--- old/src/java.desktop/unix/classes/sun/awt/X11/XToolkit.java	2017-08-15 12:14:01.520964383 -0700
+++ new/src/java.desktop/unix/classes/sun/awt/X11/XToolkit.java	2017-08-15 12:14:01.296964389 -0700
@@ -2174,7 +2174,6 @@
     /**
      * Returns one of XConstants: NotUseful, WhenMapped or Always.
      * If backing store is not available on at least one screen, or
-     * java2d uses DGA(which conflicts with backing store) on at least one screen,
      * or the string system property "sun.awt.backingStore" is neither "Always"
      * nor "WhenMapped", then the method returns XConstants.NotUseful.
      * Otherwise, if the system property "sun.awt.backingStore" is "WhenMapped",
@@ -2218,16 +2217,6 @@
                                      "WhenMapped" : "Always") );
         }
 
-        if (sun.java2d.x11.X11SurfaceData.isDgaAvailable()) {
-            backingStoreType = XConstants.NotUseful;
-
-            if (backingStoreLog.isLoggable(PlatformLogger.Level.CONFIG)) {
-                backingStoreLog.config("DGA is available, backingStore=NotUseful");
-            }
-
-            return;
-        }
-
         awtLock();
         try {
             int screenCount = XlibWrapper.ScreenCount(getDisplay());