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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How to match the --out-interface to the same --in-interface in iptables
The system have multiple interfaces: eth0, eth1, eth2, ... br0, br1, br2, ...etc.
The following rule will allow packets from "br0" to "br0":
iptables -A FORWARD -i br0 -o br0 -j ...
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Ubuntu WiFi hotspot MIA
I have a fresh Ubuntu 24.04.4 with a USB Wifi dongle from BrosTrend (AC1L), the most Linux friendly I can find. This is a minimal desktop version, but I initially turned off X/GNOME as it was mainly ...
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IpVanish VPN failed to connect
I am trying to install IpVanish on Ubuntu 23.10, but I get connection failure every time, the activation of the network connection has failed
VPN settings:
IPV6 settings:
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Slow speed Ethernet issue on Ubuntu 24.04
I recently changed my system to Ubuntu from Windows and I use my mobile and USB ethernet to connect, I used to get 500+ mbps on Windows by using USB tethering, but on Ubuntu 24.04 I am getting only 4 ...
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Unabe to do KVM networking over WiFi Interface
Running Ubuntu Server 24.04. I am trying to connect a Debian VM (KVM) to be accessible through my Home Network. Host to VM communication is not necessary.
On the host Machin there is a Lan port that I ...
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Ubuntu 18.04: Two wireless interfaces
I just install Ubuntu 18.04 on my laptop.
The laptop already has a wireless interface, when i try to plug in a USB wireless interface and try to turnoff one of them the other will stop too.
And i can'...
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Kubuntu 22.04 wlp2s0 wifi connected, but doesn't exist in "connections" app
Running kubuntu 22.04 on older Dell Inspiron P75F.
Wifi connects as wlp2s0 and internet is accessible. However, the device is missing from the "connections" app and the "network" ...
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System network connection
I tried installing a vpn (hide.me) then uninstalled it since I was not able to use it. After uninstalling the vpn, my Ubuntu was no longer connecting to the internet. It shows that the internet is ...
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Why Ubuntu 22.04 Network Manager sends messages to blackcat.canonical.com in two IP addresses?
Here are the netstat -tnp output captures from my Ubuntu 22.04 workstation. Why are there outbound NetworkManager connections established from time to time? What are they doing?
The IP addresses ...
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Correct way to apply WiFi mac address randomization
I wanted to randomize my mac address on every boot just like in Windows 10. During my quest for that I tried the following -
According to this post, starting from NetworkManager 1.4.1+ we can do mac ...
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QEUM KVM unable to start default network
I am trying to spin up a VM using KVM on Ubuntu. I am faced with an error when trying to set up Network settings no matter the choice:
Unable to complete install: 'Requested operation is not valid: ...
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No Internet connection after disconnecting from VPN in Ubuntu 18.04
In Ubuntu 16.04 I had no problems with VPN: after disconnecting I had Internet.
In Ubuntu 18.04 I have no Internet after disconnecting from the VPN. I can actually ping 8.8.8.8 but not www.google.com ...
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Setup Static IP for USB Ethernet Adapter Ubuntu Server
im using a USB Ethernet Adapter for my machine and I would like to setup static IP for that. Ive been following tutorials from other sources but it only applies to cable ethernet.
Im using Ubuntu ...
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NetworkManager does not support 2FA TOTP for openconnect/AnyConnect VPN
I have been using the NetworkManager with my Unis' VPN for years, and it used to work. Now they introduced multi-factor authentification using TOTP and I can't connect anymore.
I tried to setup the ...
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Cannot connect to a specific wifi on ubuntu 20.04
I have a strange issue about Wifi connectivity. My home has two wifi modems, F1 and F2 for each floor. My Ubuntu version was 18.04 and I want to upgrade to 20.04, but have to upgrade to 19.10 first. ...
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Force network manager to always connect to highest autoconnect-priority network even when already connected
I am using Network Manager (nmcli) to configure two connections to two different Wi-Fi networks wifi1 and wifi2.
I have set up a higher connection.autoconnect-priority for wifi2 (let's say 2) than for ...
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wifi issue on ubuntu 22.04
I am using Ubuntu 22.04 and my wifi gets disconnected after some time not following any regular time interval. But the problem is after getting disconnected every wifi available disappears from the ...
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Slowdowns since Update to 24.04 not only at boot time
Since the update to version 24.04 coming from 23.10, I have noticed waiting times in some situations that did not exist in this form before. The most noticeable and annoying is at system startup. The ...
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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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Can't update NetworkManager to latest stable version
I am running Ubuntu 16.04
NetworkManager --version
returns 1.2.6
I am wanting to update to the lastest stable version (1.14.4) from here.
The install documentation says "the shell command './...
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Network Manager settings not sticking after reboot
I'm attempting to automatically establish a VPN connection after reboot. I created the profile via the network manager GUI and everything works well. I can use nm-connection-editor to edit the ...
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wifi not working on fresh ubuntu 22.04 installation
linux kernel - 5.15.0-37-generic
ubuntu 22.04
inxi -Nazy:
Network:
Device-1: Realtek RTL8822CE 802.11ac PCIe Wireless Network Adapter
vendor: Hewlett-Packard driver: N/A modules: rtw88_8822ce ...
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Ubuntun 22.04: when connected with NetworkManager OpenVPN, DNS doesn't use the VPN DNS server
I am running Ubuntu 22.04
I have an OpenVPN to my company via NetworkManager in gnome.
Most of the interal systems work, but for example portal.azure.com has 2 DNS records, a public and private zone ...
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how to check network card bonding speed in ubuntu 10.04
I have Ubuntu 10.04 install DELL R710 server
I have configured the network bonding using the below steps
sudo apt-get install ifenslave
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vi /etc/network/...
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How to create NetworkManager profile for serial interface over SLIP protocol?
I've following network connection:
router <-> device Ethernet to serial (SLIP) <-> PC with serial input.
I need to reach network on PC over this chain.
I've attached slip interface over ...
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Wifi deteriorates over time; cronjob to restart network manager
I have an issue with my Ubuntu machine and WIFI, which apparently is difficult to resolve. Turning off and on the wifi fixes it (temporarily). When trying to connect from outside and the speed is very ...
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Ubuntu does not see any wifi networks
Hello I am new to Linux so sorry if i don´t give enough information.
As stated above Ubuntu does not see any WiFi networks.
Current setup
Operating system: Ubuntu 24.04 LTS
Processor: Intel Core i7-...
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WireGuard - Server Through Gnome Network Manager?
Can a WireGuard server be setup through Gnome network-manager? with a wireguard.conf file - no terminal or other program needed.
I need 3 clients to be able to connect to the server.
Internet traffic ...
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Raspberry Pi 3B with Ubuntu Server(CLI) with No Ethernet Recognition and No Wlan0 List
Everyone!
I'm a totally beginner for Raspberry Pi.
Now I 'm trying to connect raspberry pi 3B with Ubuntu 16.04 LTS Server to the ethernet and wifi. However the etheret and wifi can not recognized.
...
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Run nmcli as unprivileged user
I wrote a Python program to switch WiFi connections via the Network Manager dbus interface, which (I believe) is basically equivalent to the nmcli command-line tool. The script (and nmcli) work ...
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How to modify sbin.dhclient apparmor profile which is preventing automatic DHCP connection to network after upgrade to Ubuntu 24.04
After upgrading to Ubuntu 24.04 I can't make any network connections, wired or wireless with automatic DHCP enabled.
I have traced the problem to apparmor which is giving the following error messages ...
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Get Qualcomm Atheros AR93xx Wireless Network Adapter to work under Ubuntu 14.04
I'm trying to install TP-Link TL-WDN4800 Adapter with Ath9k under trusty. It should work just out of the box for windows and linux. On windows it works, but on ubuntu 14.04 (same computer) it doesn't. ...
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Ethernet lights not on when cable connected and connection not working
I have two OSs and the Ethernet lights on my computer don't turn on when the cable connected and I cannot connect to the internet. This is not a hardware problem, since my second OS connects to ...
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Ubuntu 24.04 freezes when compiling code with LLVM-14
I have been running into an issue over the past 2 weeks where compiling my work codebase (bazel build system) causes Ubuntu to freeze completely. The only way out is to force-restart. I have tried ...
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WiFi not connecting after upgrade to Ubuntu 24.04. Problem with apparmor?
After upgrading to Ubuntu 24.04 I can't make any network connections, wired or wireless with automatic DHCP enabled. If I set IP Address, Netmask and Gateway manually everything works. To get the ...
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Cannot connect to some sites on Ubuntu 18.04
Recently some of the websites stopped loading on any browser of my Ubuntu 18.04. When I try to open sites like StackOverflow, UbuntuForums, seedr.cc, gives me the following message (other browsers ...
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Can't connect to WiFi with "Connection activation failed" error after upgrade from 14.04 -> 15.04
I recently upgraded from 14.04 to 14.10 to 15.04 in succession. I lost internet capabilities each time, thanks to my having to use a Realtek WiFi dongle.
I was able to resolve those issues both times,...
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X session is not starting with the network disabled
I have an Ubuntu 22.04.4 installation with a Xanmod 15 khz patched kernel and bash startup and a tty1 override for a custom script launch.
This script launches an X session with openbox plus a ...
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Ubuntu Server 18.04 — Use nmcli to (only) discover wifi networks but don’t interfere with netplan and networkd
Ubuntu Server 18.04 now uses netplan to manage ethernet and wifi devices.
I’d like to be able to discover wifi networks via nmcli, as I’d like to use php-wifi in one projects.
Is it somehow possible ...
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How to create a network bridge between wlan0 and et1 to a second eth0 device?
I have a network topology as described in the linked image. Network Setup
I have a WiFi router on a private 10.12.12.1 network. An Ubuntu 20.04 box, on a Nvidia Jetson, is connected to the WiFi ...
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Failed: failed to start .snap.network-manager.networkmanager.service
I see this on my black display when Ubuntu 24.04LTS crashes to the black screen and requires logging back in or rebooting...what does it mean and how do I fix it... or does it need fixing?
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Connection activation failed: (5) IP configuration could not be reserved
Since yesterday I can't connect to my Android's WiFi anymore.
To understand the problem better, I set NetworkManager's monitor log level to "DEBUG" and used the CLI. The error appears after 45 ...
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Wi-Fi suddenly not working on 23.10
I've installed the 23.10 iso on my work machine before it got taken down, and everything was working flawlessly. However, after booting up this morning I can't connect to wifi anymore. Tried a few ...
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Configure GSM connection using shell (nmcli)
I have a system without X display and I want to use nmcli to configure my usb cell modem. I can get the modem working using Ubuntu Desktops GSM-Wizard (X/GUI). But what is the console alternative on ...
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wifi(wlan) not working on ubuntu 24.04?
i think the error is in the image
I recently updated to Unbuntu 24.04 LTS version. During that day everything worked fine but today I encountered a problem connecting to my wifi, It no longer works. I ...
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Is it possible to add a connection by nmcli command without sudo?
I'm working with a lubuntu 22.04 distribution. I need to execute the following command by a user without root privileges:
> nmcli c add ifname enp3s0 type ethernet con-name 'connection-test'
The ...
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Wifi not working on ubuntu?
I recently updated to Unbuntu 24.04 LTS version. During that day everything worked fine but today I encountered a problem connecting to my wifi, It no longer works. I restarted my computer, but I can ...
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Unit network-manager.service not found
I installed node.js then it started removing something then I found out I couldn't access my network (wifi nor network adapter). I have tried to run different program still same.
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Where are WiFi passwords stored in Ubuntu 24.04?
In the past, WiFi passwords can be found in /etc/NetworkManager/system-connections/. With the new Ubuntu 24.04 Noble Numbat, that folder is empty (even as I am using home WiFi now to post this ...
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Dual NIC not working
I am running Ubuntu Server 16.04 with two on-board NICs. Ubuntu sees both cards, but both eth0 and eth1 will only pass traffic out of one physical interface, although they are configured separately (I ...
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