--- old/src/macosx/classes/sun/awt/CGraphicsDevice.java	2012-07-18 14:49:46.000000000 +0400
+++ new/src/macosx/classes/sun/awt/CGraphicsDevice.java	2012-07-18 14:49:45.000000000 +0400
@@ -48,6 +48,9 @@
 
     private static AWTPermission fullScreenExclusivePermission;
 
+    // Save/restore DisplayMode for the Full Screen mode
+    private DisplayMode originalMode;
+
     public CGraphicsDevice(int displayID) {
         this.displayID = displayID;
         configs = new GraphicsConfiguration[] {
@@ -124,18 +127,22 @@
         }
 
         boolean fsSupported = isFullScreenSupported();
+
         if (fsSupported && old != null) {
             // enter windowed mode (and restore original display mode)
             exitFullScreenExclusive(old);
-
-            // TODO: restore display mode
+            if (originalMode != null) {
+                setDisplayMode(originalMode);
+                originalMode = null;
+            }
         }
 
         super.setFullScreenWindow(w);
 
         if (fsSupported && w != null) {
-            // TODO: save current display mode
-
+            if (isDisplayChangeSupported()) {
+                originalMode = getDisplayMode();
+            }
             // enter fullscreen mode
             enterFullScreenExclusive(w);
         }
--- old/src/macosx/native/sun/awt/CGraphicsDevice.m	2012-07-18 14:49:47.000000000 +0400
+++ new/src/macosx/native/sun/awt/CGraphicsDevice.m	2012-07-18 14:49:47.000000000 +0400
@@ -68,6 +68,11 @@
             // One of the key parameters does not match
             continue;
         }
+
+        if (refrate == 0) { // REFRESH_RATE_UNKNOWN
+            return cRef;
+        }
+
         // Refresh rate might be 0 in display mode and we ask for specific display rate
         // but if we do not find exact match then 0 refresh rate might be just Ok
         if (CGDisplayModeGetRefreshRate(cRef) == refrate) {
@@ -165,7 +170,10 @@
                 }
             }
         }];
+    } else {
+        [JNFException raise:env as:kIllegalArgumentException reason:"Invalid display mode"];
     }
+    
     CFRelease(allModes);
     JNF_COCOA_EXIT(env);
 }