diff --git a/machines/jupiter/configuration.nix b/machines/jupiter/configuration.nix
index d494393..9a54eaa 100644
--- a/machines/jupiter/configuration.nix
+++ b/machines/jupiter/configuration.nix
@@ -49,11 +49,22 @@
   # Try fix wifi disconnect
   networking.networkmanager.wifi.powersave = false;
 
-  # Disable hibernate completely
+  # Disable hibernate and suspend completely - this is a headless server.
+  # The board exposes a phantom ACPI lid switch (PNP0C0D) that fires a
+  # "closed" event when the HDMI cable is unplugged, which used to trigger
+  # a real suspend via logind's default HandleLidSwitch=suspend.
   powerManagement.enable = true;
   systemd.targets."hibernate".enable = false;
   systemd.targets."hybrid-sleep".enable = false;
   systemd.targets."suspend-then-hibernate".enable = false;
+  systemd.targets."suspend".enable = false;
+  systemd.targets."sleep".enable = false;
+
+  services.logind.settings.Login = {
+    HandleLidSwitch = "ignore";
+    HandleLidSwitchExternalPower = "ignore";
+    HandleLidSwitchDocked = "ignore";
+  };
 
   # Optional: kernel parameter to fully disable hibernation
   boot.kernelParams = [ "nohibernate" ];