> Date: Mon, 13 Aug 2018 08:17:46 -0700 > From: Jon Tabor <tab...@obsolete.site> > > I have -current loaded on a Banana Pro board, and was experimenting with > using it as the router/firewall for my home network. I added a USB > ethernet dongle (ure(4)), and set up pf, etc. > > It seemed to work well, but I was seeing some occasional slowness and > certain services failed to load entirely. This was most noticeable with > my Roku device, where it would never load the channel store and a few > other items (though streaming video worked 99% of the time). > > After much packet tracing with tcpdump, I found that there were a huge > number of tcp retransmissions, indicating packet loss. > > I was thinking the issue was with the ure(4) device, so I threw another > one in the mix, this time a tried-and-true axe(4) device. Same issue. > > Eventually, I hit upon removing the dwge(4) from the mix entirely, and > just using the ure(4) and axe(4) devices. That seemed to fix things, > and now everything works as expected. > > So it appears that the dwge(4) device isn't terribly reliable, at least > on my particular board. > > Has anyone else experienced this? Anything I can do to troubleshoot?
I have not seen any problems on my Banana Pi (the SinoViop variant), which has the same SoC. But I don't really push it that hard. We have seen issues with some U-Boot versions on some boards. Don't really remember if the was on an Allwinner A20 board though. What U-Boot version are you using? And does your U-Boot include support for the Ethernet interface? A complete log of the boot process would be helpful. Another potential issue is a bad power supply. I have seen reliability issues on many boards that are fed through a micro-USB port, especially when I add USB peripherals. Apparently the voltage drops below what some of the components on these boards accept if you put too much load on the power supply. If you use a separate cable, make sure it is of decent quality and not too long! Cheers, Mark
