NetworkManager fails to configure wlan0 when /e/n/i contains "iface eth0 inet manual"
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
network-manager (Ubuntu) |
New
|
Undecided
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Unassigned |
Bug Description
Binary package hint: network-manager
I install Maverick (10.10) on a new computer. I boot it, and I don't get any network connectivity on the very first start. That is no good way of starting a new installation...
What seems to have happend is this:
In /etc/network/
auto eth0
iface eth0 inet manual
Combined with /etc/NetworkMan
[ifupdown]
managed=false
this effectively means that NetworkManager does not "see" eth0. For some reason, this seems to prevent the GNOME Network Manager applet to appear, even though I have a wireless card as well (which shows up in the NM applet after I fixed the eth0 problem).
This has happened on at least four computers, one desktop and one laptop, and also a co-worker on his laptop, and finally on a virtual installation in VirtualBox (to test this behaviour again). The co-worker found out one workaround, by changing the NM config file to "managed=true". I tried to remove the eth0 part of /etc/network/
There seems to be several issues at work here.
First of all, why did I get the eth0 stuff in my interfaces file during installation? (The major problem)
Second, why did this stop Network Manager from managing my wifi card?
I am happy to provide whatever extra information is needed to solve the bug.
All of these computers were connected on a company network which requires a proxy to connect to the outside world. I don't know if it is relevant, but it might be. Also, several people here (including me) have been using Ubuntu for a long time on this network, and this has never happened before, on anything between Jaunty and Lucid. And yes, we do have a DHCP server on the network.
When explicitely running "sudo dhclient" in a terminal from the live cd, dhclient hangs after:
DHCPREQUEST of ... on eth0 to 255.255.255.255 port 67
DHCPACK of ... from ...
This might or might not be related.