Comment 6 for bug 1489412

There are a lots of variables here: can we reduce the communication channels? Like, can we test the communication on serial only? Then move to ethernet only, etcetc

Moreover, which kernel versions does Debian use? 3.18.x?
We could create an rpi2 kernel with the debian config and see if that improves the situation - if it does, it's a config difference between the two, if it doesn't, we continue digging.

Another simple test that you can try: have you tried booting a snappy rpi2 image with that debian kernel? Does it perform as expected?