12.04.2 LTS, new install, network broken

[Tom H]

On Sat, Jul 6, 2013 at 1:45 PM, Liam Proven <lproven at gmail.com> wrote:
> On 6 July 2013 16:04, Gene Heskett <gheskett at wdtv.com> wrote:


>> I am in a catch-22 here. And very frustrate by what seems to be two of the
>> dumbest actions ever.  They are:
>>
>> 1. No networking when installing from the cd.  Yes, I have my local network
>> on 192.168.xx.nn, but apparently the installer cannot cope if the xx isn't
>> 00.  Inexcusable.
>
> It copes fine on my LAN, which is 192.168.1.xx. So it's not a nonzero
> 3rd octet; that works fine.

+1

> Do you have DHCP?

Is dhcp working?

(And what does "no networking" mean?)


>> 2. The gui tools to properly configure it are disabled because they refuse
>> to ask for a sudo password in order to modify the files.  So I am locked
>> ouyt of fixing it via the tools provided.  Also inexcusable.
>
> GNOME Network Manager (the thing in the panel) is a userspace program.
> It doesn't need root privileges.

Only if you want to make the connection available to all users.


>> I have copied all the networking configs over from a 10.04.4 LTS install,
>> but I still have no dns, only hostnames in the /etc/hosts file work.
>
> I would not expect that to work. Did you keep backups of any files you
> replaced? Can you revert this change?

What were the configs that were copied over?!

Please post the output of:

nm-tool

ip a

ip r

cat /etc/hosts

cat /etc/network/interfaces

cat /etc/nsswitch.conf

cat /etc/resolv.conf

ls -l /etc/resolv.conf

lsattr /etc/resolv.conf


>> Without a network I cannot update the machine, and without sudo -i access
>> to the gui the network tab on the top right bar can open, I cannot save any
>> changes I make to the network configuration.
>
> What does `sudo -i` do? I've never needed it.

sudo -i = sudo su -


>> And this bitch goes all the way back to the installer
>> not properly broadcasting to find out whats out there, so it can use it
>> during the install.
>
> Does for me. I use it all the time. Are you saying that even the
> LiveDVD could not access the network? This is a key question.

The installer's networking works perfectly well.