Questions tagged [network-manager]

NetworkManager is the default networking suite for Ubuntu. It is a set of co-operative tools developed by GNOME. The NetworkManager service can be controlled using the nmcli tool (Network Manager Command Line Interface) as well as by its GUI.

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Network connection fails (sometimes) to activate on startup

Since I have installed Ubuntu 20.04 on my desktop PC, I keep experiencing a strange problem with network connectivity: sometimes, after the OS completes the boot process and I'm presented with the ...
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Wifi keeps dropping on Ubuntu 20.04 after every dhcp renewal period. How do i fix it?

I recently ran a dist-upgrade from 18.04 to 20.04. Now, my wifi keeps dropping for no reason. The NetworkManager still shows that I am connected. But I lose connection. It seems like it happens ...
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How to fix? Netgear A6210 USB causing Ubuntu 20.04.1 Network Manager toFreeze

Whenever the Netgear A6210 usb wifi adapter is plugged in it appears to crash NetworkManager and pretty much anything that might rely upon it. I have been using the same wifi adapter in versions 18.04 ...
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Network manager , settings ,terminal stopped working

Recently my wifi and ethernet connections are lost in ubuntu 20.04.1 LTS and its saying no network manager and contact your software vendor. But yesterday everything was running okay. Now my terminal ...
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Every network related command freezes

My desktop computer is dual-booted with Windows and Ubuntu 18.04. Ubuntu has been working without issues for a while now. All of a sudden, the wifi would no longer connect (I'm using a netgear USB ...
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OpenConnect VPN via NetworkManager: invalid default route, still using local gateway?

I'm using network-manager-openvpn to connect to my university VPN. The VPN works when I just run openconnect -u username vpn.host.edu from the commandline (although it spews a lot of ip route error ...
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Wired internet and Wi-fi are not working Ubuntu 20.04.01 LTS

I'm confused about status of my adapters (UNCLAIMED) and I guess that I have to configure netplan yaml file but I don't know the way I have to do it. Please help the result of: lshw -class network the ...
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Why am I seeing two nm-applets in Xubuntu panel?

Here is the screenshot of it. I am seeing this problem after I rebooted my PC. Xubuntu Version 20.04.1
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Network Oddities since upgrading from 18.04 -> 20.04 (Persistent DHCP)

Apologies if this has been beaten to death. I've done about 6 hours of searching and testing myself and pulling my hair out. After a backup, I reluctantly agreed to upgrade from 18.04 to 20.04. Aside ...
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How to Bridge a Wifi Connection to a wireless access point through ethernet [closed]

Today i am faced with a perplexing problem regarding network bridges in linux mint 20.O. I want to share my wifi connection to a wireless access point while simultaneously allowing me to create a file ...
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a user installed network manager, and it messed up netplan

So a user install network manger with "sudo snap install networkmanager" this killed the netplan config, so he used the console to remove networkmanager again. With sudo snap remove ...
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nameserver change breaks server

I am using Ubuntu 20.04.1 LTS. I have very limited knowledge on how to set the network configuration after the installation of the server. I run a small subnet with one static IP server on it next to ...
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Some websites can't be reached(occasionally)

I occasionally(5-10 times a day) face this issue. Some of the websites are not reachable and I get the following screen. Here are a few things related to this problem. This happens with some website,...
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Network Manager crash out of nowhere Ubuntu 20.04

Basically, once in a while, the Network Manager dies out of nowhere. The computer still seems connected to the wifi but it says there is no connection to the internet; When I try to open the wifi ...
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Ubuntu 20.04. Two network cards. Netplan. Can't configure in parallel

I have a problem. There is a server. It has two network cards installed. Logically, one network card (enp4s0) for the Internet. Second network card (enp2s5) for network users to access the server (...
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Ethernet cable unplugged setting after suspend - Ubuntu 20.04

Reference: Ubuntu 18.04 - Ethernet disconnected after suspend When waking up from 'suspend', the wired Ethernet connection is not working. In the Network section of Settings it says that the cable is ...
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Can't connect my internal network adapter

I have a project in which I have pfsense virtual machine & Ubuntu 20.04 virtual machine on Oracle virtual box. My problem is when I open my Ubuntu with one adaptor set as nat and another as ...
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How to make 'notify-send' work in a script that is ran by NetworkManager dispatcher?

Code: #!/bin/bash sleep 2 DBUS_SESSION_BUS_ADDRESS=$DBUS_SESSION XDG_RUNTIME_DIR=/run/user/$(id -u) DISPLAY=:0.0 notify-send "Connecting..." Also tried: #!/usr/bin/env bash sleep 2 ...
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Network manager keeps changing default route (eth1 / wlan0)

I use integrated wlan card on laptop, and at work I dock my laptop on a thunderbolt 3 connection. After I have docked my laptop, the route table changes metrics a few times (for a good 20 mins in this ...
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Ethernet Cable Unplugged in Ubuntu 20.04 while it works in Windows

Sorry but I am no linux expert what so ever. I just bought a new motherboard; ASUS ROG Strix B550-f Gaming (Wifi) and I'm having trouble with both wifi and ethernet in Ubuntu 20.04. I have both Ubuntu ...
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No Wi-Fi Adapter Found Ubuntu 20.04

System: Dell Precision T3400 dual-boot Windows 10/Ubuntu. The system is connected via Ethernet to the internet at the moment. After update to Ubuntu 20.04 I am experiencing "No Wi-Fi Adapter ...
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192 views

Netplan, VLANs, and Nameservers (Where does all the info come from?)

I have netplan setup for one physical interface which in turn has a single vlan subinterface. Both the untagged interface and the vlan interface are statically addressed and have appropriate ...
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*-network UNCLAIMED ubtuntu 20.04 Wi-Fi 6 AX200

my network suddenly not working after rebooting. it was *-network DISABLED at first, but after trying things around, I messed it up and it become unclaimed. For some pointers I've got along the way, ...
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connect to vpn in ubuntu 20.04 problem

I have VPS windows server that have VPN enabled on. I'm already connected to that VPN with android phone and windows10. but i want to connect to that with Ubuntu 20.04 and get "connection failed&...
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Why is DH20 not correctly negotiated with remote host when establishing an IPSec tunnel?

Trying to connect a computer to a VPN server configured this way : Router# show isakmp policy ISAKMP policy: L2TP_VPN IKD_ID: 8 negotiation mode: main proposal: 1 encryption: aes256 ...
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Cannot connect to ubuntu's hotspot

I created a hotspot on ubuntu20.04 with the available option "Turn on Wi-Fi Hotspot" under Wi-Fi menu in settings. However, all my devices (including another ubuntu) can see the network, ...
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How to set up WIFI connection upon installing Ubuntu 20.04 LTS?

I just installed Ubuntu 20.04 LTS and was asked to create a Ubuntu One Account. However, it said no connection is found after I put in everything, and I don't see the option to connect to my WIFI ...
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Does Hotspot Login window in Ubuntu allow saving file streamed by server?

When Ubuntu 18.04 displays captive portal in the Hotspot Login window, is it capable of allowing user to save files streamed by the server? If the same portal is opened in Firefox browser for example, ...
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Ubuntu 20.04.1 LTS - NetworkManager not appearing in Ubuntu

For specific reasons, I have to use the network manager as an alternative to Cisco AnyConnect. My problem is that after installing the needed packages, no Icon appears at the top bar. I followed the ...
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Need Fix for NetworkManager Openvpn, prepending extra-path to crt-path

When adding a openvpn ovpn-file through the network GUI (and nmcli too), and trying to connect, it fails. But it works if I manual are connection with openvpn through the terminal. After a look in the ...
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Cannot connect to PPTP VPN on Ubuntu 18.04

I am fairly a new user to Ubuntu and Linux distributions and installed 18.04 LTS on vmware workstation. i already have a VPN connection that is working fine from a Windows machine. but if i configure ...
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Per-domain DNS servers

My laptop is running Ubuntu 20.10. It's connected to a network with a fairly normal internet connection - the router provides DHCP, DNS etc. But another host on the network (not the router) provides ...
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setup routing between two interfaces using network-manager

Who do I configure network-manager to route between two interfaces ? I want to route from interface 2 to interface 1. interface 1 is connected to the internet, and interface 2 connected to another ...
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Failed to configure NetworkManager to use dnsmasq

I am using openconnect to connect to vpn and vpn-slice for vpn splitting. openconnect modifies /etc/resolv.conf after start, but that doesn't help with vpn domain names resolving. To work around that, ...
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Qualcomm Atheros QCA9377 wireless not working on Dell with Ubuntu 20.04.1 LTS

I can't connect to my wifi on my Ubuntu partition. It says ' No Wifi Adapter is found' in the wifi tab. I have used rf kill unblock all(There are no soft/hard blocks) and other solutions offered by ...
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Ubuntu NetworkManager doesn't list any Wifi

I have Ubuntu 20.04 LTS in my laptop. Wifi was working fine with my old Belkin router. I replaced Belkin with a new TP-Link Archer C80. Dual mode is configured in it. All mobile phones, desktop were ...
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How to permamently add a nameserver to the /etc/resolv.conf?

I daily need to connect to a VPN from my Ubuntu Desktop 20.04, and each time I do that I need to edit the resolv.conf file, since it is constantly updated by NetworkManager. Its content is reset to: # ...
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Raspberry Pi 4 running Ubuntu 20.04 can't connect to some WLAN APs

I have a desktopified version of Ubuntu server 20.04 on a Raspberry Pi 4, now running NetworkManager. The wlan0 interface is using the built-in Broadcom wifi chipset. I am able to connect to some WiFi ...
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Intel 8260 wireless adapter unclaimed on 20.10 groovy kernel 5.8.0-26-generic

After updating to groovy, and then the kernel was updated at some point now I have to boot into 5.8.0-25-generic to use my wireless. Below is the output of lshw -C network on both. Is this a bug in ...
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Route traffic outside L2TP IPSEC VPN on Ubuntu 18.04 client

When connecting to websites like Netflix and Stadia I would like to route the traffic outside the VPN I have setup to connect to my office. It is a L2TP IPSEC VPN setup through NetworkManager on ...
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Internet has become very slow for only 1 PC and WiFi network combination

I have a lenovo-thinkpad-e470 with Ubuntu 16.04 running on top and have installed a new broadband connection at home. When connected to this WiFi network, I initially had high data rate and internet ...
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NetworkManager: Suppress Autconnect in special cases

My setup: I have a VPN connection (wireguard, managed by NetworkManager) that I like to keep on almost always, which is why it is set to autoconnect (connection.autoconnect = yes). I have a second VPN ...
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How to use WPA3 with Ubuntu 20.04

Having recently upgraded my Wifi router's firmware to one that supports WPA3, I tried to adjust the corresponding WiFi connection settings on my laptop running 20.04.1 by selecting "WPA3 Personal&...
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what's the current best way to connect 2 Ubuntus together on wifi?

I'd like to migrate my old home from an Ubuntu 19.04 to a new laptop running 20.04. Normally I'd use ssh/scp,rsync and unison. Can't use a cable as the new laptop doesn't have ethernet port. Not sure ...
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Wired ethernet connection failed on 20.04

Using 20.04 on a wired ethernet. Was working fine, then suddenly stopped. Using terminal ; lshw -C network Returns: *-network disabled .........Then all the correct data of the appropriate card and ...
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Unable to connect to the 5 GHz band

I am using Ubuntu 20.04. I have recently got a dual-band router. But the wifi selection menu does not show me the option to connect to the 5 GHz band. However, I am able to connect to the 2.4 GHz ...
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how to remove network devices from ubuntu 20.04

I want to remove this Redmi device because it keeps coming in the top panel. I tried using nm-connection-editor but nothing changed.
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ethernet unavailable until toggling in nm-applet every time I restart

Every time I reboot, the nmcli d will show enp7s0 ethernet unavailable lo loopback unmanaged Then, I open nm-applet, and I toggle "Enable Networking" off and on, and then everything ...
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Running Xubuntu, the network icon is missing and can't get it back

For the life of me I can't get that network icon back. I have restarted the X server, ran "nm-applet" and restarted NetworkManager. Any ideas? I can provide output for commands if needed.
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DNS nameserver gets changed after disconnecting from VPN on Ubuntu 16.04

I was using Google DNS 8.8.8.8 in Network Manager applet for some time and everything seemed to work fine. A couple of days ago I switched from Manual settings to Automatic and removed Google DNS for ...

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