diff --git a/target/linux/cobalt/base-files/etc/diag.sh b/target/linux/cobalt/base-files/etc/diag.sh
new file mode 100644
index 0000000000..47e3eba5f7
--- /dev/null
+++ b/target/linux/cobalt/base-files/etc/diag.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+# Copyright (C) 2009 OpenWrt.org
+
+set_state() {
+        case "$1" in
+                preinit)
+                        [ -d /sys/class/leds/qube-front ] && {
+                                echo none > /sys/class/leds/qube-front/trigger
+                                echo 255 > /sys/class/leds/qube-front/brightness
+                        }
+                ;;
+                done)
+                        [ -d /sys/class/leds/qube-front ] && {
+				echo 0 > /sys/class/leds/qube-front/brightness
+                        }
+                ;;
+        esac
+}