diff --git a/nixos/i3/xidlehook.nix b/nixos/i3/xidlehook.nix
index 5ac40068..6158c4e2 100644
--- a/nixos/i3/xidlehook.nix
+++ b/nixos/i3/xidlehook.nix
@@ -4,18 +4,21 @@
     not-when-audio = true;
     not-when-fullscreen = true;
     environment = {
-      "PRIMARY_DISPLAY" = "$(xrandr | awk '/ primary/{print $1}')";
+      "PRIMARY_DISPLAY" = "$(${pkgs.xorg.xrandr} | awk '/ primary/{print $1}')";
     };
     timers = [
       {
         delay = 60;
-        command = ''xrandr --output "$PRIMARY_DISPLAY" --brightness .1'';
-        canceller = ''xrandr --output "$PRIMARY_DISPLAY" --brightness 1'';
+        command =
+          ''${pkgs.xorg.xrandr} --output "$PRIMARY_DISPLAY" --brightness .1'';
+        canceller =
+          ''${pkgs.xorg.xrandr} --output "$PRIMARY_DISPLAY" --brightness 1'';
       }
       {
-        delay = 600;
+        delay = 240;
         command = "${pkgs.writeShellScript "my-script" ''
-          xrandr --output "$PRIMARY_DISPLAY" --brightness 1
+          ${pkgs.xorg.xrandr}/bin/xrandr --output "$PRIMARY_DISPLAY" --brightness 1
+          ${pkgs.xorg.xrandr}/bin/xrandr --auto
           systemctl suspend
         ''}";
       }