diff --git a/modeset2.py b/modeset2.py
index 7ca55ee..2e32b00 100755
--- a/modeset2.py
+++ b/modeset2.py
@@ -17,8 +17,20 @@ PATH_RESC_KBDLGT = "$HOME/.config/navi/kbdlgt"
 PATH_RESC_SCRLGT = "$HOME/.config/navi/scrlgt"
 VAR_KBDNAME = "asus::kbd_backlight"
 
+
 async def set_brightness(device: int, value: int, save_state = False):
-    return None
+    state_kbdlgt = get_brightness(1)
+    state_scrlgt = get_brightness(0)
+    if value == -1:
+        with open(os.path.expandvars(PATH_RESC_SCRLGT if device == 0 else PATH_RESC_KBDLGT), 'r') as f:
+            value = int(f.read())
+            f.close()
+    command = f"brightnessctl set {value}%" if device == 0 else f"brightnessctl --device {VAR_KBDNAME} set {value}%"
+    await open_subprocess(command)
+    if save_state:
+        with open(os.path.expandvars(PATH_RESC_SCRLGT if device == 0 else PATH_RESC_KBDLGT), 'w') as f:
+            f.write(str(state_scrlgt if device == 0 else state_kbdlgt))
+            f.close()
 
 
 async def connect_keyboard():
@@ -54,8 +66,8 @@ def get_brightness(device: int):
     if device == 0:
         cmd = ['brightnessctl']
     elif device == 1:
-        cmd = ['brightnessctl', '']
-    return int(run(, text=True, capture_output=True).stdout.split('(')[1].split(')')[0].replace('%', ''))
+        cmd = ['brightnessctl', '--device', VAR_KBDNAME]
+    return int(run(cmd, text=True, capture_output=True).stdout.split('(')[1].split(')')[0].replace('%', ''))
     
 
 def get_volume():