Jim, I "solved" the issue by disabling gigabit ethernet on the network
card with:
$> sudo ethtool -s eth0 speed 100 duplex full
This command has to be run on startup.
Here's the relevant lshw -c if you're still interested, run after the
above fix:
description: Ethernet interface
product: JMC250 PCI Express Gigabit Ethernet Controller
vendor: JMicron Technology Corp.
physical id: 0.5
bus info: pci@0000:02:00.5
logical name: eth0
version: 03
size: 100Mbit/s
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm pciexpress msix msi bus_master cap_list ethernet
physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=jme
driverversion=1.0.8 duplex=full ip=192.168.1.2 latency=0 link=yes multicast=yes
port=MII speed=100Mbit/s
resources: irq:45 memory:feaf8000-feafbfff ioport:dc00(size=128)
ioport:d800(size=256)
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https://bugs.launchpad.net/bugs/1310798
Title:
JMicron JMC250 ethernet: networking always disconnected
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