Improve factory screen brightness

chromeos_startup

 #!/bin/sh
 
 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # The kernel mounts /proc and /sys during initialization, prior
 # to starting init.
 
 # Mount /tmp first, so that bootstat can record output right away.
@@ skipping 56 matching lines @@
   if [ -x "$FIRMWARE_UPDATE_SCRIPT" ]; then
     "$FIRMWARE_UPDATE_SCRIPT"
   fi
 fi
 
 # Check if the stateful partition has requested self-destruction
 # This is used for the factory install process
 RESET_FILE="/mnt/stateful_partition/factory_install_reset"
 if [ -f "$RESET_FILE" ]; then
   if [ $(stat -c%u "$RESET_FILE") -eq 0 ]; then
+    # Light up screen in case you can't see our splash image.
+    LIGHTUP_SCREEN=/usr/sbin/lightup_screen
+    if [ -x ${LIGHTUP_SCREEN} ]; then
+      ${LIGHTUP_SCREEN}
+    else
+      echo "${LIGHTUP_SCREEN} does not exist or not executable"
+    fi
+
     echo "Erasing stateful partition..."
     # Show a splash image to inform OPs it is wiping the disk.
     if [ -x /usr/bin/ply-image ]; then
       echo 0 > /sys/devices/virtual/graphics/fbcon/cursor_blink
       cp -f /mnt/stateful_partition/wipe_splash.png /tmp/
       /usr/bin/ply-image /tmp/wipe_splash.png &
     fi
     FAST=$(cat $RESET_FILE)
     if [ "$FAST" = "fast" ]; then
       exec /sbin/clobber-state fast
@@ skipping 85 matching lines @@
 #
 ureadahead &
 
 # Some things freak out if no hostname is set.
 hostname localhost
 
 bootstat post-startup
 
 # Always return success to avoid killing init
 exit 0