Hi Andres, thank you for your investigations ! it was quite clear for me from the beginning that this problem may depend on a particular combination of NIC models and/or switches in between.
However, I would definitely not characterize what I see as a loss of performances in powersave mode, as the machine behaves normally (not packet lost, normal ping time etc...) both in normal (auto-neg advertised) and in powersave mode (auto-neg not adevertised). What I see is the fact that *just right when a transition occurs* (normal -> powersave or powersave -> normal), then the NIC just drops all packets for about 18 sec. Just like if you pull the network plug for that same amount of time. That of course disturbs established connections, apparently beyond whatever recovery mechanisms in place (TCP retransmit etc..) can cope with. I will try to make some further test and keep you informed if I get anything interesting. I will particularly look closer at the duplex settings. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/730210 Title: SSH connection killed by eth_speed script [natty] -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
