maintenance mode (display logic adjustment)

src/display.cpp

@@ -159,7 +159,7 @@ void dp_init(bool verbose) {
 #if !(BOOTMENU)
       delay(8000);
 #endif
-      dp_contrast(DISPLAYCONTRAST);
+     
 #endif // HAS_LORA
 
     } // verbose

src/main.cpp

@@ -540,6 +540,8 @@ void setup() {
 
   // set runmode to normal
   RTC_runmode = RUNMODE_NORMAL;
+  dp_clear();
+  dp_contrast(DISPLAYCONTRAST);
 
   vTaskDelete(NULL);