Dell Inspiron 640m: Power LCD on when lid is opened

Author: Daniel Drake <dsd@gentoo.org>

--- DSDT.dsl.orig	2007-05-06 13:19:59.000000000 -0400
+++ DSDT.dsl	2007-05-06 13:19:59.000000000 -0400
@@ -448,6 +448,16 @@ DefinitionBlock ("DSDT.aml", "DSDT", 1, 
 
     Method (LIDE, 0, NotSerialized)
     {
+        // If lid open, enable video
+        If (LNotEqual(\_SB.LID._LID(), 0)) {
+            \_SB.PCI0.VID.LCD._DSS(0x80000001)
+            Notify (\_SB.LID, 0x80)
+            Return
+        }
+
+        // If lid closed, continue
+
+        // The following Store turns the LCD off
         Store (SMI (0x43, 0x00), Local0)
         If (LAnd (LNotEqual (Local0, 0x00), LNotEqual (Local0, 0x0F)))
         {
@@ -474,6 +484,7 @@ DefinitionBlock ("DSDT.aml", "DSDT", 1, 
         }
 
         Notify (\_SB.LID, 0x80)
+        Return
     }
 
     Method (PWRE, 0, NotSerialized)