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I have deleted accedently the network manager from Ubuntu 13.04 on my HP pavilion 13.04. Now I am not able to connect to the internet using my laptop. I have downloaded the two .deb packages of network manager.

1: network-manager-dbg_0.9.8.0-0ubuntu6_amd64.deb 2: network-manager-gnome_0.9.8.0-1ubuntu2_amd64.deb

I have followed the instructions from the following site. Network manager deleted

But when I unpack the network-manager-gnome from the terminal, it says:

dpkg: dependency problems prevent configuration of network manager-gnome: network-manger-gnome depends on network-manager (>= 0.9.8); Package network-manager is not installed. dpkg: error processing network-manager-gnome (--install): dependency problems - leaving unconfigured

I also tried to install the network-manager package by double clicking on it, but the Software Center says:

New software cant be installed, there is a problem eith the software currently installed. Do you want to repair this problem now?

But there is no network access to do the repair.

What to do now????

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The command "sudo dpkg -i /var/cache/apt/archives/network-manager_*.deb" could be useful but the package is not present in the archives folder of ubuntu. –  Zuhran Oct 23 '13 at 11:20

1 Answer 1

No Network Manager doesn't mean that you can't connect to the internet. You just have to do it the good old way:

First bring your network interface up (assumed that eth0 is your network interface):

ifconfig eth0 up

Assumed that your network is configured via DHCP, you have to receive an ip address:

dhclient -v eth0

Then set a default route (assumed that your router has the ip 192.168.1.1):

route add default gw 192.168.1.1

From now on you should be connected (if nothing went wrong) you can try by pinging Google via ip address:

ping -c 4 195.13.189.35

Last but not least, set the dns-servers in /etc/resolv.conf (assumed that your dns-server is 192.168.1.1):

nameserver 192.168.1.1

Now you should be able to ping Google by name:

ping -c 4 www.google.com

If this works, you can reinstall NetworkManager via apt or Software Center.

apt-get install --reinstall network-manager

But, don't just copy & paste my commands, they are most likely not the same as yours. If something went wrong, please post the output of the commands.

Edit: If it's a wireless network interface (it's a bit tricky):

Just go sure it's up

ifconfig wlan0 down
ifconfig wlan0 up

You should see your wireless network interface with the command

iwconfig

If it is recognized as a wireless interface, you can scan the network with (assumed that your wireless interface is wlan0):

iwlist wlan0 scan

Then establish a connection to the essid:

iwconfig wlan0 essid "youressid"

Set the connection password:

iwconfig wlan0 key s:yourpassword 

Hope you get an ip:

dhclient -v wlan0 

Set the default route and the name servers as above.

share|improve this answer
    
The command "ifconfig" doesnot list the details of wifi interface card. –  Zuhran Oct 23 '13 at 12:42
    
Uh, with a wireless interface it's a bit more complicated, see my updated answer. –  chaos Oct 23 '13 at 13:13
    
While setting key for wireless network, the output is: Error for wireless request "Set Encode" (8B2A) : SET failed on device wlano; Invalid argument –  Zuhran Oct 23 '13 at 13:25
    
Your wrote wlano. That's wrong, type iwconfig to find out how your wireless interface is called, most likely wlan0 not wlano. –  chaos Oct 23 '13 at 13:35
    
Oh, sorry. Exactly, its wlan0 –  Zuhran Oct 23 '13 at 13:57

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