diff -U10 -rN v4l2ucp-2.0.2/src/mainWindow.cpp v4l2ucp-2.0.2.new/src/mainWindow.cpp
--- v4l2ucp-2.0.2/src/mainWindow.cpp	2010-01-23 14:52:12.000000000 +0000
+++ v4l2ucp-2.0.2.new/src/mainWindow.cpp	2012-11-22 19:32:56.389624284 +0000
@@ -256,25 +256,26 @@
             break;
         case V4L2_CTRL_TYPE_MENU:
             w = new V4L2MenuControl(fd, ctrl, parent);
             break;
         case V4L2_CTRL_TYPE_BUTTON:
             w = new V4L2ButtonControl(fd, ctrl, parent);
             break;
         case V4L2_CTRL_TYPE_INTEGER64:
         case V4L2_CTRL_TYPE_CTRL_CLASS:
         default:
+            w = new V4L2UnknownControl(fd, ctrl, parent);
             break;
     }
     
     if(!w) {
-        new QLabel("Unknown control", parent);
+        new QLabel("Failed control", parent);
         new QLabel(parent);
         new QLabel(parent);
         return;
     }
     
     layout->addWidget(w);
     if(ctrl.flags & V4L2_CTRL_FLAG_GRABBED) {
         w->setEnabled(false);
     }
 
diff -U10 -rN v4l2ucp-2.0.2/src/v4l2controls.cpp v4l2ucp-2.0.2.new/src/v4l2controls.cpp
--- v4l2ucp-2.0.2/src/v4l2controls.cpp	2009-11-11 19:23:24.000000000 +0000
+++ v4l2ucp-2.0.2.new/src/v4l2controls.cpp	2012-11-22 21:13:20.969726087 +0000
@@ -66,21 +66,21 @@
 	    setValue(c.value);
     }
     struct v4l2_queryctrl ctrl;
     ctrl.id = cid;
     if(v4l2_ioctl(fd, VIDIOC_QUERYCTRL, &ctrl) == -1) {
         QString msg;
 	msg.sprintf("Unable to get the status of %s\n%s", name,
 	            strerror(errno));
 	QMessageBox::warning(this, "Unable to get control status", msg, "OK");
     } else {
-        setEnabled(ctrl.flags == 0);
+        setEnabled((ctrl.flags & (V4L2_CTRL_FLAG_DISABLED|V4L2_CTRL_FLAG_READ_ONLY)) == 0);
     }
 }
 
 void V4L2Control::resetToDefault()
 {
     if(isEnabled()) {
         setValue(default_value);
         updateHardware();
     }
 }
@@ -231,36 +231,47 @@
 
 void V4L2MenuControl::menuActivated(int val)
 {
     setValue(val);
     updateHardware();
 }
 
 /*
  * V4L2ButtonControl
  */
+V4L2UnknownControl::V4L2UnknownControl
+    (int fd, const struct v4l2_queryctrl &ctrl, QWidget *parent) :
+    V4L2Control(fd, ctrl, parent)
+{
+    QLabel *l = new QLabel(parent);
+    this->layout.addWidget(l);
+}
+
+/*
+ * V4L2ButtonControl
+ */
 V4L2ButtonControl::V4L2ButtonControl
     (int fd, const struct v4l2_queryctrl &ctrl, QWidget *parent) :
     V4L2Control(fd, ctrl, parent)
 {
     QPushButton *pb = new QPushButton((const char *)ctrl.name, this);
     this->layout.addWidget(pb);
     QObject::connect( pb, SIGNAL(clicked()), this, SLOT(updateHardware()) );
 }
 
 void V4L2ButtonControl::updateStatus()
 {
     struct v4l2_queryctrl ctrl;
     ctrl.id = cid;
     if(v4l2_ioctl(fd, VIDIOC_QUERYCTRL, &ctrl) == -1) {
         QString msg;
 	msg.sprintf("Unable to get the status of %s\n%s", name,
 	            strerror(errno));
 	QMessageBox::warning(this, "Unable to get control status", msg, "OK");
     } else {
-        setEnabled(ctrl.flags == 0);
+        setEnabled((ctrl.flags & (V4L2_CTRL_FLAG_DISABLED|V4L2_CTRL_FLAG_READ_ONLY)) == 0);
     }
 }
 
 void V4L2ButtonControl::resetToDefault()
 {
 }
diff -U10 -rN v4l2ucp-2.0.2/src/v4l2controls.h v4l2ucp-2.0.2.new/src/v4l2controls.h
--- v4l2ucp-2.0.2/src/v4l2controls.h	2009-06-20 12:28:12.000000000 +0000
+++ v4l2ucp-2.0.2.new/src/v4l2controls.h	2012-11-22 19:31:35.517622918 +0000
@@ -41,20 +41,32 @@
 
 protected:
     V4L2Control(int fd, const struct v4l2_queryctrl &ctrl, QWidget *parent);
     int fd;
     int cid;
     int default_value;
     char name[32];
     QHBoxLayout layout;
 };
 
+
+class V4L2UnknownControl : public V4L2Control
+{
+    Q_OBJECT
+public:
+    V4L2UnknownControl(int fd, const struct v4l2_queryctrl &ctrl, QWidget *parent);
+
+public slots:
+    void setValue(int) {};
+    int getValue() { return 0; };
+};
+
 class V4L2IntegerControl : public V4L2Control
 {
     Q_OBJECT
 public:
     V4L2IntegerControl(int fd, const struct v4l2_queryctrl &ctrl, QWidget *parent);
 
 public slots:
     void setValue(int val);
 
 public: