When starting orange pi, it happens that not all the RAM is available. That is, the orange pi has 2 GB of RAM and it is written that there is only 1 GB of RAM. This often happens when restarting using the reboot command. If you turn off the power and reconnect, this problem appears much less often.
When 2 gb is available: https://paste.armbian.com/asatebupuw
When 1 gb is available: https://paste.armbian.com/bohapeyahi