diff --git a/js/x11/core/ext/dpms.js b/js/x11/core/ext/dpms.js
new file mode 100644
index 0000000..d131d57
--- /dev/null
+++ b/js/x11/core/ext/dpms.js
@@ -0,0 +1,100 @@
+// http://www.x.org/releases/X11R7.6/doc/xextproto/dpms.txt
+
+var x11 = Require('x11/core/x11');
+// TODO: move to templates
+exports.requireExt = function(display, callback)
+{
+    var X = display.client;
+    X.QueryExtension('DPMS', function(err, ext) {
+
+        if (!ext.present)
+            return callback(new Error('extension not available'));
+
+        ext.GetVersion = function(clientMaj, clientMin, callback)
+        {
+            X.seq_num++;
+            X.pack_stream.pack('CCSSS', [ext.majorOpcode, 0, 2, clientMaj, clientMin]);
+            X.replies[X.seq_num] = [
+                function(buf, opt) {
+                    var res = buf.unpack('SS');
+                    return res;
+                },
+                callback
+            ];
+            X.pack_stream.flush();
+        };
+
+        ext.Capable = function(callback)
+        {
+            X.seq_num++;
+            X.pack_stream.pack('CCS', [ext.majorOpcode, 1, 1]);
+            X.replies[X.seq_num] = [
+                function(buf, opt) {
+                    var res = buf.unpack('C');
+                    return res;
+                },
+                callback
+            ];
+            X.pack_stream.flush();
+        };
+
+        ext.GetTimeouts = function(callback)
+        {
+            X.seq_num++;
+            X.pack_stream.pack('CCS', [ext.majorOpcode, 2, 1]);
+            X.replies[X.seq_num] = [
+                function(buf, opt) {
+                    var res = buf.unpack('SSS');
+                    return res;
+                },
+                callback
+            ];
+            X.pack_stream.flush();
+        };
+
+        ext.SetTimeouts = function(standby_t, suspend_t, off_t)
+        {
+            X.seq_num++;
+            X.pack_stream.pack('CCSSSSxx', [ext.majorOpcode, 3, 3, standby_t, suspend_t, off_t]);
+            X.pack_stream.flush();
+        };
+
+        ext.Enable = function()
+        {
+            X.seq_num++;
+            X.pack_stream.pack('CCS', [ext.majorOpcode, 4, 1]);
+            X.pack_stream.flush();
+        };
+
+        ext.Disable = function()
+        {
+            X.seq_num++;
+            X.pack_stream.pack('CCS', [ext.majorOpcode, 5, 1]);
+            X.pack_stream.flush();
+        };
+
+        ext.ForceLevel = function(level) // 0 : On, 1 : Standby, 2 : Suspend, 3 : Off
+        {
+            X.seq_num++;
+            X.pack_stream.pack('CCSSxx', [ext.majorOpcode, 6, 2, level]);
+            X.pack_stream.flush();
+        };
+
+        ext.Info = function(callback)
+        {
+            X.seq_num++;
+            X.pack_stream.pack('CCS', [ext.majorOpcode, 7, 1]);
+            X.replies[X.seq_num] = [
+                function(buf, opt) {
+                    var res = buf.unpack('SC');
+                    return res;
+                },
+                callback
+            ];
+            X.pack_stream.flush();
+        };
+
+        callback(null, ext);
+    });
+};
+