diff --git a/hw/xfree86/common/xf86Mode.c b/hw/xfree86/common/xf86Mode.c
index fc905df..3b0bf0a 100644
--- a/hw/xfree86/common/xf86Mode.c
+++ b/hw/xfree86/common/xf86Mode.c
@@ -1571,7 +1571,39 @@ #define _VIRTUALX(x) ((((x) + scrp->xInc
 	virtX = virtualX;
 	virtY = virtualY;
 	scrp->virtualFrom = X_CONFIG;
-    } else if (!modeNames || !*modeNames) {
+    } 
+
+    if  ((modeNames == NULL) || (*modeNames == NULL)) {
+	    char *mode_pref = NULL;
+	    const int types[] = {
+            	M_T_BUILTIN | M_T_PREFERRED,
+            	M_T_USERDEF | M_T_PREFERRED,
+            	M_T_DRIVER | M_T_PREFERRED
+		};
+	    const int ntypes = sizeof(types) / sizeof(int);
+	    int n, type;
+	    DisplayModePtr modes = scrp->modePool ? scrp->modePool : availModes;
+
+	    for (n = 0; n < ntypes; n++) {
+	        type = types[n];
+		
+	    	for (p = modes;  p != NULL;  p = p->next) {
+	    	    if ((p->type & type) == type) {
+		    	mode_pref = strdup(p->name);
+		    	break;
+	    	    }
+	    	}
+	    	if (mode_pref)
+		    break;
+	    if (mode_pref) {
+	    	modeNames = xnfcalloc(2, sizeof(char *));
+	    	modeNames[0] = strdup(mode_pref);
+	    	modeNames[1] = NULL;
+	    }
+	}
+    }
+
+    if ((virtualY <= 0) && (!modeNames || !*modeNames)) {
 	/* No virtual size given in the config, try to infer */
 	/* XXX this doesn't take m{in,ax}Pitch into account; oh well */
 	inferred_virtual = inferVirtualSize(scrp, availModes, &virtX, &virtY);