diff --git a/debian/radxa-system-config-rockchip.postrm b/debian/radxa-system-config-rockchip.postrm
index b98fc6b..1cf138e 100644
--- a/debian/radxa-system-config-rockchip.postrm
+++ b/debian/radxa-system-config-rockchip.postrm
@@ -9,6 +9,7 @@ case $1 in
         /usr/share/applications/mimeapps.list
         /etc/modprobe.d/panfrost.conf
         /usr/share/wayland-sessions/plasmawayland.desktop
+        /usr/share/gdm/gdm.schemas
         "
         for i in $conflicts
         do
diff --git a/debian/radxa-system-config-rockchip.preinst b/debian/radxa-system-config-rockchip.preinst
index 6d35440..0bcd932 100755
--- a/debian/radxa-system-config-rockchip.preinst
+++ b/debian/radxa-system-config-rockchip.preinst
@@ -7,6 +7,7 @@ case $1 in
         /usr/share/applications/mimeapps.list
         /etc/modprobe.d/panfrost.conf
         /usr/share/wayland-sessions/plasmawayland.desktop
+        /usr/share/gdm/gdm.schemas
         "
         for i in $conflicts
         do
diff --git a/radxa-system-config-rockchip/usr/share/gdm/gdm.schemas b/radxa-system-config-rockchip/usr/share/gdm/gdm.schemas
new file mode 100644
index 0000000..e874b91
--- /dev/null
+++ b/radxa-system-config-rockchip/usr/share/gdm/gdm.schemas
@@ -0,0 +1,144 @@
+<gdmschemafile>
+  <schemalist>
+
+    <schema>
+      <key>chooser/Multicast</key>
+      <signature>b</signature>
+      <default>false</default>
+    </schema>
+    <schema>
+      <key>chooser/MulticastAddr</key>
+      <signature>s</signature>
+      <default>ff02::1</default>
+    </schema>
+
+    <schema>
+      <key>daemon/User</key>
+      <signature>s</signature>
+      <default>Debian-gdm</default>
+    </schema>
+    <schema>
+      <key>daemon/Group</key>
+      <signature>s</signature>
+      <default>Debian-gdm</default>
+    </schema>
+    <schema>
+      <key>daemon/AutomaticLoginEnable</key>
+      <signature>b</signature>
+      <default>false</default>
+    </schema>
+    <schema>
+      <key>daemon/AutomaticLogin</key>
+      <signature>s</signature>
+      <default></default>
+    </schema>
+    <schema>
+      <key>daemon/TimedLoginEnable</key>
+      <signature>b</signature>
+      <default>false</default>
+    </schema>
+    <schema>
+      <key>daemon/TimedLogin</key>
+      <signature>s</signature>
+      <default></default>
+    </schema>
+    <schema>
+      <key>daemon/TimedLoginDelay</key>
+      <signature>i</signature>
+      <default>30</default>
+    </schema>
+    <schema>
+      <key>daemon/InitialSetupEnable</key>
+      <signature>b</signature>
+      <default>true</default>
+    </schema>
+    <schema>
+      <key>daemon/PreferredDisplayServer</key>
+      <signature>s</signature>
+      <default>wayland</default>
+    </schema>
+    <schema>
+      <key>daemon/WaylandEnable</key>
+      <signature>b</signature>
+      <default>false</default>
+    </schema>
+    <schema>
+      <key>daemon/XorgEnable</key>
+      <signature>b</signature>
+      <default>true</default>
+    </schema>
+    <schema>
+      <key>security/AllowRemoteAutoLogin</key>
+      <signature>b</signature>
+      <default>false</default>
+    </schema>
+
+    <schema>
+      <key>debug/Enable</key>
+      <signature>b</signature>
+      <default>false</default>
+    </schema>
+
+    <schema>
+      <key>security/DisallowTCP</key>
+      <signature>b</signature>
+      <default>true</default>
+    </schema>
+    <schema>
+      <key>xdmcp/Enable</key>
+      <signature>b</signature>
+      <default>false</default>
+    </schema>
+    <schema>
+      <key>xdmcp/ShowLocalGreeter</key>
+      <signature>b</signature>
+      <default>true</default>
+    </schema>
+    <schema>
+      <key>xdmcp/MaxPending</key>
+      <signature>i</signature>
+      <default>4</default>
+    </schema>
+    <schema>
+      <key>xdmcp/MaxSessions</key>
+      <signature>i</signature>
+      <default>16</default>
+    </schema>
+    <schema>
+      <key>xdmcp/MaxWait</key>
+      <signature>i</signature>
+      <default>30</default>
+    </schema>
+    <schema>
+      <key>xdmcp/DisplaysPerHost</key>
+      <signature>i</signature>
+      <default>1</default>
+    </schema>
+    <schema>
+      <key>xdmcp/Port</key>
+      <signature>i</signature>
+      <default>177</default>
+    </schema>
+    <schema>
+      <key>xdmcp/HonorIndirect</key>
+      <signature>b</signature>
+      <default>true</default>
+    </schema>
+    <schema>
+      <key>xdmcp/MaxWaitIndirect</key>
+      <signature>i</signature>
+      <default>30</default>
+    </schema>
+    <schema>
+      <key>xdmcp/PingIntervalSeconds</key>
+      <signature>i</signature>
+      <default>0</default>
+    </schema>
+    <schema>
+      <key>xdmcp/Willing</key>
+      <signature>s</signature>
+      <default>/etc/gdm3/Xwilling</default>
+    </schema>
+  </schemalist>
+</gdmschemafile>
+