diff --git a/common/hw-gfx-gma.adb b/common/hw-gfx-gma.adb
index 1db493f..4a1050e 100644
--- a/common/hw-gfx-gma.adb
+++ b/common/hw-gfx-gma.adb
@@ -210,6 +210,10 @@
            ("Disabling port " & Port_Names (Pipe_Cfg.Port)));
          pragma Debug (Debug.New_Line);
 
+         if Pipe_Cfg.Framebuffer.Offset = VGA_PLANE_FRAMEBUFFER_OFFSET then
+            Display_Controller.Legacy_VGA_Off;
+         end if;
+
          Connectors.Pre_Off (Port_Cfg);
          Display_Controller.Off (Pipe);
          Connectors.Post_Off (Port_Cfg);