diff --git a/src/drivers/gfx/nvidia/acpi/boost.asl b/src/drivers/gfx/nvidia/acpi/boost.asl
index 98abc522f7..8a88955a52 100644
--- a/src/drivers/gfx/nvidia/acpi/boost.asl
+++ b/src/drivers/gfx/nvidia/acpi/boost.asl
@@ -10,7 +10,7 @@
 #define GPS_FUNC_PSHARESTATUS		32
 #define GPS_FUNC_PSHAREPARAMS		42
 
-Method (NVGB, 2, NotSerialized)
+Method (GPS, 2, Serialized)
 {
 	Printf("GPS {")
 
@@ -24,13 +24,13 @@ Method (NVGB, 2, NotSerialized)
 
 		// Get current platform status, thermal budget
 		Case (GPS_FUNC_PSHARESTATUS) {
-			Printf("  GPS_FUNC_PSHARESTATUS")
+			Printf("  GPS_FUNC_PSHARESTATUS: %o", ToHexString(Arg1))
 			Local0 = Buffer (4) { 0 }
 		}
 
 		// Get GPU Boost platform parameters
 		Case (GPS_FUNC_PSHAREPARAMS) {
-			Printf("  GPS_FUNC_PSHAREPARAMS")
+			Printf("  GPS_FUNC_PSHAREPARAMS: %o", ToHexString(Arg1))
 			CreateField (Arg1, 0, 3, QTYP)		// Query Type
 			CreateField (Arg1, 8, 1, GTMP)		// GPU temperature status
 			CreateField (Arg1, 9, 1, CTMP)		// CPU temperature status
@@ -44,6 +44,8 @@ Method (NVGB, 2, NotSerialized)
 			VERS = 0x00010000
 			STAT = QTYP
 
+			Printf("    Query Type = %o", ToInteger(QTYP))
+
 			Switch (ToInteger(QTYP)) {
 				// Get current status
 				Case (0) {
diff --git a/src/drivers/gfx/nvidia/acpi/gpu.asl b/src/drivers/gfx/nvidia/acpi/gpu.asl
index 19971e445e..5c24bc749b 100644
--- a/src/drivers/gfx/nvidia/acpi/gpu.asl
+++ b/src/drivers/gfx/nvidia/acpi/gpu.asl
@@ -10,11 +10,12 @@
 #define GPS_REVISION_ID		0x200
 
 #define JT_DSM_GUID		"CBECA351-067B-4924-9CBD-B46B00B86F34"
-#define JT_REVISION_ID		0x200
+#define JT_REVISION_ID		0x103
 
 #define NVOP_DSM_GUID		"A486D8F8-0BDA-471B-A72B-6042A6B5BEE0"
 #define NVOP_REVISION_ID	0x100
 
+// 00:01.0
 Device (\_SB.PCI0.PEG0)
 {
 	Name (_ADR, CONFIG_DRIVERS_GFX_NVIDIA_BRIDGE << 16)
@@ -24,12 +25,20 @@ Device (\_SB.PCI0.PEG0)
 
 		Method (_ON)
 		{
+			Printf("PEG0._ON {")
+			// TODO: Check for deferred GCx action
+			\_SB.PCI0.PEG0.DGPU._ON()
 			_STA = 1
+			Printf("} PEG0._ON")
 		}
 
 		Method (_OFF)
 		{
+			Printf("PEG0._OFF {")
+			// TODO: Check for deferred GCx action
+			\_SB.PCI0.PEG0.DGPU._OFF()
 			_STA = 0
+			Printf("} PEG0._OFF")
 		}
 	}
 
@@ -37,15 +46,13 @@ Device (\_SB.PCI0.PEG0)
 	Name (_PR3, Package () { PWRR })
 }
 
+// 01:00.0
 Device (\_SB.PCI0.PEG0.DGPU)
 {
 	Name(_ADR, 0x00000000)
 
-	// GPU Power
-	Name (GPWR, 0)
-
-	// GCx State
-	Name (GCST, 0)
+	Name (GPWR, 0)		// GPU Power
+	Name (GCST, 6)		// GCx State
 
 	// For supporting Hybrid Graphics, the package refers to the PCIe controller
 	// itself, which leverages GC6 Control methods under the dGPU namespace.
@@ -54,6 +61,7 @@ Device (\_SB.PCI0.PEG0.DGPU)
 
 	Method (_STA)
 	{
+		Printf("DGPU._STA")
 		/*
 		 * Only return "On" when:
 		 * - GPU power is good
@@ -70,7 +78,7 @@ Device (\_SB.PCI0.PEG0.DGPU)
 
 	Method (_ON)
 	{
-		Printf("_ON {")
+		Printf("DGPU._ON {")
 		Printf("  Enable GPU power")
 		STXS(DGPU_PWR_EN)
 		Sleep(10)
@@ -80,12 +88,13 @@ Device (\_SB.PCI0.PEG0.DGPU)
 		Sleep(10)
 
 		GPWR = 1
-		Printf("} _ON")
+		GCST = 0
+		Printf("} DGPU._ON")
 	}
 
 	Method (_OFF)
 	{
-		Printf("_OFF {")
+		Printf("DGPU._OFF {")
 		Printf("  Put GPU in reset")
 		CTXS(DGPU_RST_N)
 		Sleep(10)
@@ -95,36 +104,57 @@ Device (\_SB.PCI0.PEG0.DGPU)
 		Sleep(10)
 
 		GPWR = 0
-		Printf("} _OFF")
+		GCST = 6
+		Printf("} DGPU._OFF")
 	}
 
 	Method (_PS0)
 	{
 		// XGXS, XGIS, XCLM
+		Printf("_PS0 {}")
 	}
 
 	Method (_PS3)
 	{
 		// EGNS, EGIS, EGIN
+		Printf("_PS3 {}")
 	}
 
-	Method (_DSM, 4, NotSerialized)
+	Method (_DSM, 4, Serialized)
 	{
+		// Notebook Common Interface
+		If (Arg0 == ToUUID(NBCI_DSM_GUID)) {
+			Printf("NBCI_DSM_GUID")
+			If (Arg1 <= NBCI_REVISION_ID) {
+				Printf("  TODO: Unimplemented!")
+			}
+		}
+
 		// NVIDIA GPU Boost
 		If (Arg0 == ToUUID(GPS_DSM_GUID)) {
+			Printf("GPS_DSM_GUID")
 			If (Arg1 <= GPS_REVISION_ID) {
-				Return(NVGB(Arg2, Arg3))
+				Return(GPS(Arg2, Arg3))
 			}
 		}
 
 		// NVIDIA Low Power States
 		If (Arg0 == ToUUID(JT_DSM_GUID)) {
+			Printf("JT_DSM_GUID")
 			If (Arg1 <= JT_REVISION_ID) {
 				Return(NVJT(Arg2, Arg3))
 			}
 		}
 
-		Printf("Unsupported GUID")
+		// Advanced Optimus
+		If (Arg0 == ToUUID(NVOP_DSM_GUID)) {
+			Printf("NVOP_DSM_GUID")
+			If (Arg1 <= NVOP_REVISION_ID) {
+				Printf("  TODO: Unimplemented!")
+			}
+		}
+
+		Printf("Unsupported GUID: %o", ToHexString(Arg0))
 		Return(NVIDIA_ERROR_UNSUPPORTED)
 	}
 
diff --git a/src/drivers/gfx/nvidia/acpi/low_power_states.asl b/src/drivers/gfx/nvidia/acpi/low_power_states.asl
index 3df57118a3..7648f64e07 100644
--- a/src/drivers/gfx/nvidia/acpi/low_power_states.asl
+++ b/src/drivers/gfx/nvidia/acpi/low_power_states.asl
@@ -7,19 +7,20 @@
 #define JT_FUNC_POWERCONTROL	3
 #define JT_FUNC_PLATPOLICY	4
 
-Method (NVJT, 2, NotSerialized)
+Method (NVJT, 2, Serialized)
 {
 	Printf("NVJT {")
 	Switch (ToInteger(Arg0)) {
 		Case (JT_FUNC_SUPPORT) {
 			Printf("  JT_FUNC_SUPPORT");
 			// Functions supported: 0, 1, 3, 4
-			Local0 = Buffer() { 0x1B, 0, 0, 0 }
+			//Local0 = Buffer() { 0x1B, 0, 0, 0 }
+			Local0 = Buffer() { 0x13, 0, 0, 0 }
 		}
 
 		Case (JT_FUNC_CAPS) {
 			Printf("  JT_FUNC_CAPS");
-			Local0 = Buffer(4) { 0, 0, 0, 0 }
+			Local0 = Buffer(4) { 0 }
 
 			// G-SYNC NVSR Power Features
 			CreateField (Local0, 0, 1, JTEN)
@@ -78,7 +79,7 @@ Method (NVJT, 2, NotSerialized)
 			GSW = 0
 
 			// Maximum Revision Supported
-			CreateField (Local0, 20, 16, MXRV)
+			CreateField (Local0, 20, 12, MXRV)
 			MXRV = JT_REVISION_ID
 		}
 
@@ -89,7 +90,7 @@ Method (NVJT, 2, NotSerialized)
 		}
 
 		Case (JT_FUNC_PLATPOLICY) {
-			Printf("  JT_FUNC_PLATPOLICY");
+			Printf("  JT_FUNC_PLATPOLICY: %o", ToHexString(Arg1));
 			//CreateField (Arg1, 2, 1, AUD)		// Azalia Audio Device
 			//CreateField (Arg1, 3, 1, ADM)		// Audio Disable Mask
 			//CreateField (Arg1, 4, 4, DGS)		// Driver expected State Mask