diff --git a/Create-DevTerm-A04-OS-image-from-scratch.md b/Create-DevTerm-A04-OS-image-from-scratch.md
index 827a8ad..7cddbd5 100644
--- a/Create-DevTerm-A04-OS-image-from-scratch.md
+++ b/Create-DevTerm-A04-OS-image-from-scratch.md
@@ -204,6 +204,15 @@ primary-color='#222222'
 [org/gnome/login-screen]
 disable-restart-buttons=true
 ```
+#### config gdm3 autologin 
+/etc/gdm3/custom.conf  
+
+```
+[daemon]
+...
+AutomaticLoginEnable = true
+AutomaticLogin = cpi
+```
 
 ## libreoffice fix for panfrost issue
 ` sudo apt install libreoffice-gtk3 `