Resolving The Problem By Reinstalling The Ubuntu Network Manager

 

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If you’ve reinstalled Ubuntu Network Manager on your system, this article might help.

 

 

the answers

It is assumed that you had Internet access before you lost your network manager or other packages. CD / DVD / USB

Create

If You Are Using An Ubuntu Bootable CD / DVD, Also Known As A USB Stick, Also Boot From It And Select Try Ubuntu Without Installing. Once On Your Ubuntu Personal PC, Open A Terminal.

Root section

Finally, you must define the root partition associated with your Ubuntu installation. In a standard Ubuntu installation, / dev / sda1 was the root partition, but it can be split for you. To find out what the root partition is, run the following fdisk command:

  sudo -l 

This will give you a reliable list of hard drives and wall areas that you should use to determine which partition is the root cause. Below in step 3, the root partition is the root partition, but you found it, for example, / dev / sda2 in some of my cases.

Chroot To Root Section

To get a specific section that is this root section, you can mount it. So let’s mount the base partition with / sys, / proc, / run, and therefore / dev, and define a chroot:

  sudo mount ROOT-PARTITION / mntfor me again in / sys / proc / run / dev / dev / pts; run sudo mount --bind "$ i" "/ mnt $ i"; didsudo clubpinguin /etc/resolv.conf/mnt/etc/sudo chroot / mnt 

If you encounter a copy error like this, this resolv.conf file is similar, just ignore it. Copying resolv.conf makes the network workthief, at least for me (with DHCP).

Update / Install Packages

You can now update the platform – in a terminal of the same type:

  update apt-getapt-get upgradeapt-get install network manager network manager-gnome 

If anyone is having trouble with the latter concept, make sure your sources in /etc/apt/sources.list are optimal – in a terminal of the same type:

  sudo nano /etc/apt/sources.list 

Since you acquired it in your chrooted installation, the transformations you make will affect Ubuntu and probably not the Live CD if all changes are done in the same terminal session.

When finished, reboot and remove the Live CD. If our answer solves your problem, please post it correctly. Thanks !

Unfortunately, I removed network-manager-gnome and bought sudo apt-get remove --purge network-manager . When my husband and I tried to reinstall without internet connection, I was unable to do so. What’s the solution for this?

Best Answer

  sudo dhclient eth0 

  sudo apt-get attach network-manager 

WICD (pronouncedas “almost certainly means”) an open source network manager for Linux that wants to provide a simple interface – connecting to networks with different settings. It only supports wired and cellular phone networks (no fancy VPNs, DSL forwarding, etc.), but it’s a viable alternative if NetworkManager is a problem for you.

For Gnome / Unity

Ubuntu 18.04.1 and later

For Ubuntu 18.04.1 and later, it is not possible to uninstall network-manager without uninstalling ubuntu-desktop . Follow AskUbuntu instructions, from now on we can disable network manager like this:

 sudo systemctl stop NetworkManager.servicesudo systemctl disable NetworkManager.servicesudo systemctl stop NetworkManager-wait-online.servicesudo systemctl disable NetworkManager-wait-online.servicesudo systemctl stop NetworkManager-dispatcher.servicesudo systemctl disable NetworkManager-dispatcher.servicesudo systemctl stop network-manager.servicesudo systemctl disable network-manager.service 

Older Versions

• We need to download the latest version of the main NetworkManager first in case we want to do a fresh install if WICD doesn’t do its job:

  • sudo apt-get install -d --reinstall network-manager network-manager-gnome

• Then you need to install, this works WICD:

  • sudo apt-get install wicd-gtk

• Next, we’re going to remove NetworkManager:

  • sudo apt-get remove network-manager-gnome network-manager

• After everything is confirmed for it to work (preferably after a reboot, check the following), you can delete the Lime config files for NetworkManager:

  • sudo dpkg - -purge network-manager-gnome network-manager

For KDE (Kubuntu)

• 

  First of all, we need to download the latest version of NetworkManager for free if I really need to do a fresh install when WICD starts up frequently:

  • sudo apt-get install -d --reinstall network-manager Plasma-widget-networkmanagement

• Then we have to
  straight. install

  • sudo apt-get install wicd-kde wicd:

• Uninstall NetworkManager as follows:

  • sudo apt-get remove Plasma-widget-networkmanagement network manager

• Once everything is working (better check after restart), you can delete the config files for NetworkManager:

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