--- webkitgtk-2.52.5/Source/WebKit/UIProcess/gtk/AcceleratedBackingStore.cpp.~2~
+++ webkitgtk-2.52.5/Source/WebKit/UIProcess/gtk/AcceleratedBackingStore.cpp
@@ -85,6 +85,12 @@
     static OptionSet<RendererBufferTransportMode> mode;
     static std::once_flag onceFlag;
     std::call_once(onceFlag, [] {
+
+// do not attempt to use EGL/DMABUF support. 
+#ifdef __sun__
+    return;
+#endif
+
         const char* disableDMABuf = getenv("WEBKIT_DISABLE_DMABUF_RENDERER");
         if (disableDMABuf && g_strcmp0(disableDMABuf, "0"))
             return;