Hi!   I just booted Armbian_20.08_Rockpro64_focal_current_5.7.15.img via sdcard , but HDMI output seems to stop after "Starting Kernel". Just after that I see some yellow/black vertical lines on my monitor and then the screen goes black, no more HDMI input on the monitor.   Logging into Armbian on the RockPRO then works fine via ssh, can do the setup, update etc. So it looks like a problem with HDMI output?   Anyone ideas how to solve this? Would like to have consol