On Sat, 8 Nov 2014 20:44:48 +0100 Bruno Prémont <[email protected]> wrote:
> Hi, > > Since I have my Cubietruck, be it with 3.4 kernels or with mainline > kernels I've been experiencing unstable TCP connections. > > The symptoms are stalling connections (usually SSH connections to the > Cubietruck) that have nearly no chance at recovering. > > When I tell GMAC to only advertise up to 100Mbps speed the SSH > sessions do no show above symptoms anymore. > > > If it's important, my setup is: > > 100Mbps 1Gbps > Laptop ----------- Switch --------- Cubietruck > > > > Any idea what the cause might be and how to fix it? > > > When running wireshark on the laptop there is only silence when the > SSH session is stalled. Just prior to stalling Wireshark mentions > one missed packet (previous segment not captured) and no more packets > after this. Packet loss can explain stalled session, but I expect some retransmission after some time. The same problem is there whem the Cubietruck is connected directly to the laptop? Look also for kernel messages on Cubietruck. It's also possible that there is a problem like this: https://groups.google.com/forum/#!searchin/linux-sunxi/gmac$20bug/linux-sunxi/kmsn0cNm37o/M-wwVE6mhrcJ -- Diego Roversi <[email protected]> -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
