(07-13-2016, 02:13 PM)waldo Wrote: I have 1 Pine64+ 2GB that has this problem. Another one that is working perfectly fine with the same powersupply, SD-card, ethernet cable and switch.
ATM i attached a USB network card as a workaround, its stable, but does only 100mbit...that raspberry feeling ......
Tried another switch, to no avail.

The issue reminds me of my Odroid-c1, I bought it way back when it was just released. Their gigabit port was also flakey. In the end it was fixed via patched to the kernel. Difference is that everyone had the same issue. I have the problem on 1 pine only.

Anyway ....I noticed in the thread that a lot of people have the problem after starting apt-get commands, while monitoring current consumption i saw the current spike well above 1A (idle @ 0.3A), so the load apt-get is generating might indeed cause a power issue.

I'll try powering from the euler connector tomorrow. since IIRC micro-USB connectors are only rated to 1.8A, I'll update later

(07-13-2016, 03:11 PM)rhkean Wrote:

(07-13-2016, 02:13 PM)waldo Wrote: ...

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

Quote:http://forum.pine64.org/showthread.php?tid=597&pid=15449#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."

(07-13-2016, 06:51 PM)waldo Wrote:

(07-13-2016, 03:11 PM)rhkean Wrote:

(07-13-2016, 02:13 PM)waldo Wrote: ...

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.

Quote:http://forum.pine64.org/showthread.php?tid=597&pid=15449#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