| 
 | 
 
Hello 
I have two orangepi rk 3399.... one is dead... anyway...  I use android binary and 
 
I only use HDMI output...    I use orangepi rk 3399 with monitor. 
 
my question is 
1. orangepi rk3399 first display is LCD0 ... but I only use HDMI.  HDMI is not PRIMARY display.  
    and orangepi rk3399 only show kernel logo in PRIMARY DISPLAY. 
    - How to change Primary display  (LCD to HDMI)  
 
2. HOW to change u-boot logo and kernel logo. 
 
3. And HDMI output problem... when boot android... only select HD output for HDMI... 
    How to support 4K out in HDMI? 
 |   
 
 
 
 |