diff -Nru user-setup-1.48ubuntu5/debian/changelog user-setup-1.48ubuntu6/debian/changelog
--- user-setup-1.48ubuntu5/debian/changelog	2015-04-16 18:37:09.000000000 +0000
+++ user-setup-1.48ubuntu6/debian/changelog	2015-08-18 05:01:46.000000000 +0000
@@ -1,3 +1,12 @@
+user-setup (1.48ubuntu6) wily; urgency=medium
+
+  * Update autologin LightDM confgiguration to used [Seat:*] sections instead of
+    deprecated [SeatDefaults]
+  * Fix autologin LightDM confgiguration to not set innapropriate setting
+    autologin-session to an invalid value (LP: #1484083)
+
+ -- Robert Ancell <robert.ancell@canonical.com>  Tue, 18 Aug 2015 17:00:03 +1200
+
 user-setup (1.48ubuntu5) vivid; urgency=medium
 
   * Fix typo in previous upload: AutomaticLogin line for gdm was containing
diff -Nru user-setup-1.48ubuntu5/user-setup-apply user-setup-1.48ubuntu6/user-setup-apply
--- user-setup-1.48ubuntu5/user-setup-apply	2015-04-16 18:36:59.000000000 +0000
+++ user-setup-1.48ubuntu6/user-setup-apply	2015-08-18 04:59:44.000000000 +0000
@@ -329,13 +329,12 @@
 				LightDMCustomFile=$ROOT/etc/lightdm/lightdm.conf
 				AutologinParameters="autologin-guest=false\n\
 autologin-user=$USER\n\
-autologin-user-timeout=0\n\
-autologin-session=lightdm-autologin"
+autologin-user-timeout=0"
 				if ! grep -qs '^autologin-user' $LightDMCustomFile; then
-					if ! grep -qs '^\[SeatDefaults\]' $LightDMCustomFile; then
-						echo '[SeatDefaults]' >> $LightDMCustomFile
+					if ! grep -qs '^\[Seat:*\]' $LightDMCustomFile; then
+						echo '[Seat:*]' >> $LightDMCustomFile
 					fi
-					sed -i "s/\[SeatDefaults\]/\[SeatDefaults\]\n$AutologinParameters/" $LightDMCustomFile
+					sed -i "s/\[Seat:*\]/\[Seat:*\]\n$AutologinParameters/" $LightDMCustomFile
 				#oem config scenario
 				else
 					sed -i "s/^\(\(str  *\)\?autologin-user\)=.*$/\1=$USER/g;" $ROOT/etc/lightdm/lightdm.conf