diff --git a/src/share/rsdk/build/mod/packages/kde.libjsonnet b/src/share/rsdk/build/mod/packages/kde.libjsonnet
index 54cb1432..a45b96c9 100644
--- a/src/share/rsdk/build/mod/packages/kde.libjsonnet
+++ b/src/share/rsdk/build/mod/packages/kde.libjsonnet
@@ -96,7 +96,16 @@ then
     // Debian 12's sddm has issue handling screen hotplug, as well as screen wake up
     // https://applink.feishu.cn/client/message/link/open?token=AmY%2FRdMxxQABZoS475OOwAQ%3D
     // https://vamrs.feishu.cn/sheets/IFXSs271ThaBVytTCVbcMcxsnpc?sheet=0KtklS&rangeId=0KtklS_iOZ0zYhC18&rangeVer=1
-    gdm()
+    gdm() + {
+        mmdebstrap+: {
+            packages+: 
+            // Disable sleep in GDM3 when using it with KDE Plasma
+            // https://applink.feishu.cn/client/message/link/open?token=Ami%2F2XW%2Fg4ADaQm1ZLZRwBw%3D
+            [
+                "radxa-system-config-gdm3-disable-sleep",
+            ],
+        },
+    }
 else
     {}
 )