diff --git a/src/i830_lvds.c b/src/i830_lvds.c
index 4f64905..6aecea8 100644
--- a/src/i830_lvds.c
+++ b/src/i830_lvds.c
@@ -891,6 +891,27 @@ i830_lvds_detect(xf86OutputPtr output)
     return XF86OutputStatusConnected;
 }
 
+static void fill_detailed_block(struct detailed_monitor_section *det_mon,
+                                DisplayModePtr mode)
+{
+    struct detailed_timings *timing = &det_mon->section.d_timings;
+    det_mon->type = DT;
+    timing->clock = mode->Clock * 1000;
+    timing->h_active = mode->HDisplay;
+    timing->h_blanking = mode->HTotal - mode->HDisplay;
+    timing->v_active = mode->VDisplay;
+    timing->v_blanking = mode->VTotal - mode->VDisplay;
+    timing->h_sync_off = mode->HSyncStart - mode->HDisplay;
+    timing->h_sync_width = mode->HSyncEnd - mode->HSyncStart;
+    timing->v_sync_off = mode->VSyncStart - mode->VDisplay;
+    timing->v_sync_width = mode->VSyncEnd - mode->VSyncStart;
+
+    if (mode->Flags & V_PVSYNC)
+        timing->misc |= 0x02;
+    
+    if (mode->Flags & V_PHSYNC)
+        timing->misc |= 0x01;
+}
 /**
  * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
  */
@@ -945,22 +966,35 @@ i830_lvds_get_modes(xf86OutputPtr output)
 	edid_mon = xcalloc (1, sizeof (xf86Monitor));
 	if (edid_mon)
 	{
+	    /*support DPM, instead of DPMS*/
+            edid_mon->features.dpms |= 0x1;
+	    /*defaultly support RGB color display*/
+            edid_mon->features.display_type |= 0x1;
+	    /*defaultly display support continuous-freqencey*/
+            edid_mon->features.msc |= 0x1;
+
 	    /* Set wide sync ranges so we get all modes
 	     * handed to valid_mode for checking
 	     */
-	    edid_mon->det_mon[0].type = DS_RANGES;
-	    edid_mon->det_mon[0].section.ranges.min_v = 0;
-	    edid_mon->det_mon[0].section.ranges.max_v = 200;
-	    edid_mon->det_mon[0].section.ranges.min_h = 0;
-	    edid_mon->det_mon[0].section.ranges.max_h = 200;
+	    edid_mon->det_mon[1].type = DS_RANGES;
+	    edid_mon->det_mon[1].section.ranges.min_v = 0;
+	    edid_mon->det_mon[1].section.ranges.max_v = 200;
+	    edid_mon->det_mon[1].section.ranges.min_h = 0;
+	    edid_mon->det_mon[1].section.ranges.max_h = 200;
 	    
 	    output->MonInfo = edid_mon;
 	}
     }
 
-    if (pI830->lvds_fixed_mode != NULL)
-	return xf86DuplicateMode(pI830->lvds_fixed_mode);
-
+    if (pI830->lvds_fixed_mode != NULL) {
+        /*now we construct new EDID monitor, 
+         * so filled one detailed timing block
+         */
+        fill_detailed_block(edid_mon->det_mon, pI830->lvds_fixed_mode);
+        /*the filed timing block should be set preferred*/
+        edid_mon->features.msc |= 0x2;
+        return xf86DuplicateMode(pI830->lvds_fixed_mode);
+    }
     return NULL;
 }