diff --git a/docs/display-managers/sddm.md b/docs/display-managers/sddm.md
index 4bd01da..97d230e 100644
--- a/docs/display-managers/sddm.md
+++ b/docs/display-managers/sddm.md
@@ -18,3 +18,8 @@ SDDM (Simple Desktop Display Manager) is the default graphical login manager use
 
 - Replaced KDM (KDE Display Manager) starting with KDE Plasma 5.
 - Used by KDE-centric distributions like KDE neon, OpenSUSE KDE, and Fedora KDE Spin.
+
+```bash
+# control ui login at boot
+systemctl start|stop|enabled|disable sddm
+``