue(colors);
-  } else if (role == BytesRole && index.column() == Column::DATA) {
+  } else if (role == BytesRole && index.column() == Column::DATA && id.source != INVALID_SOURCE) {
     return can_data.dat;
   }
   return {};
@@ -207,7 +212,15 @@ void MessageListModel::setFilterStrings(const QMap<int, QString> &filters) {
   fetchData();
 }
 
-void MessageListModel::sortMessages(Qt::SortOrder sort_order, int sort_column, QList<MessageId> &new_msgs) {
+void MessageListModel::dbcModified() {
+  dbc_address.clear();
+  for (const auto &[_, m] : dbc()->getMessages(0)) {
+    dbc_address.insert(m.address);
+  }
+  fetchData();
+}
+
+void MessageListModel::sortMessages(std::vector<MessageId> &new_msgs) {
   if (sort_column == Column::NAME) {
     std::sort(new_msgs.begin(), new_msgs.end(), [=](auto &l, auto &r) {
       auto ll = std::pair{msgName(l), l};
@@ -241,7 +254,7 @@ void MessageListModel::sortMessages(Qt::SortOrder sort_order, int sort_column, Q
   }
 }
 
-static std::pair<unsigned int, unsigned int> parseRange(QString &filter, bool *ok = nullptr, int base = 10) {
+static std::pair<unsigned int, unsigned int> parseRange(const QString &filter, bool *ok = nullptr, int base = 10) {
   // Parse out filter string into a range (e.g. "1" -> {1, 1}, "1-3" -> {1, 3}, "1-" -> {1, inf})
   bool ok1 = true, ok2 = true;
   unsigned int parsed1 = std::numeric_limits<unsigned int>::min();
@@ -263,14 +276,14 @@ static std::pair<unsigned int, unsigned int> parseRange(QString &filter, bool *o
   }
 }
 
-bool MessageListModel::matchMessage(const MessageId &id, const CanData &data, QMap<int, QString> &filters) {
+bool MessageListModel::matchMessage(const MessageId &id, const CanData &data, const QMap<int, QString> &filters) {
   auto cs = Qt::CaseInsensitive;
   bool match = true;
   bool convert_ok;
 
   for (int column = Column::NAME; column <= Column::DATA; column++) {
     if (!filters.contains(column)) continue;
-    QString txt = filters[column];
+    const QString &txt = filters[column];
 
     QRegularExpression re(txt, QRegularExpression::CaseInsensitiveOption | QRegularExpression::DotMatchesEverythingOption);
 
@@ -341,25 +354,38 @@ bool MessageListModel::matchMessage(const MessageId &id, const CanData &data, QM
 
 
 void MessageListModel::fetchData() {
-  QList<MessageId> new_msgs;
-  for (auto it = can->last_msgs.begin(); it != can->last_msgs.end(); ++it) {
-    if (matchMessage(it.key(), it.value(), filter_str)) {
+  std::vector<MessageId> new_msgs;
+  new_msgs.reserve(can->last_msgs.size() + dbc_address.size());
+
+  auto address = dbc_address;
+  for (auto it = can->last_msgs.cbegin(); it != can->last_msgs.cend(); ++it) {
+    if (filter_str.isEmpty() || matchMessage(it.key(), it.value(), filter_str)) {
       new_msgs.push_back(it.key());
     }
+    address.remove(it.key().address);
+  }
+
+  // merge all DBC messages
+  for (auto &addr : address) {
+    MessageId id{.source = INVALID_SOURCE, .address = addr};
+    if (filter_str.isEmpty() || matchMessage(id, {}, filter_str)) {
+      new_msgs.push_back(id);
+    }
   }
-  sortMessages(sort_order, sort_column, new_msgs);
+
+  sortMessages(new_msgs);
 
   if (msgs != new_msgs) {
     beginResetModel();
-    msgs = new_msgs;
+    msgs = std::move(new_msgs);
     endResetModel();
   }
 }
 
-void MessageListModel::msgsReceived(const QHash<MessageId, CanData> *new_msgs) {
-  QList<MessageId> prev_msgs = msgs;
-  fetchData();
-
+void MessageListModel::msgsReceived(const QHash<MessageId, CanData> *new_msgs, bool has_new_ids) {
+  if (has_new_ids || filter_str.contains(Column::FREQ) || filter_str.contains(Column::COUNT) || filter_str.contains(Column::DATA)) {
+    fetchData();
+  }
   for (int i = 0; i < msgs.size(); ++i) {
     if (new_msgs->contains(msgs[i])) {
       for (int col = Column::FREQ; col < columnCount(); ++col)
diff --git a/tools/cabana/messageswidget.h b/tools/cabana/messageswidget.h
index c559467919..036758e636 100644
--- a/tools/cabana/messageswidget.h
+++ b/tools/cabana/messageswidget.h
@@ -34,20 +34,22 @@ public:
   int rowCount(const QModelIndex &parent = QModelIndex()) const override { return msgs.size(); }
   void sort(int column, Qt::SortOrder order = Qt::AscendingOrder) override;
   void setFilterStrings(const QMap<int, QString> &filters);
-  void msgsReceived(const QHash<MessageId, CanData> *new_msgs = nullptr);
+  void msgsReceived(const QHash<MessageId, CanData> *new_msgs, bool has_new_ids);
   void fetchData();
   void suppress();
   void clearSuppress();
   void reset();
   void forceResetModel();
-  QList<MessageId> msgs;
+  void dbcModified();
+  std::vector<MessageId> msgs;
   QSet<std::pair<MessageId, int>> suppressed_bytes;
 
 private:
-  static void sortMessages(Qt::SortOrder sort_order, int sort_column, QList<MessageId> &new_msgs);
-  static bool matchMessage(const MessageId &id, const CanData &data, QMap<int, QString> &filters);
+  void sortMessages(std::vector<MessageId> &new_msgs);
+  bool matchMessage(const MessageId &id, const CanData &data, const QMap<int, QString> &filters);
 
   QMap<int, QString> filter_str;
+  QSet<uint32_t> dbc_address;
   int sort_column = 0;
   Qt::SortOrder sort_order = Qt::AscendingOrder;
 };
diff --git a/tools/cabana/signalview.cc b/tools/cabana/signalview.cc
index 84043f7a1f..124f9f6b9a 100644
--- a/tools/cabana/signalview.cc
+++ b/tools/cabana/signalview.cc
@@ -590,9 +590,9 @@ void SignalView::handleSignalUpdated(const cabana::Signal *sig) {
 }
 
 void SignalView::updateState(const QHash<MessageId, CanData> *msgs) {
-  if (model->rowCount() == 0 || (msgs && !msgs->contains(model->msg_id))) return;
-
   const auto &last_msg = can->lastMessage(model->msg_id);
+  if (model->rowCount() == 0 || (msgs && !msgs->contains(model->msg_id)) || last_msg.dat.size() == 0) return;
+
   for (auto item : model->root->children) {
     double value = get_raw_value((uint8_t *)last_msg.dat.constData(), last_msg.dat.size(), *item->sig);
     item->sig_val = item->sig->formatValue(value);
diff --git a/tools/cabana/streams/abstractstream.cc b/tools/cabana/streams/abstractstream.cc
index 3451c15291..355e65b6c5 100644
--- a/tools/cabana/streams/abstractstream.cc
+++ b/tools/cabana/streams/abstractstream.cc
@@ -12,6 +12,7 @@ AbstractStream::AbstractStream(QObject *parent) : QObject(parent) {
 
 void AbstractStream::updateMessages(QHash<MessageId, CanData> *messages) {
   auto prev_src_size = sources.size();
+  auto prev_msg_size = last_msgs.size();
   for (auto it = messages->begin(); it != messages->end(); ++it) {
     const auto &id = it.key();
     last_msgs[id] = it.value();
@@ -21,7 +22,7 @@ void AbstractStream::updateMessages(QHash<MessageId, CanData> *messages) {
     emit sourcesUpdated(sources);
   }
   emit updated();
-  emit msgsReceived(messages);
+  emit msgsReceived(messages, prev_msg_size != last_msgs.size());
   delete messages;
   processing = false;
 }
@@ -50,6 +51,12 @@ bool AbstractStream::postEvents() {
   return false;
 }
 
+const std::vector<const CanEvent *> &AbstractStream::events(const MessageId &id) const {
+  static std::vector<const CanEvent *> empty_events;
+  auto it = events_.find(id);
+  return it != events_.end() ? it->second : empty_events;
+}
+
 const CanData &AbstractStream::lastMessage(const MessageId &id) {
   static CanData empty_data = {};
   auto it = last_msgs.find(id);
@@ -81,7 +88,7 @@ void AbstractStream::updateLastMsgsTo(double sec) {
   // use a timer to prevent recursive calls
   QTimer::singleShot(0, [this]() {
     emit updated();
-    emit msgsReceived(&last_msgs);
+    emit msgsReceived(&last_msgs, true);
   });
 }
 
diff --git a/tools/cabana/streams/abstractstream.h b/tools/cabana/streams/abstractstream.h
index 80c11d2f19..9b317b3ed6 100644
--- a/tools/cabana/streams/abstractstream.h
+++ b/tools/cabana/streams/abstractstream.h
@@ -55,7 +55,7 @@ public:
   virtual bool isPaused() const { return false; }
   virtual void pause(bool pause) {}
   const std::vector<const CanEvent *> &allEvents() const { return all_events_; }
-  const std::vector<const CanEvent *> &events(const MessageId &id) const { return events_.at(id); }
+  const std::vector<const CanEvent *> &events(const MessageId &id) const;
   virtual const std::vector<std::tuple<int, int, TimelineType>> getTimeline() { return {}; }
 
 signals:
@@ -65,7 +65,7 @@ signals:
   void streamStarted();
   void eventsMerged();
   void updated();
-  void msgsReceived(const QHash<MessageId, CanData> *);
+  void msgsReceived(const QHash<MessageId, CanData> *new_msgs, bool has_new_ids);
   void sourcesUpdated(const SourceSet &s);
 
 public: