diff --git a/nix/configurations/vanadium/nixos/display.nix b/nix/configurations/vanadium/nixos/display.nix
index 01003036..b309b82f 100644
--- a/nix/configurations/vanadium/nixos/display.nix
+++ b/nix/configurations/vanadium/nixos/display.nix
@@ -61,7 +61,11 @@
           device, # obtain with `xrandr`
           brightness, # [0..1]
         }:
+        # Hack:
+        # xrandr would consider the display being connected before we can change its brightness
+        # For that reason, we can't base our delay on its output, sadly.
           singleton "10_xrandr_brightness" ''
+            sleep 10
             xrandr --output ${device} --brightness ${toString brightness}
           '';