diff --git a/src/plugins/debugger/cdb/cdbengine.cpp b/src/plugins/debugger/cdb/cdbengine.cpp
index 587400f5eb5..b2489facf1e 100644
--- a/src/plugins/debugger/cdb/cdbengine.cpp
+++ b/src/plugins/debugger/cdb/cdbengine.cpp
@@ -346,7 +346,9 @@ CdbEngine::CdbEngine(const DebuggerStartParameters &sp) :
     m_currentBuiltinCommandIndex(-1),
     m_extensionCommandPrefixBA("!" QT_CREATOR_CDB_EXT "."),
     m_operateByInstructionPending(true),
+    m_verboseLogPending(true),
     m_operateByInstruction(true), // Default CDB setting
+    m_verboseLog(false), // Default CDB setting
     m_notifyEngineShutdownOnTermination(false),
     m_hasDebuggee(false),
     m_cdbIs64Bit(false),
@@ -359,7 +361,8 @@ CdbEngine::CdbEngine(const DebuggerStartParameters &sp) :
 {
     connect(debuggerCore()->action(OperateByInstruction), SIGNAL(triggered(bool)),
             this, SLOT(operateByInstructionTriggered(bool)));
-
+    connect(debuggerCore()->action(VerboseLog), SIGNAL(triggered(bool)),
+            this, SLOT(verboseLogTriggered(bool)));
     setObjectName(QLatin1String("CdbEngine"));
     connect(&m_process, SIGNAL(finished(int)), this, SLOT(processFinished()));
     connect(&m_process, SIGNAL(error(QProcess::ProcessError)), this, SLOT(processError()));
@@ -376,7 +379,9 @@ void CdbEngine::init()
     m_nextCommandToken  = 0;
     m_currentBuiltinCommandIndex = -1;
     m_operateByInstructionPending = debuggerCore()->action(OperateByInstruction)->isChecked();
+    m_verboseLogPending = debuggerCore()->boolSetting(VerboseLog);
     m_operateByInstruction = true; // Default CDB setting
+    m_verboseLog = false; // Default CDB setting
     m_notifyEngineShutdownOnTermination = false;
     m_hasDebuggee = false;
     m_sourceStepInto = false;
@@ -423,6 +428,13 @@ void CdbEngine::operateByInstructionTriggered(bool operateByInstruction)
         syncOperateByInstruction(operateByInstruction);
 }
 
+void CdbEngine::verboseLogTriggered(bool verboseLog)
+{
+    m_verboseLogPending = verboseLog;
+    if (state() == InferiorStopOk)
+        syncVerboseLog(verboseLog);
+}
+
 void CdbEngine::syncOperateByInstruction(bool operateByInstruction)
 {
     if (debug)
@@ -435,6 +447,15 @@ void CdbEngine::syncOperateByInstruction(bool operateByInstruction)
     postCommand(m_operateByInstruction ? QByteArray("l-s") : QByteArray("l+s"), 0);
 }
 
+void CdbEngine::syncVerboseLog(bool verboseLog)
+{
+    if (m_verboseLog == verboseLog)
+        return;
+    QTC_ASSERT(m_accessible, return);
+    m_verboseLog = verboseLog;
+    postCommand(m_verboseLog ? QByteArray("!sym noisy") : QByteArray("!sym quiet"), 0);
+}
+
 bool CdbEngine::setToolTipExpression(const QPoint &mousePos,
                                      TextEditor::ITextEditor *editor,
                                      const DebuggerToolTipContext &contextIn)
@@ -2120,6 +2141,8 @@ void CdbEngine::handleSessionIdle(const QByteArray &messageBA)
                elapsedLogTime(), messageBA.constData(),
                stateName(state()), m_specialStopMode);
 
+    syncVerboseLog(m_verboseLogPending);
+
     // Switch source level debugging
     syncOperateByInstruction(m_operateByInstructionPending);
 
diff --git a/src/plugins/debugger/cdb/cdbengine.h b/src/plugins/debugger/cdb/cdbengine.h
index 4478af3c3b1..48af1aa464c 100644
--- a/src/plugins/debugger/cdb/cdbengine.h
+++ b/src/plugins/debugger/cdb/cdbengine.h
@@ -148,6 +148,7 @@ private slots:
 
     void postCommandSequence(unsigned mask);
     void operateByInstructionTriggered(bool);
+    void verboseLogTriggered(bool);
 
     void consoleStubError(const QString &);
     void consoleStubProcessStarted();
@@ -199,6 +200,7 @@ private:
     inline bool isCdbProcessRunning() const { return m_process.state() != QProcess::NotRunning; }
     bool canInterruptInferior() const;
     void syncOperateByInstruction(bool operateByInstruction);
+    void syncVerboseLog(bool verboseLog);
     void postWidgetAtCommand();
     void handleCustomSpecialStop(const QVariant &v);
     void postFetchMemory(const MemoryViewCookie &c);
@@ -260,6 +262,8 @@ private:
     const QByteArray m_extensionCommandPrefixBA; //!< Library name used as prefix
     bool m_operateByInstructionPending; //!< Creator operate by instruction action changed.
     bool m_operateByInstruction;
+    bool m_verboseLogPending; //!< Creator verbose log action changed.
+    bool m_verboseLog;
     bool m_notifyEngineShutdownOnTermination;
     bool m_hasDebuggee;
     bool m_cdbIs64Bit;