diff --git a/include/arm11/hardware/i2c.h b/include/arm11/hardware/i2c.h
index 940adad..ecd96a1 100644
--- a/include/arm11/hardware/i2c.h
+++ b/include/arm11/hardware/i2c.h
@@ -117,7 +117,7 @@
 
 static inline bool i2cmcu_lcd_poweron(void)
 {
-	return I2C_writeReg(I2C_DEV_MCU, 0x22, 1<<1); // bit1 = lcd power enable for both screens
+	return I2C_writeReg(I2C_DEV_MCU, 0x22, 1<<5 | 1<<3 | 1<<1); // bit1 = lcd power enable for both screens
 }
 
 static inline bool i2cmcu_lcd_backlight_poweron(void)
diff --git a/include/hardware/gfx.h b/include/hardware/gfx.h
index 05a42f2..8f67eeb 100644
--- a/include/hardware/gfx.h
+++ b/include/hardware/gfx.h
@@ -25,17 +25,17 @@
 #define SCREEN_TOP          (1)
 #define SCREEN_SUB          (0)
 
-#define SCREEN_HEIGHT_TOP   (240)
 #define SCREEN_WIDTH_TOP    (400)
-#define SCREEN_SIZE_TOP     (SCREEN_HEIGHT_TOP * SCREEN_WIDTH_TOP * 2)
-#define SCREEN_HEIGHT_SUB   (240)
+#define SCREEN_HEIGHT_TOP   (240)
+#define SCREEN_SIZE_TOP     (SCREEN_WIDTH_TOP * SCREEN_HEIGHT_TOP * 2)
 #define SCREEN_WIDTH_SUB    (320)
-#define SCREEN_SIZE_SUB     (SCREEN_HEIGHT_SUB * SCREEN_WIDTH_SUB * 2)
+#define SCREEN_HEIGHT_SUB   (240)
+#define SCREEN_SIZE_SUB     (SCREEN_WIDTH_SUB * SCREEN_HEIGHT_SUB * 2)
 
 #define FRAMEBUF_TOP_A_1    (VRAM_BASE)
-#define FRAMEBUF_SUB_A_1    (FRAMEBUF_TOP_A_1 + (SCREEN_WIDTH_TOP * SCREEN_HEIGHT_TOP * 2))
+#define FRAMEBUF_SUB_A_1    (FRAMEBUF_TOP_A_1 + SCREEN_SIZE_TOP)
 #define FRAMEBUF_TOP_A_2    (VRAM_BASE + 0x100000)
-#define FRAMEBUF_SUB_A_2    (FRAMEBUF_TOP_A_2 + (SCREEN_WIDTH_TOP * SCREEN_HEIGHT_TOP * 2))
+#define FRAMEBUF_SUB_A_2    (FRAMEBUF_TOP_A_2 + SCREEN_SIZE_TOP)
 
 #define RENDERBUF_TOP       (VRAM_BASE + 0x200000 - SCREEN_SIZE_TOP - SCREEN_SIZE_SUB)
 #define RENDERBUF_SUB       (VRAM_BASE + 0x200000 - SCREEN_SIZE_SUB)
diff --git a/source/arm11/hardware/gfx.c b/source/arm11/hardware/gfx.c
index 1105633..9f16f4c 100644
--- a/source/arm11/hardware/gfx.c
+++ b/source/arm11/hardware/gfx.c
@@ -295,7 +295,6 @@
 {
 	IRQ_registerHandler(IRQ_PDC0, 14, 0, true, gfxIrqHandler);
 	i2cmcu_lcd_poweron();
-	i2cmcu_lcd_backlight_poweron();
 }
 
 void GFX_deinit(void)
@@ -309,8 +308,10 @@
 	// Temporary Luma workaround
 	GX_memoryFill((u64*)FRAMEBUF_TOP_A_1, 1u<<9, SCREEN_SIZE_TOP + SCREEN_SIZE_SUB + 0x2A300, 0,
 	              (u64*)FRAMEBUF_TOP_A_2, 1u<<9, SCREEN_SIZE_TOP + SCREEN_SIZE_SUB + 0x2A300, 0);
-	*((vu32*)(0x10400400+0x70)) = 0x00080341;            // Format GL_RGB8_OES
-	*((vu32*)(0x10400400+0x90)) = SCREEN_HEIGHT_TOP * 3; // Stride 0
-	*((vu32*)(0x10400500+0x70)) = 0x00080301;            // Format GL_RGB8_OES
-	*((vu32*)(0x10400500+0x90)) = SCREEN_HEIGHT_SUB * 3; // Stride 0
+	*((vu32*)(0x10400400+0x70)) = 0x00080341;                 // Format GL_RGB8_OES
+	*((vu32*)(0x10400400+0x90)) = SCREEN_HEIGHT_TOP * 3;      // Stride 0
+	*((vu32*)(0x10400500+0x68)) = FRAMEBUF_SUB_A_1 + 0x17700; // Sub framebuffer first address
+	*((vu32*)(0x10400500+0x6C)) = FRAMEBUF_SUB_A_2 + 0x17700; // Sub framebuffer second address
+	*((vu32*)(0x10400500+0x70)) = 0x00080301;                 // Format GL_RGB8_OES
+	*((vu32*)(0x10400500+0x90)) = SCREEN_HEIGHT_SUB * 3;      // Stride 0
 }