Ubuntu 14.04 ignoring network settings performed in the UI?

unity networking 14.04 network-manager gui

5,724

Solution 1

I prefer to manage my interface through /etc/network/interfaces for static IP on eth0 you can set yours to

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
address 192.168.0.214
netmask 255.255.255.0
gateway 192.168.0.1
dns-nameservers 8.8.8.8
dns-nameservers 8.8.4.4

if you prefer to use the network manager GUI comment it our per @chili555 answer

Solution 2

I suggest you comment out your eth0 setting in /etc/network/interfaces thus:

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
#auto eth0
#iface eth0 inet dhcp

Restart the computer and you should be all set.

5,724

Edy Bourne

SOreadytohelp #SOreadytohelp

Updated on September 18, 2022

Comments

Edy Bourne over 1 year

I have installed Ubuntu 14.04 LTS Server, and then added a minimal desktop like so:

sudo apt-get install ubuntu-desktop --no-install-recommends

Then I complemented the install with the following packages so I could get a usable UI:

sudo apt-get install gnome-disk-utility gnome-terminal libpam-gnome-keyring 
libproxy1-plugin-gsettings libproxy1-plugin-networkmanager network-manager-gnome 
network-manager-pptp network-manager-pptp-gnome ttf-ubuntu-font-family xdg-utils 

sudo apt-get install unity-control-center unity-lens-applications unity-lens-files 
indicator-session indicator-power indicator-keyboard indicator-datetime 
indicator-sound indicator-application indicator-appmenu hud

It almost works perfectly. except for the network.

I configured a wired connection using fixed IP address GUI as follows:

enter image description here

But regardless, my IP is always chosen at random and the connection keeps showing as never used in the UI despite multiple reboots.

If I click on the networking icon and the in "Connection Information" I get the following:

enter image description here

ipconfig -a gives me this:

administrator@ci-server:~$ ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:0c:29:f2:c6:26  
          inet addr:192.168.0.22  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:fef2:c626/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4991 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3162 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:2295739 (2.2 MB)  TX bytes:479519 (479.5 KB)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:35233 errors:0 dropped:0 overruns:0 frame:0
          TX packets:35233 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:5458696 (5.4 MB)  TX bytes:5458696 (5.4 MB)

What am I missing? Did I forget any packages to make this UI work?

**UPDATE: ** This is my /etc/network/interfaces file:

administrator@ci-server:~$ cat /etc/network/interfaces
# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet dhcp

Thank you!

meccooll almost 10 years

Post your /etc/network/interfaces if that's configured it should overwrite network manager
Edy Bourne almost 10 years

It seems you got it! It is configured for dhcp... should I delete this file? Or just remove the configs for eth0?
Rmano almost 10 years

Is the connection marked as "system connection" in Network Manager (I think it is under "general")? And --- there is a very old bug (can't find the reference now) that require you to change the name of the connection and save it to have it really saved...