How to reinstall network manager without internet access?

Question

Unfortunately, I uninstalled network-manager-gnome using sudo apt-get remove --purge network-manager. I was trying to reinstall it from but without internet connection I cannot do so. What is the solution for this?

score 69 · Answer 1 · answered Apr 08 '16 at 16:18

69

sudo dhclient eth0

then you will have internet and you can use...

sudo apt-get install network-manager

answered Apr 08 '16 at 16:18

kim

691

score 25 · Answer 2 · edited Jan 19 '16 at 10:28

If you've recently upgraded your network manager you can use sudo apt-get install --reinstall network-manager, but this only works if the package is still in your Apt cache (/var/cache/apt/archives/). I'm guessing you haven't so you'll have to do things the long way, but I thought I'd throw that in just in case.

Boot a Ubuntu live CD in "Try without installing". Make sure you are connected to the internet.
In terminal type:
```
sudo mount --bind /dev /<chrootlocation>/dev
sudo mount --bind /proc /<chrootlocation>/proc
sudo mount --bind /sys /<chrootlocation>/sys
sudo cp /etc/resolv.conf /<chrootlocation>/etc/resolv.conf
sudo chroot /<chrootlocation>
```
You will need to replace <chrootlocation> with the appropriate location of your Ubuntu install, typically the label of the partition it's installed on. The partition must also be mounted so that you can access it.
Edit your /etc/resolve.conf and add at least one nameserver:
```
nameserver 8.8.8.8 # Google Public DNS
```
In terminal type:
```
sudo apt-get update
sudo apt-get install network-manager
```
If you don't you'll likely get an unable to connect error.
In terminal type exit. This exits you from the chroot environment.
In terminal type sudo reboot to reboot your computer.

score 14 · Answer 3 · answered Feb 01 '16 at 17:22

This answer assumes that you had internet access before losing network-manager or any other packages.

Live CD/DVD/USB

Create a bootable Ubuntu CD/DVD or USB stick, boot from it and select "Try Ubuntu without installing". Once you get to the Ubuntu desktop, open a terminal.

Root Partition

You need to find out your root partition on your Ubuntu installation. On a standard Ubuntu installation, the root partition is "/dev/sda1", but it may be different for you. To figure out what's the root partition, run the following command:

sudo fdisk -l

This will display a list of hard disks and partitions from which you'll have to figure out which one is the root partition. Below in step 3, ROOT-PARTITION is the root partition you just found, for example /dev/sda2 in my case.

Chroot Into Your Root Partition

To make sure a certain partition is the root partition, you can mount it. So let's mount the root partition along with the /sys, /proc, /run and /dev partitions and enter chroot:

sudo mount ROOT-PARTITION /mnt
for i in /sys /proc /run /dev /dev/pts; do sudo mount --bind "$i" "/mnt$i"; done
sudo cp /etc/resolv.conf /mnt/etc/
sudo chroot /mnt

If you get an error about resolv.conf being identical when copying it, just ignore it. Copying resolv.conf gets the network working, at least for me (using DHCP).

Update/Install Packages

Now you can update the system - in the same terminal, type:

apt-get update
apt-get upgrade
apt-get install network-manager network-manager-gnome

If you have problems on the last step, make sure your sources are correct in /etc/apt/sources.list - in the same terminal, type:

sudo nano /etc/apt/sources.list

Since you've chrooted into your Ubuntu installation, the changes you make affect it and not the Live CD, as long as all changes are made in the same terminal session.

Reboot when finished and remove the Live CD. If this answer fixes your problem, please mark it correct. Thanks!

score 7 · Answer 4 · edited Feb 19 '14 at 09:23

sudo apt-get remove --purge network-manager

The above command will purge all the packages that was related to the service network-manager.You can download all packages as .deb file using a Ubuntu Live disk and then install it to your original OS.

First boot from a Ubuntu Live disk.
Once you go there open a terminal and run the below command,
```
sudo apt-get download network-manager*
```
This will download all the network-manager packages to the home directory.
Now copy all the .deb packages to a folder in that pen drive or other partitions in your HDD and then reboot to your system.

Once you go there open terminal and do the following:

cd /path/to/the/directory/where/.deb/files/are/located
sudo dpkg -i *.deb

The above command will install all the .deb files.
Now restart your network-manager by running sudo service network-manager restart

Now you have the package network-manager-gnome running again.

score 7 · Answer 5 · edited Jun 26 '18 at 09:52

Just solved this same problem, follow these simple steps:

Download network-manager in a device having internet connection from http://security.ubuntu.com/ubuntu/pool/main/n/network-manager/
I used network-manager_1.2.2-0ubuntu0.16.04.4_amd64.deb for ubuntu16.04
Then transfer this file using USB or phone etc.
$ sudo dpkg -i network-manager_1.2.2-0ubuntu0.16.04.4_amd64.deb

It may happen that the wifi shortcut might be missing on the top, for that just use this command

sudo apt-get install ubuntu-desktop and then a normal restart of your machine.

Done :)

score 5 · Answer 6 · answered Dec 13 '15 at 12:55

Follow official Ubuntu communuty LiveCdRecovery Update Failure section: (https://help.ubuntu.com/community/LiveCdRecovery):

Boot the Ubuntu Live CD.
Press Ctrl-Alt-F1

Run:

sudo mount /dev/sda1 /mnt
sudo mount --bind /dev /mnt/dev
sudo mount --bind /proc /mnt/proc
sudo mount --bind /sys /mnt/sys
sudo chroot /mnt

Add OpenDNS name servers to your /etc/resolv.conf to access the network after chroot:
```
nameserver 208.67.222.222
nameserver 208.67.220.220
```
Run:
```
apt-get install network-manager
```

This helped to fix the same issue on my Ubunty 14.04LTS

score 4 · Answer 7 · answered Dec 30 '15 at 12:21

I know I'm a little late on this but I just ran into this same problem. I installed arping (sudo apt-get install arping) which removed iputils-arping, network-manager, and network-manager-gnome. I edited the /etc/network/interface file to setup a manual IP for eth0.

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

# below are my changes

auto eth0
iface eth0 inet static
    address x.x.x.x
    gateway y.y.y.y
    netmask z.z.z.z
    network a.a.a.a
    broadcast b.b.b.b
    dns-nameserver c.c.c.c d.d.d.d

Change x, y, z, a, c, and d to your network settings. I then ran "sudo service network-interface restart INTERFACE=eth0" to restart the interface. This allowed my to reinstall network manager (sudo apt-get install network-manager). I had to purge the arping package I installed before network manager would reinstall. Then start network manager (sudo service network-manager start). Once I had network manager running I changed /etc/network/interface back to default (and kept a copy of the manual change just in case). Hopefully this helps.

mango · Answer 8 · 2014-02-19T07:05:48.210

My previous answer assumes that the reason you cannot access the internet is because you uninstalled "network-manager", and that normally the computer is connnected to the internet. However on the off chance that I read your question wrong, and this is in fact a computer that isn't ever connected to the internet you will need to use this answer instead though it will be more time consuming.

Step #1 = On another computer (It can be running Windows, doesn't matter), go to "http://packages.ubuntu.com/precise/network-manager". (This link assumes you are using Ubuntu 12.04, if not you will need to find the link appropriate to your version).

Step #2 = At the bottom of the web page there is a link for "amd64" and "i386", click on the approriate one. I'm using amd64 so my steps will assume that.

Step #3 = On the new page there are a bunch of mirror links that are direct download links for "network-manager_0.9.4.0-0ubuntu3_amd64.deb". Pick a link, and download the .deb file.

Step #4 = On the first url I provided it also lists the dependencies for network-manager. You may have some of these still installed, but for the ones you don't you will need to download them as well by visiting their page and selecting a mirror.

Step #5 = Once you've downloaded all the .debs you will be needing transfer them to the Ubuntu computer and put them in "/var/cache/apt/archives". You will need root privileges to do this which can be achieved with "gksu nautilus /var/cache/apt/archives". You could also use dpkg to install them, but it won't tell if you've forgetten a dependency so I'm not going to get into how to use that.

Step #6 = In terminal type "sudo apt-get install --reinstall network-manager".

score 1 · Answer 9 · answered May 07 '18 at 13:52

A newbies successful answer 16.04LTS Was having trouble with network manager slowing/disconnecting with new internet provider Rashly, decided to switch back to wicd and removed network manager via command line Found couldn't get wicd working (stupidly wasn't finding any networks anyway)

Solution First downloaded appropriate network manager deb file on another computer (32bit/i386 for me)(mine was network-manager_1.2.2-OubuntuO,16.04.4_i386.deb) moved file across to ubuntu system laptop using memory card

took time to find out the following - simply double clicked on transferred deb file (on my desktop) and it installed itself (had major problems using the command line)

internet now connected - but not perfect - no icon

so I updated using command: sudo apt-get update Then install NetworkManager: sudo apt-get install network-manager-gnome network-manager

Once rebooted, t his appears to have given me back my icon and full network manager operation

Hope this is helpful for you as it was for me step 1 - get the correct networ-manager deb file from packages website (mine was network-manager_1.2.2-OubuntuO,16.04.4_i386.deb) move it to you ubuntu computer - double click it and install step 2 update and (re)install network manager via command line/terminal, and get missing parts, problems and updates sorted. good luck

score 1 · Answer 10 · answered Jan 31 '19 at 08:44

I also needed to install network-manager without the internet. I got the idea from another post to add the cdrom: [Ubuntu install DVD/CD] to the software sources in Software and Updates on the 'Other Software' tab. The cdrom source was already listed but not checked so I checked it. Then I used Synaptic Package Manager to install 'network-manager'. I guess I could have used Ubuntu Software instead. This worked for me in Ubuntu 18.10

score 1 · Answer 11 · edited Feb 27 '22 at 02:49

I had the same problem on a Ubuntu 20.04 installation. This was on a desktop machine, without WiFi. The dhclient thing did not work for me. So I managed to set a fixed IP. You need to know your router IP, and a free IP on your network (example done as root, # is the prompt)

First figure out what your device name is:
```
# lshw -C network | grep "logical name"
```
If you have multiple network ports, if you don't know which one to use experiment with each one.
Create a static IP
```
# ip addr add 192.168.1.123/24 dev yourdevname
```
where yourdevname is taken from the lshw logical name
Add a default gateway route
```
# route add default gw 192.168.1.1
```
Note that you need to know the IP of your router
Edit /etc/resolv.conf and add/change/set it to the following two lines (backup old file if you like)
```
nameserver 8.8.8.8
nameserver 9.9.9.9
```
You can use different IP addresses if you know your DNS server IP. The above two listed should get you going.

That's it, hopefully you have full internet access again.

score 0 · Answer 12 · answered Nov 15 '24 at 13:54

To solve this problem, I booted from a Ubuntu Live USB Stick with the same Ubuntu version as my main system. My main system was automatically mounted. I then created a new directory on this mount and downloaded all the necessary packages for the missing package (in my case, network-manager-gnome) using an answer from this askubuntu question.

cd <mount_directory>
sudo mdkir PACKAGES
cd PACKAGES
sudo apt-get download $(apt-cache depends --recurse --no-recommends --no-suggests --no-conflicts --no-breaks --no-replaces --no-enhances --no-pre-depends network-manager-gnome | grep "^\w")

(In case you need a package different from network-manager-gnome, you need to replace it in the previous command.)

Next, I rebooted my main system in recovery mode and installed all the deb files:

cd PACKAGES
sudo dpkg -i *.deb

Hope this helps.

score 0 · Answer 13 · answered Oct 15 '17 at 17:49

For me, it turned out that I accidentally deleted /etc/resolv.conf and then got the same symptoms (nslookup nba.com doesn't work, but nslookup nba.com 4.2.2.4 does work, when 4.2.2.4 was configured as my DNS server).

Restoring the file from a live USB solved the issue.

score -1 · Answer 14 · answered Oct 27 '15 at 12:51

-1

Manually configure your ethernet card in /etc/network/interfaces and restart the networking service. Then apt-get update.

answered Oct 27 '15 at 12:51

Jan

1

How to reinstall network manager without internet access?

14 Answers14

Live CD/DVD/USB

Root Partition

Chroot Into Your Root Partition

Update/Install Packages

Linked

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