diff --git a/modules/hardware/bluetooth/default.nix b/modules/hardware/bluetooth/default.nix
index 2e9ee8f..5763148 100644
--- a/modules/hardware/bluetooth/default.nix
+++ b/modules/hardware/bluetooth/default.nix
@@ -18,7 +18,7 @@ in
       powerOnBoot = true;
       settings = {
         General = {
-          Enable = "Source,Sink,Media,Socket";
+          Experimental = true; # show battery percentages
         };
       };
     };
diff --git a/profiles/powersave/default.nix b/profiles/powersave/default.nix
index 4f53939..01d6501 100644
--- a/profiles/powersave/default.nix
+++ b/profiles/powersave/default.nix
@@ -27,5 +27,12 @@ in
       thermald.enable = true;
       upower.enable = true;
     };
+
+    services.udev.extraRules = ''
+      # disable USB auto suspend for Keychron Q3 HE
+      ACTION=="bind", SUBSYSTEM=="usb", ATTR{idVendor}=="3434", ATTR{idProduct}=="0b31", ATTR{power/autosuspend}="-1"
+      # disable USB auto suspend for Keychron Q3
+      ACTION=="bind", SUBSYSTEM=="usb", ATTR{idVendor}=="3434", ATTR{idProduct}=="0123", ATTR{power/autosuspend}="-1"
+    '';
   };
 }
diff --git a/profiles/sway/autostart.nix b/profiles/sway/autostart.nix
index bf814f5..494fc81 100644
--- a/profiles/sway/autostart.nix
+++ b/profiles/sway/autostart.nix
@@ -8,9 +8,12 @@ in
   };
 
   config = lib.mkIf cfg.enable {
-    services.displayManager.lemurs = {
-      enable = true;
-      settings.environment_switcher.include_tty_shell = true;
-    };
+
+    # start sway if login happens
+    environment.interactiveShellInit = ''
+      if test `tty` = /dev/tty1; then
+        exec sway
+      fi
+    '';
   };
 }