Pine A64+ Gigabit issue...

[waldo]

...

I had just hypothesized with someone else that it might be a hardware issue and was going to test with another board this week.

thank you

I can't think of any other reason for the difference in behavior between the two boards but a hardware difference/fault.
That being said, I hope that the working boards are actually working on the margin of what's acceptable, and that its just a recalibration problem in the driver/kernel.

http://forum.pine64.org/showthread.php?t...9#pid15449
"For reliable Gigabit networking (1000Mbit operation), several sunxi devices require an important tweak that adjusts the relative timing of the clock and data signals to the PHY, in order to compensate for differing trace lengths on the PCB."

thinking out-loud; this could mean that there is a marginal error on some of the boards in the timing of the 4 extra wires used in GbEthernet vs FastEthernet. Which it appears can be fixed with some tweaking .... I'm not ready to give up yet on this wonky eth port