ddc use raw values not percent

Modules/ControlCenter/Widgets/BrightnessSliderRow.qml

@@ -150,8 +150,16 @@ Row {
             if (!targetDevice) return 1
             return (targetDevice.class === "backlight" || targetDevice.class === "ddc") ? 1 : 0
         }
-        maximum: 100
+        maximum: {
+            if (!targetDevice) return 100
+            return targetDevice.displayMax || 100
+        }
         value: targetBrightness
+        showValue: true
+        unit: {
+            if (!targetDevice) return "%"
+            return targetDevice.class === "ddc" ? "" : "%"
+        }
         onSliderValueChanged: function (newValue) {
             if (DisplayService.brightnessAvailable && targetDeviceName) {
                 DisplayService.setBrightness(newValue, targetDeviceName, true)

Modules/OSD/BrightnessOSD.qml

@@ -65,10 +65,18 @@ DankOSD {
                     if (!deviceInfo) return 1
                     return (deviceInfo.class === "backlight" || deviceInfo.class === "ddc") ? 1 : 0
                 }
-                maximum: 100
+                maximum: {
+                    const deviceInfo = DisplayService.getCurrentDeviceInfo()
+                    if (!deviceInfo) return 100
+                    return deviceInfo.displayMax || 100
+                }
                 enabled: DisplayService.brightnessAvailable
                 showValue: true
-                unit: "%"
+                unit: {
+                    const deviceInfo = DisplayService.getCurrentDeviceInfo()
+                    if (!deviceInfo) return "%"
+                    return deviceInfo.class === "ddc" ? "" : "%"
+                }
                 thumbOutlineColor: Theme.surfaceContainer
                 alwaysShowValue: SettingsData.osdAlwaysShowValue
 

Services/DisplayService.qml

@@ -50,7 +50,8 @@ Singleton {
                 "current": device.current,
                 "percentage": device.currentPercent,
                 "max": device.max,
-                "backend": device.backend
+                "backend": device.backend,
+                "displayMax": device.class === "ddc" ? device.max : 100
             }
             devices = newDevices
         }
@@ -95,7 +96,8 @@ Singleton {
                                               "current": d.current,
                                               "percentage": d.currentPercent,
                                               "max": d.max,
-                                              "backend": d.backend
+                                              "backend": d.backend,
+                                              "displayMax": d.class === "ddc" ? d.max : 100
                                           }))
 
         const newBrightness = {}
@@ -146,7 +148,8 @@ Singleton {
 
         const deviceInfo = getCurrentDeviceInfoByName(actualDevice)
         const minValue = (deviceInfo && (deviceInfo.class === "backlight" || deviceInfo.class === "ddc")) ? 1 : 0
-        const clampedValue = Math.max(minValue, Math.min(100, percentage))
+        const maxValue = deviceInfo?.displayMax || 100
+        const clampedValue = Math.max(minValue, Math.min(maxValue, percentage))
 
         if (!DMSService.isConnected) {
             console.warn("DisplayService: Not connected to DMS")
@@ -256,6 +259,14 @@ Singleton {
         return null
     }
 
+    function getDeviceMax(deviceName) {
+        const deviceInfo = getCurrentDeviceInfoByName(deviceName)
+        if (!deviceInfo) {
+            return 100
+        }
+        return deviceInfo.displayMax || 100
+    }
+
     // Night Mode Functions - Simplified
     function enableNightMode() {
         if (!gammaControlAvailable) {