systemd: show all kernel messages on console
Add these the following to your kernel bootargs in your bootloader configuration (u-boot, grub, or whatever) to ensure all kernel messages (even debug level) get displayed on your console. The one about forwarding is probably not needed, but this works well enough for me.
ignore_loglevel systemd.journald.forward_to_console=1 systemd.log_target=console systemd.show_status=false