Same Problem here with Lenovo Y580:
*-network
description: Ethernet interface
product: AR8161 Gigabit Ethernet
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:02:00.0
logical name: eth0
version: 08
serial: 20:89:84:29:52:b3
size: 100Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi msix bus_master cap_list
ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=alx
duplex=full ip=192.168.0.120 latency=0 link=yes multicast=yes port=twisted pair
speed=100Mbit/s
resources: irq:31 memory:d3600000-d363ffff ioport:2000(size=128)
I'm running kernel version: Linux lap 3.19.0-21-generic
#21~14.04.1-Ubuntu SMP Sun Jun 14 18:45:42 UTC 2015 x86_64 x86_64 x86_64
GNU/Linux
workaround from Comment #12 worked - thanks!
Set the MPU
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https://bugs.launchpad.net/bugs/1458208
Title:
AR8161 ethernet stopped working after upgrade from 3.19.0-16 to
3.19.0-18
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