For some reason, tested with both Ubuntu and Bianbu, after I use the system a while, and shut down, I can’t get the system to boot back up beyond a certain point.
On both OSes, it’s the same:
[ 35.876480] ldo5: disabling
[ 221.642527] random: crng init done
I’ve let it sit for 20 minutes and it won’t progress any further.
After reading through this answer on Ask Ubuntu, I think this may be happening after I use this guide from RVspace to expand the boot partition out beyond 4 GB.
See also: answer to Debian hangs at boot with “random: crng init done”?.
In which case, maybe that’s damaging the swap partition, causing boot to stall here?
I decided to use the Milk-V docs guide for using gparted to resize the partition, and then shut down and booted the board again.
This time, it’s showing the message EXT4-fs mounting filesystem—so definitely something funny with the partition UUID or something like that, when I was using resize2fs and maybe messing with the partition signature in fdisk. Ah well… I would still like a CLI way of doing what gparted is doing.