Just because your power supply works with another board does not mean it has to work for this board. There are no general crashes or issues in the Ubuntu image which lead to Kernel crashes which i am aware of. The most likely reason is the PSU for both of you. If you have problem use a very short (like 15cm) USB cable.
Btw, from the boot log above i see that this is a 2GB Pine64. As i do not have one of those, i am willing to consider the possibility that there is an issue. So @Luke you are on 2GB model as well?
Btw, from the boot log above i see that this is a 2GB Pine64. As i do not have one of those, i am willing to consider the possibility that there is an issue. So @Luke you are on 2GB model as well?