Comment 8 for bug 288281

same issue here using 8.10/Kubuntu

On resume from suspend, no network devices are present. e.g running ifconfig shows no device.

Running "sudo /etc/init.d/networking restart" does not bring the device back, I have to killall NetworkManager then start NetworkManager again. The device then appears in ifconfig and knetworkmanager reconnects after a pause.

Doing:
/etc/pm/config.d/local:
SUSPEND_MODULES="forcedeth"

Makes the network come back on resume, although I'm not using the forcedeth driver:

46: None 00.0: 10701 Ethernet
  [Created at net.124]
  Unique ID: usDW.ndpeucax6V1
  Parent ID: rBUF.rpgJzxSJjg5
  SysFS ID: /class/net/eth0
  SysFS Device Link: /devices/pci0000:00/0000:00:1c.5/0000:09:00.0
  Hardware Class: network interface
  Model: "Ethernet network interface"
  Driver: "tg3"
  Driver Modules: "tg3"
  Device File: eth0
  HW Address: 00:1d:09:59:8b:d7
  Link detected: yes
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #6 (Ethernet controller)