diff -urw a/xfsettingsd/displays.c b/xfsettingsd/displays.c
--- a/xfsettingsd/displays.c	2013-09-23 19:47:03.000000000 +0200
+++ b/xfsettingsd/displays.c	2014-01-31 17:42:11.887856974 +0100
@@ -565,6 +565,7 @@
     Rotation     rot;
     gint         x, y, n, m, int_value;
     gboolean     active;
+    int          width, height;
 
     g_assert (XFCE_IS_DISPLAYS_HELPER (helper) && helper->resources && output);
 
@@ -671,6 +672,7 @@
         str_value = "";
     else
         str_value = g_value_get_string (value);
+    sscanf(str_value, "%dx%d", &width, &height);
 
     /* refresh rate */
     g_snprintf (property, sizeof (property), RRATE_PROP, scheme, output->info->name);
@@ -696,8 +698,9 @@
                     ((gdouble) helper->resources->modes[m].hTotal * (gdouble) helper->resources->modes[m].vTotal);
 
             /* find the mode corresponding to the saved values */
-            if (rint (rate) == rint (output_rate)
-                && (g_strcmp0 (helper->resources->modes[m].name, str_value) == 0))
+            if (rint (rate * 10) == rint (output_rate * 10)
+                && helper->resources->modes[m].width == width
+                && helper->resources->modes[m].height == height)
             {
                 valid_mode = helper->resources->modes[m].id;
                 break;