I have a workaround that isn't particularly elegant but does the trick
for me: have the NetworkManager automatically restart at resume.
1. add file to /etc/pm/sleep.d/ , e.g. call it 99_restart-network-manager, and
make it executable
2. in the file, put
#!/bin/bash
case "${1}" in
resume|thaw)
restart network-manager
;;
esac
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Packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/1027202
Title:
Does not connect (to wired network) after suspend
Status in “network-manager” package in Ubuntu:
Triaged
Bug description:
I work with Xubuntu 12.04 on a MacBook Air 4,1. I can easily connect
to the internet (wired network / auto ethernet), but after I put the
laptop to sleep/suspend, nm-applet is gray and I can't connect to the
internet anymore. Rebooting solves the problem. This seemed to be
related up to the fact that it was a wireless connection (which always
worked fine for me): https://bugs.launchpad.net/ubuntu/+source
/network-manager-applet/+bug/704756
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: network-manager-gnome 0.9.4.1-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
Uname: Linux 3.2.0-26-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.0.1-0ubuntu11
Architecture: amd64
CRDA: Error: [Errno 2] No such file or directory
Date: Fri Jul 20 20:33:05 2012
EcryptfsInUse: Yes
InstallationMedia: Xubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
IpRoute:
default via 178.83.94.1 dev eth1 proto static
169.254.0.0/16 dev eth1 scope link metric 1000
178.83.94.0/23 dev eth1 proto kernel scope link src 178.83.94.48 metric 1
NetworkManager.state:
[main]
NetworkingEnabled=true
WirelessEnabled=false
WWANEnabled=true
WimaxEnabled=true
SourcePackage: network-manager-applet
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-dev:
DEVICE TYPE STATE DBUS-PATH
eth1 802-3-ethernet connected
/org/freedesktop/NetworkManager/Devices/2
eth2 802-3-ethernet unavailable
/org/freedesktop/NetworkManager/Devices/1
eth0 802-11-wireless unavailable
/org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE
WIFI WWAN-HARDWARE WWAN
running 0.9.4.0 connected enabled enabled
disabled enabled disabled
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