--- a/chrome/browser/ui/libgtkui/gtk_ui.cc
+++ b/chrome/browser/ui/libgtkui/gtk_ui.cc
@@ -411,6 +411,10 @@
 }  // namespace
 
 Gtk2UI::Gtk2UI() : middle_click_action_(GetDefaultMiddleClickAction()) {
+#if GTK_MAJOR_VERSION > 2
+  g_setenv("GDK_SCALE", "1", FALSE);
+  gdk_set_allowed_backends("x11");
+#endif
   GtkInitFromCommandLine(*base::CommandLine::ForCurrentProcess());
 }