diff --git a/Manual/SSDT-PNLF.dsl b/Manual/SSDT-PNLF.dsl
new file mode 100644
index 00000000..2a4354f3
--- /dev/null
+++ b/Manual/SSDT-PNLF.dsl
@@ -0,0 +1,51 @@
+// Adding PNLF device for WhateverGreen.kext and others.
+// This is a simplified PNLF version originally taken from RehabMan/OS-X-Clover-Laptop-Config repository:
+// https://raw.githubusercontent.com/RehabMan/OS-X-Clover-Laptop-Config/master/hotpatch/SSDT-PNLF.dsl
+// Rename GFX0 to anything else if your IGPU name is different.
+//
+// Licensed under GNU General Public License v2.0
+// https://github.com/RehabMan/OS-X-Clover-Laptop-Config/blob/master/License.md
+
+DefinitionBlock ("", "SSDT", 2, "ACDT", "PNLF", 0x00000000)
+{
+    External (_SB_.PCI0.GFX0, DeviceObj)    // (from opcode)
+
+    Scope (\_SB.PCI0.GFX0)
+    {
+        // For backlight control
+        Device (PNLF)
+        {
+         // Name(_ADR, Zero)
+            Name (_HID, EisaId ("APP0002"))  // _HID: Hardware ID
+            Name (_CID, "backlight")  // _CID: Compatible ID
+            // _UID is set depending on PWMMax to match profiles in WhateverGreen.kext https://github.com/acidanthera/WhateverGreen/blob/1.4.7/WhateverGreen/kern_weg.cpp#L32
+            // 14: Sandy/Ivy 0x710
+            // 15: Haswell/Broadwell 0xad9
+            // 16: Skylake/KabyLake 0x56c (and some Haswell, example 0xa2e0008)
+            // 17: custom LMAX=0x7a1
+            // 18: custom LMAX=0x1499
+            // 19: CoffeeLake 0xffff
+            // 99: Other (requires custom profile using WhateverGreen.kext via DeviceProperties applbkl-name and applbkl-data)
+            Name (_UID, Zero)  // _UID: Unique ID
+            Method (_STA, 0, NotSerialized)  // _STA: Status
+            {
+                If (_OSI ("Darwin"))
+                {
+                    Return (0x0B)
+                }
+                Else
+                {
+                    Return (Zero)
+                }
+            }
+        }
+
+        Method (SUID, 1, NotSerialized)
+        {
+            ^PNLF._UID = ToInteger (Arg0)
+            // Return PNLF device name in case of conflict
+            Return ("PNLF")
+        }
+    }
+}
+
diff --git a/WhateverGreen/Info.plist b/WhateverGreen/Info.plist
index a25f305e..2d23e898 100644
--- a/WhateverGreen/Info.plist
+++ b/WhateverGreen/Info.plist
@@ -71,6 +71,8 @@
 		<string>10.0.0</string>
 		<key>com.apple.kpi.unsupported</key>
 		<string>10.0.0</string>
+		<key>com.apple.iokit.IOACPIFamily</key>
+		<string>1.0.0d1</string>
 		<key>com.apple.iokit.IOPCIFamily</key>
 		<string>1.0.0b1</string>
 		<key>as.vit9696.Lilu</key>
diff --git a/WhateverGreen/kern_weg.cpp b/WhateverGreen/kern_weg.cpp
index ff99f15e..1178e051 100644
--- a/WhateverGreen/kern_weg.cpp
+++ b/WhateverGreen/kern_weg.cpp
@@ -11,6 +11,7 @@
 #include <Headers/kern_cpu.hpp>
 #include "kern_weg.hpp"
 
+#include <IOKit/acpi/IOACPIPlatformDevice.h>
 #include <IOKit/graphics/IOFramebuffer.h>
 
 // This is a hack to let us access protected properties.
@@ -375,6 +376,47 @@ void WEG::processKext(KernelPatcher &patcher, size_t index, mach_vm_address_t ad
 		return;
 }
 
+uint32_t processUID(uint32_t deviceid) {
+	uint32_t uid = 0;
+	// list from SSDT-PNLF, use CpuGeneration instead?
+	switch (deviceid) {
+		// Sandy HD3000
+		case 0x010b: case 0x0102:
+		case 0x0106: case 0x1106: case 0x1601: case 0x0116: case 0x0126:
+		case 0x0112: case 0x0122:
+		// Ivy
+		case 0x0152: case 0x0156: case 0x0162: case 0x0166:
+		case 0x016a:
+		// Arrandale
+		case 0x0046: case 0x0042:
+			uid = 14;
+			break;
+
+		// CoffeeLake and Whiskey Lake and CometLake and IceLake
+		case 0x3e9b: case 0x3ea5: case 0x3e92: case 0x3e91: case 0x3ea0: case 0x3ea6: case 0x3e98:
+		case 0x9bc8: case 0x9bc5: case 0x9bc4: case 0xff05: case 0x8a70: case 0x8a71: case 0x8a51:
+		case 0x8a5c: case 0x8a5d: case 0x8a52: case 0x8a53: case 0x8a56: case 0x8a5a: case 0x8a5b:
+		case 0x9b41: case 0x9b21: case 0x9bca: case 0x9ba4:
+			uid = 19;
+			break;
+
+		// Haswell
+		case 0x0d26: case 0x0a26: case 0x0d22: case 0x0412: case 0x0416: case 0x0a16: case 0x0a1e: case 0x0a2e: case 0x041e: case 0x041a:
+		// Broadwell
+		case 0x0bd1: case 0x0bd2: case 0x0bd3: case 0x1606: case 0x160e: case 0x1616: case 0x161e: case 0x1626: case 0x1622: case 0x1612: case 0x162b:
+			uid = 15;
+			break;
+
+		// assume Skylake/KabyLake/KabyLake-R
+		// 0x1916, 0x191E, 0x1926, 0x1927, 0x1912, 0x1932, 0x1902, 0x1917, 0x191b,
+		// 0x5916, 0x5912, 0x591b, others...
+		default:
+			uid = 16;
+			break;
+	}
+	return uid;
+}
+
 void WEG::processBuiltinProperties(IORegistryEntry *device, DeviceInfo *info) {
 	auto name = device->getName();
 
@@ -424,6 +466,34 @@ void WEG::processBuiltinProperties(IORegistryEntry *device, DeviceInfo *info) {
 				DBGLOG("weg", "hooked configRead read methods!");
 			}
 		}
+
+		// Set PNLF _UID by device-id
+		if (auto adev = OSDynamicCast(IOACPIPlatformDevice, obj->getProperty("acpi-device"))) {
+			if (adev->validateObject("SUID") == kIOReturnSuccess) {
+				uint32_t target = processUID(fakeDevice ?: realDevice);
+				OSObject *params[] = { OSNumber::withNumber(target, 32) };
+				OSObject *result;
+				if (adev->evaluateObject("SUID", &result, params, 1) == kIOReturnSuccess) {
+					DBGLOG("weg", "set PNLF _UID to 0x%x", target);
+				} else {
+					SYSLOG("weg", "set PNLF _UID failed");
+				}
+				params[0]->release();
+				// Override _UID property in ioreg with new value
+				OSString *path = OSDynamicCast(OSString, result);
+				auto child = adev->childFromPath(path ? path->getCStringNoCopy() : "PNLF", gIOACPIPlane);
+				if (auto pnlf = OSDynamicCast(IOACPIPlatformDevice, child)) {
+					OSObject *uid = nullptr;
+					if (pnlf->evaluateObject("_UID", &uid) == kIOReturnSuccess)
+						pnlf->setProperty("_UID", uid);
+					OSSafeReleaseNULL(uid);
+				}
+				OSSafeReleaseNULL(result);
+				OSSafeReleaseNULL(child);
+			} else {
+				DBGLOG("weg", "PNLF does not support _UID set");
+			}
+		}
 	} else {
 		SYSLOG("weg", "invalid IGPU device type");
 	}