Comment 0 for bug 1034264

I have set-up a bridge (br0) on eth0 of my laptop, as I'm using KVM from time to time.

This is the content of /etc/network/interfaces:

aaa@xxx:~$ cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

#
auto eth0
iface eth0 inet manual

auto br0
iface br0 inet dhcp
 bridge_ports eth0
 bridge_stp off
 bridge_fd 0
 bridge_maxwait 0

My problem is, if I boot WITHOUT a live connection plugged into the ethernet port of my laptop, NetworkManager sees my WiFi as "disabled by a hardware switch". As such, I can't use WiFi when there's no LAN. I can use WiFi when there's a LAN connection present, but it defeats the purpose of having a WiFi connection.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: network-manager 0.9.4.0-0ubuntu4.1
ProcVersionSignature: Ubuntu 3.2.0-27.43-generic 3.2.21
Uname: Linux 3.2.0-27-generic x86_64
NonfreeKernelModules: wl fglrx
ApportVersion: 2.0.1-0ubuntu12
Architecture: amd64
CRDA: Error: [Errno 2] No such file or directory
Date: Wed Aug 8 13:35:08 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
IpRoute:
 default via 192.200.2.252 dev br0
 10.88.88.0/21 dev br0 proto kernel scope link src 10.88.93.229
 192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
 192.200.2.0/24 dev br0 proto kernel scope link src 192.200.2.8
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
ProcEnviron:
 LANGUAGE=en_PH:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_PH.UTF-8
 SHELL=/bin/bash
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.NetworkManager.NetworkManager.conf: 2012-06-28T15:41:09.106173
nmcli-con:
 NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY DBUS-PATH
 Moldex.Group fa0e4888-b65b-4bf8-b559-d50a8d6144df 802-11-wireless 0 never yes no /org/freedesktop/NetworkManager/Settings/2
 SMVT 147d6502-8b9e-4730-8015-ac2583d7b8f4 802-11-wireless 1343604463 Monday, 30 July, 2012 07:27:43 AM PHT yes no /org/freedesktop/NetworkManager/Settings/1
 Wired connection 1 9550c743-1ea4-4c2b-84dd-ff3800765cea 802-3-ethernet 1340869202 Thursday, 28 June, 2012 03:40:02 PM PHT no no /org/freedesktop/NetworkManager/Settings/0
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH
 eth0 802-3-ethernet unmanaged /org/freedesktop/NetworkManager/Devices/1
 eth1 802-11-wireless disconnected /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 enabled enabled disabled