From 65ce0303f88ecb42a7503023e73222d67aeb1d28 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <github@thinkyhead.com>
Date: Tue, 13 Mar 2018 04:54:23 -0500
Subject: [PATCH] Fix MKS_12864_OLED blank issue

Fixes #10071
---
 Marlin/src/lcd/ultralcd_impl_DOGM.h | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/Marlin/src/lcd/ultralcd_impl_DOGM.h b/Marlin/src/lcd/ultralcd_impl_DOGM.h
index 6d4910a1fb..84c9379680 100644
--- a/Marlin/src/lcd/ultralcd_impl_DOGM.h
+++ b/Marlin/src/lcd/ultralcd_impl_DOGM.h
@@ -364,23 +364,26 @@ void lcd_printPGM_utf(const char *str, uint8_t n=LCD_WIDTH) {
 // Initialize or re-initialize the LCD
 static void lcd_implementation_init() {
 
+  #if PIN_EXISTS(LCD_BACKLIGHT) // Enable LCD backlight
+    OUT_WRITE(LCD_BACKLIGHT_PIN, HIGH);
+  #endif
+
   #if ENABLED(MKS_12864OLED) || ENABLED(MKS_12864OLED_SSD1306)
     SET_OUTPUT(LCD_PINS_DC);
     OUT_WRITE(LCD_PINS_RS, LOW);
-    delay(1000);
+    _delay_ms(500);
     WRITE(LCD_PINS_RS, HIGH);
   #endif
 
-  #if PIN_EXISTS(LCD_BACKLIGHT) // Enable LCD backlight
-    OUT_WRITE(LCD_BACKLIGHT_PIN, HIGH);
-  #endif
-
   #if PIN_EXISTS(LCD_RESET)
     OUT_WRITE(LCD_RESET_PIN, LOW); // perform a clean hardware reset
     _delay_ms(5);
     OUT_WRITE(LCD_RESET_PIN, HIGH);
     _delay_ms(5); // delay to allow the display to initalize
-    u8g.begin(); // re-initialize the display
+  #endif
+
+  #if PIN_EXISTS(LCD_RESET) || ENABLED(MKS_12864OLED) || ENABLED(MKS_12864OLED_SSD1306)
+    u8g.begin();
   #endif
 
   #if DISABLED(MINIPANEL) // setContrast not working for Mini Panel