=== modified file 'bin/ubiquity-dm'
--- bin/ubiquity-dm	2014-04-12 04:55:32 +0000
+++ bin/ubiquity-dm	2014-12-08 02:47:09 +0000
@@ -167,7 +167,9 @@
     def drop_privileges(self):
         os.setgroups(self.groups)
         os.setgid(self.gid)
+        os.setegid(self.gid)
         os.setuid(self.uid)
+        os.seteuid(self.uid)
 
     def server_preexec(self):
         signal.signal(signal.SIGUSR1, signal.SIG_IGN)
@@ -365,6 +367,7 @@
 
             background_image = None
             for background in (
+                    '/usr/share/backgrounds/warty-final-ubuntu.png',
                     '/usr/share/xfce4/backdrops/ubuntustudio-1310.png',
                     '/usr/share/xfce4/backdrops/xubuntu-wallpaper.png',
                     '/usr/share/lubuntu/wallpapers/'
@@ -376,6 +379,9 @@
 
             accessibility = False
             if gsettings._gsettings_exists():
+                usd = '/usr/lib/unity-settings-daemon/unity-settings-daemon'
+                gsd = '/usr/lib/gnome-settings-daemon/gnome-settings-daemon'
+
                 accessibility = gsettings.get(
                     'org.gnome.desktop.interface', 'toolkit-accessibility',
                     self.username)
@@ -414,25 +420,34 @@
                         ('org.gnome.desktop.wm.preferences', 'num-workspaces',
                          '1'))
 
+                if osextras.find_on_path(usd):
+                    gsettings_keys.append(
+                        ('org.gnome.settings-daemon.plugins.background',
+                         'active', 'false'))
+
                 for gs_schema, gs_key, gs_value in gsettings_keys:
                     subprocess.call(
                         ['gsettings', 'set', gs_schema, gs_key, gs_value],
                         stdin=null, stdout=logfile, stderr=logfile,
                         preexec_fn=self.drop_privileges)
 
-                usd = '/usr/lib/unity-settings-daemon/unity-settings-daemon'
-                gsd = '/usr/lib/gnome-settings-daemon/gnome-settings-daemon'
                 if osextras.find_on_path(usd):
                     extras.append(subprocess.Popen(
                         [usd], stdin=null, stdout=logfile, stderr=logfile,
                         preexec_fn=self.drop_privileges))
+                    cmd = "xwininfo -root -tree | awk '{print $1}' | grep ^0x"
+                    cmd += " | while read id; do xprop -id $id; done | grep "
+                    cmd += "_XSETTINGS_SETTINGS > /dev/null"
+                    while not subprocess.call(cmd, shell=True):
+                        log('Waitting for xsettings plugin to be ready')
+                        time.sleep(1)
 
                 elif osextras.find_on_path(gsd):
                     extras.append(subprocess.Popen(
                         [gsd], stdin=null, stdout=logfile, stderr=logfile,
                         preexec_fn=self.drop_privileges))
 
-                elif background_image and osextras.find_on_path('feh'):
+                if background_image and osextras.find_on_path('feh'):
                     subprocess.call(
                         ['feh', '--bg-fill', background_image],
                         stdin=null, stdout=logfile, stderr=logfile,
@@ -557,7 +572,7 @@
                             stdin=null, stdout=logfile, stderr=logfile,
                             preexec_fn=self.drop_privileges))
         elif self.frontend == 'kde_ui':
-            if not 'access=v1' in proc_cmdline:
+            if 'access=v1' not in proc_cmdline:
                 log('paint background')
                 path = '/usr/share/wallpapers/kde-default.png'
                 extras.append(subprocess.Popen(

=== modified file 'ubiquity/gsettings.py'
--- ubiquity/gsettings.py	2013-02-19 11:33:07 +0000
+++ ubiquity/gsettings.py	2014-12-08 02:47:09 +0000
@@ -48,7 +48,7 @@
         user = os.getenv("SUDO_USER", os.getenv("USER", "root"))
 
     subp = subprocess.Popen(
-        ['sudo', '-u', user, 'gsettings', 'get', schema, key],
+        ['sudo', '-H', '-u', user, 'gsettings', 'get', schema, key],
         stdout=subprocess.PIPE, stderr=subprocess.PIPE,
         preexec_fn=misc.drop_all_privileges, universal_newlines=True)
     value = subp.communicate()[0].rstrip('\n')
@@ -103,7 +103,8 @@
         value = "true" if value else "false"
 
     subprocess.call(
-        ['sudo', '-u', user, 'gsettings', 'set', schema, key, str(value)],
+        ['sudo', '-H', '-u', user, 'gsettings', 'set', schema, key,
+         str(value)],
         preexec_fn=misc.drop_all_privileges)
 
 
@@ -123,5 +124,5 @@
         user = os.getenv("SUDO_USER", os.getenv("USER", "root"))
 
     subprocess.call(
-        ['sudo', '-u', user, 'gsettings', 'reset', schema, key],
+        ['sudo', '-H', '-u', user, 'gsettings', 'reset', schema, key],
         preexec_fn=misc.drop_all_privileges)