I observe the same situation after upgrading from 11.10 to 12.04.
NetworkManager is not in the list of processes after boot and executing
"sudo NetworkManager" fixes the defect.
** Changed in: network-manager (Ubuntu)
Status: Expired => New
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https://bugs.launchpad.net/bugs/663735
Title:
NetworkManager is not running
Status in “network-manager” package in Ubuntu:
New
Bug description:
Binary package hint: network-manager
Ubuntu 10.04 LTS
On a regular Ubuntu 10.04 LTS (freshly installed), one has in the taskbar an
icon representing 2 thick arrows up and down,
On my portable, where Ubuntu 10.04LTS is present, but two months ago upgraded
from 9.04, I have only an icon representing
a wave with a red exclamation mark. With the mouse pointer on it, it shows in
a balloon text: Networking disabled.
Clicking on it, shows a balloon text with 'Network Manager not running
$ sudo service network-manager status
says: network-manager stop/waiting
$ sudo service network-manager start
says: network-manager, start/running, process 1981
but nothing is changed (still Networking disabled, NetworkManager not running
as above)
$ sudo service network-manager status
says again: network-manager stop/waiting
I can right click the icon and choose Edit connections ans change e.g. Method
and set other IP settings, but this
is not recorded (because NetworkManager is not running?)
I had a manually edited /etc/network/interfaces in the past.
I was advised to try putting in /etc/network/interfaces only
auto lo
iface lo inet loopback
auto eth0
which I did and rebooted, but
this was even worse: could not connect anymore to the internet AT ALL.
Just to be able to write this bug report, I had to manually edit my
/etc/network/interfaces again to
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp
and reboot
then a got a DHCP assigned IP again from our DHCP server over the local LAN
I believe already in 9.04, I had 'NetworkManager not running' and not the
normal icon in the taskbar (can't
remember exactly how that icon looked, things in Ubuntu change all the time
with every new upgrade (sigh) ...)
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: network-manager 0.8-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.32-25.44-generic 2.6.32.21+drm33.7
Uname: Linux 2.6.32-25-generic i686
Architecture: i386
CRDA: Error: [Errno 2] No such file or directory
Date: Wed Oct 20 10:23:06 2010
IpRoute:
143.129.75.0/24 dev eth0 proto kernel scope link src 143.129.75.178
169.254.0.0/16 dev eth0 scope link metric 1000
default via 143.129.75.254 dev eth0 metric 100
Keyfiles: Error: [Errno 2] No such file or directory
ProcEnviron:
LANG=en_US.utf8
SHELL=/bin/bash
SourcePackage: network-manager
WpaSupplicantLog:
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