diff --git a/cec.sh b/cec.sh
index 54dbaf0..7876c00 100755
--- a/cec.sh
+++ b/cec.sh
@@ -1,15 +1,13 @@
 #!/bin/bash
 
 tv_on() {
-	cec-ctl --to 0 --image-view-on 
-	#xrandr --output HDMI-A-0 --mode 1920x1080
-	xrandr --output HDMI-A-0 --auto; sleep 3; xrandr --output HDMI-A-0 --mode 1920x1080
+	echo "on 0" > /run/cec.fifo
 	echo "on">~/scripts/PJ/tv_state
 	curl -X POST -d '' $REPORT_TV_ON
 }
 
 tv_off() {
-	cec-ctl --to 0 --standby 
+	echo "standby 0" > /run/cec.fifo
 	echo "off">~/scripts/PJ/tv_state
 	curl -X POST -d '' $REPORT_TV_OFF
 }
diff --git a/nix/cec.nix b/nix/cec.nix
new file mode 100644
index 0000000..6251fa5
--- /dev/null
+++ b/nix/cec.nix
@@ -0,0 +1,33 @@
+{ pkgs, ... }:
+{
+  boot.kernelModules = [ "cec" ];
+
+  environment.systemPackages = with pkgs; [
+    libcec
+  ];
+
+  services.udev.extraRules = ''
+    # Pulse-Eight CEC adapter
+    SUBSYSTEM=="tty" ACTION=="add" ATTRS{manufacturer}=="Pulse-Eight" ATTRS{product}=="CEC Adapter" GROUP="video" MODE="0660"
+  '';
+
+  systemd.sockets."cec-client" = {
+    wantedBy = [ "sockets.target" ];
+    socketConfig = {
+      ListenFIFO = "/run/cec.fifo";
+      SocketGroup = "video";
+      SocketMode = "0660";
+    };
+  };
+
+  systemd.services."cec-client" = {
+    wantedBy = [ "multi-user.target" ];
+    serviceConfig = {
+      ExecStart = ''${pkgs.libcec}/bin/cec-client -d 1 -o /dev/ttyACM0'';
+      ExecStop = ''/bin/sh -c "echo q > /run/cec.fifo"'';
+      StandardInput = "socket";
+      StandardOutput = "journal";
+      Restart = "on-failure";
+    };
+  };
+}