eth0 suddenly lost and won't come back

Bug #1506305 reported by Andrew
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
network-manager (Ubuntu)
New
Undecided
Unassigned

Bug Description

Seems that network manager crashed on a Lenovo laptop. Nothing shows in network manager panel expect "Enable networking"

Try toggling that and restart networking. Nothing. ifconfig only shows loopback

Add this to /etc/network/interfaces:

auto eth0
iface eth0 inet dhcp

Restart networking service and it comes on.

Restart PC and the connection is gone again but the manager dropdown now lists wlan and can connect on wlan as a workaround.

Still no eth0

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