diff --git a/hosts/desktop/hardware-configuration.nix b/hosts/desktop/hardware-configuration.nix
index c9f4387..5781d71 100644
--- a/hosts/desktop/hardware-configuration.nix
+++ b/hosts/desktop/hardware-configuration.nix
@@ -87,9 +87,9 @@
       };
   };
 
-  systemd.services = {
+  systemd.timers = {
       btrbk-bak = {
-          after = [ "network.target" ];
+          requires = [ "network-online.target" ];
       };
   };
 
diff --git a/hosts/lifebook/default.nix b/hosts/lifebook/default.nix
index ca3c411..1a2441e 100644
--- a/hosts/lifebook/default.nix
+++ b/hosts/lifebook/default.nix
@@ -82,7 +82,7 @@
         userServices = true;
       };
     };
-    tailscale.enable = true;
+    #tailscale.enable = true;
 
   };
 
diff --git a/hosts/lifebook/hardware-configuration.nix b/hosts/lifebook/hardware-configuration.nix
index 109ec44..780b3b6 100644
--- a/hosts/lifebook/hardware-configuration.nix
+++ b/hosts/lifebook/hardware-configuration.nix
@@ -32,7 +32,7 @@
 	  };
 
 	  kernelModules = [ "kvm-intel" ];
-	  kernelParams = [ "luks.options=fido2-device=auto" "sysrq_always_enabled=1" ];
+	  kernelParams = [ "luks.options=fido2-device=auto" "sysrq_always_enabled=1" "pcie_aspm=force" ];
 	  extraModprobeConfig = ''
 		  options i915 enable_guc=3
 		  '';
@@ -42,10 +42,10 @@
 
   zramSwap.enable = true;
 
-  powerManagement = {
-    powerDownCommands = "${pkgs.kmod}/bin/rmmod intel_lpss_pci";
-    resumeCommands = "${pkgs.kmod}/bin/modprobe intel_lpss_pci";
-  };
+#  powerManagement = {
+#    powerDownCommands = "${pkgs.kmod}/bin/rmmod intel_lpss_pci";
+#    resumeCommands = "${pkgs.kmod}/bin/modprobe intel_lpss_pci";
+#  };
 
 
   services = {
@@ -96,7 +96,7 @@
 
                       snapshot_preserve_min = "all";
                       target_preserve_min = "no";
-                      target_preserve = "2m 4w";
+                      target_preserve = "2m 4w 3d";
 
                       ssh_identity = "/etc/btrbk/ssh/id_ed25519_btrbk_nas";
                       ssh_user = "btrbk";
@@ -115,9 +115,9 @@
       };
   };
   
-  systemd.services = {
+  systemd.timers = {
       btrbk-bak = {
-          after = [ "network.target" ];
+          requires = [ "network-online.target" ];
       };
   };
 
@@ -214,7 +214,7 @@
     #defaultGateway = "192.168.0.1";
     #nameservers = [ "192.168.0.4" ];
     firewall = {
-      checkReversePath = false;
+      #checkReversePath = false;
       enable = true;
       allowedUDPPorts = [ 24727 51820 ];
       allowedTCPPorts = [ 24727 ];
diff --git a/hosts/nasbackup/hardware-configuration.nix b/hosts/nasbackup/hardware-configuration.nix
index 50af416..ec696f4 100644
--- a/hosts/nasbackup/hardware-configuration.nix
+++ b/hosts/nasbackup/hardware-configuration.nix
@@ -108,6 +108,10 @@
 				  target = "/mnt/nas/Backups/Lifebook";
 				  snapshot_dir = "@snapshots/@lifebook";
 			      };
+#                              "@steamdeck/@home" = {
+#				  target = "/mnt/nas/Backups/Steamdeck";
+#				  snapshot_dir = "@snapshots/@steamdeck";
+#			      };
                           };
                       };
                   };
@@ -130,7 +134,7 @@
 
   systemd.services = {
       btrbk-bak = {
-          after = [ "network.target" ];
+          requires = [ "network-online.target" ];
       };
   };
 
diff --git a/hosts/steamdeck/hardware-configuration.nix b/hosts/steamdeck/hardware-configuration.nix
index b1ce700..241556a 100644
--- a/hosts/steamdeck/hardware-configuration.nix
+++ b/hosts/steamdeck/hardware-configuration.nix
@@ -74,9 +74,42 @@
                       };
                   };
               };
+#              bak = {
+#                  onCalendar = "daily";
+#                  settings = {
+#	              stream_buffer = "256m";
+#                      stream_compress = "lz4";
+#                      incremental = "yes";
+#                      snapshot_create = "no";
+#                      snapshot_dir = "@snapshots";
+#                      timestamp_format = "long";
+#
+#                      snapshot_preserve_min = "all";
+#                      target_preserve_min = "no";
+#                      target_preserve = "2m 4w 3d";
+#
+#                      ssh_identity = "/etc/btrbk/ssh/id_ed25519_btrbk_nas";
+#                      ssh_user = "btrbk";
+#                    
+#                      volume =  {
+#                          "/mnt/snapshots/root" = {
+#                              subvolume = {
+#                                  "@home" = {};
+#                              };
+#	                      target = "ssh://jupiter.home.opel-online.de:2220/mnt/snapshots/Mars/@snapshots/@steamdeck";
+#                          };
+#                      };
+#	          };
+#	      };
           };
       };
   };
+#
+#  systemd.timers = {
+#      btrbk-bak = {
+#          requires = [ "network-online.target" ];
+#      };
+#  };
 
   fileSystems."/" =
     { device = "/dev/mapper/crypted";