I am trying to boot armbian on the Pine64 clusterboard but I cannot get past a 'Starting kernel...' message on the serial console.   I am not able to boot either of the images from https://www.armbian.com/sopine-a64/#kernels-archive-all   I'm not sure if the serial is just turning off or the system is freezing. It does not connect to my router.   Here is the serial output for for 'focal' image.     Can anyone provide any advice for diagnosing/fixing