Merge pull request #6363 from dot-bob/display_reset

Identifed a display initialization issue.

Author: thinkyhead

Marlin/ultralcd_impl_DOGM.h

@@ -240,15 +240,19 @@ void lcd_printPGM(const char* str) {
   for (; char c = pgm_read_byte(str); ++str) lcd_print(c);
 }
 
-// Initialize or re-initializw the LCD
+// 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 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 DISABLED(MINIPANEL) // setContrast not working for Mini Panel