diff --git a/configuration.nix b/configuration.nix
index cb390dc..bc74243 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -29,27 +29,32 @@
   };
 
   environment.pathsToLink = ["/libexec"];
-  
+
   # Enable the X11 windowing system
-  services.xserver = {
-    enable = true;
+  services = {
     displayManager = {
       sddm = {
         enable = true;
         package = pkgs.kdePackages.sddm;
       };
     };   
-    desktopManager = {
-      xterm.enable = false;
-    };
-
-    windowManager.i3 = {
+    xserver = {
       enable = true;
-      extraPackages = with pkgs; [
-        rofi
-        polybar
-        dunst
-      ];
+      desktopManager = {
+        xterm.enable = false;
+      };
+
+      windowManager.i3 = {
+        enable = true;
+        extraPackages = with pkgs; [
+          rofi
+          polybar
+          polybar-pulseaudio-control
+          dunst
+          i3lock-color # locksreen
+          arandr # manager monitor
+        ];
+      };
     };
   };
 
@@ -97,14 +102,15 @@
   # $ nix search wget
   environment.shells = with pkgs; [ zsh ];
   users.defaultUserShell = pkgs.zsh;
-  environment.systemPackages = with pkgs; [
-    auto-cpufreq
-    neovim
-    wget
-    neofetch
-    git
-    gcc
-    nodejs_22
+  environment.systemPackages = [
+    pkgs.auto-cpufreq
+    pkgs.neovim
+    pkgs.wget
+    pkgs.neofetch
+    pkgs.git
+    pkgs.gcc
+    pkgs.nodejs_22
+    pkgs.cargo
   ];
 
   # Some programs need SUID wrappers, can be configured further or are
diff --git a/home.nix b/home.nix
index 5e2ffdc..03e1fa3 100644
--- a/home.nix
+++ b/home.nix
@@ -65,17 +65,14 @@
     pkgs.tmux # multiplexer
     pkgs.nitrogen # wallpapers
     pkgs.fzf # fuzzy search
-    pkgs.i3lock-color # locksreen
     pkgs.brave # browser
     pkgs.oh-my-zsh # prompt
     pkgs.picom # compositoe
     pkgs.ranger # file manager
     pkgs.superfile # file manager
     pkgs.obsidian # notes
-    pkgs.arandr # manager monitor
     pkgs.keepassxc # passwords
     pkgs.devdocs-desktop # docs
-    pkgs.cargo
     pkgs.spicetify-cli
 
     # # It is sometimes useful to fine-tune packages, for example, by applying