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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Auto-connect to hidden wifi network Ubuntu 20.04

Unable to automatically connect to hidden networks on Ubuntu 20.04. Set up 2 connections, 5G and 24G, both hidden networks. Connections connect manually fine. Tried setting BSSID as noted in another ...
2 votes
1 answer
9k views

How to setup WireGuard client so only traffice for specific IPs is routed over VPN

I am using the Wireguard VPN client on Ubuntu 20.04 through the network-manager plug-in. The plug-in reads the configuration file I got from the sys admin, which is below (network-manager also handles ...
6 votes
3 answers
8k views

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 ...
0 votes
0 answers
15 views

Can I configure my netplan configuration so that all UDP outgoing broadcast traffic goes thru a specific Ethernet interface?

I've got Ubuntu Desktop 22.04 on a computer with 2 Ethernet interfaces. I've been reading netplan documentation for the past 2 hours and I'm running out of ideas (or understanding). eth1 connects to ...
0 votes
0 answers
18 views

Network Manager keeps asking for "Legitimation for WIFI"

I have an elderly person whose desktop is connected to the LAN via WIFI card. The WIFI is always the same, "Allow all users to connect" is already checked, the main user gets automatically ...
6 votes
1 answer
5k views

cat: /var/lib/misc/dnsmasq.leases: No such file or directory

I've searched all over the internet, but couldn't find any answers of my problem.. I want to connect my Raspberry Pi to my laptop. But whenever i try to check the ip address of my raspberry, i get ...
0 votes
2 answers
8k views

"Could not find source connection" in Network Manager

If the contents of /etc/network/interfaces are: auto lo iface lo inet loopback There is no error for a PPTP-connection declared in Network Manager. It works when I right click on it and connect. ...
13 votes
2 answers
44k views

How to trigger network-manager autoconnect?

Let's say that network-manager is connected to specific Wi-Fi network. When I click "Disconnect" via GUI from it then it never connects back. But when I close the laptop lid, then open it back (so ...
2 votes
2 answers
5k views

Network connection is lost after every few minutes

During the startup a wifi connection is established and everything works fine. After a while, the connection disappears suddenly. To fix this i do, sudo service network-manager restart and then my ...
1 vote
0 answers
27 views

Wi-Fi connectivity issues on Ubuntu Server

I'm trying to setup to run my old laptop as a home server using Ubuntu Server 22.04.4. The problem is after configuration, my laptop can not detect any wifi using nmcli device wifi list I have tried ...
-1 votes
1 answer
50 views

Ubuntu Wifi keeps disconnecting intermittently and don't connect afterwards

I'm using ubuntu 22.04. My wifi keeps disconnecting randomly in every two hours. And after that it don't reconnect imediately. I've to do all sorts of things to reconnect like restart my computer ...
0 votes
1 answer
5k views

L2TP Network Manager plugin cannot be installed

I'm using ubuntu 15.10 and a beginner of Linux/GNU system. I know almost next to nothing about VPN's detail too. So the terminology about VPN might be wrong. I and my colleagues use a server with ...
0 votes
0 answers
23 views

Virtual WDS AP Can't Connect to Home WiFi Network

I'm running Ubuntu Server 23.10 on a Raspberry Pi 4B. I have WDS/4addr enabled on my USB-WiFi Dongle (that has AP capabilities), and have created a virtual network named 'wds0' that would connect to ...
0 votes
0 answers
34 views

Create an offline (no-internet) network using netplan

I'm trying to create a simple, no-internet (completely offline) network consisting of an Ubuntu server (22.04 LTS). The server will both create a wifi access point and connect over wired ethernet to ...
-1 votes
0 answers
38 views

Network icon is missing and no internet connection

So the network icon in the toolbar is gone on my device and the network settings are missing: I've tried mutiple solutions on the internet but none of them work. This did not work: sudo nmcli network ...
0 votes
0 answers
30 views

Ethernet problems on Ubuntu 22.04 LTS

Before anything, I'm using a somewhat old Asus laptop model (Q550LF). With that said here is the more detailed specs of the problem:
-1 votes
0 answers
21 views

Wifi disconnects randomly in few mins after boot and unable to connect back; On Ubuntu 22.04

Recently, I've come across a problem where my wifi gets disconnected in 0-10 minutes after boot and I'm not able to connect back to it. On switching wifi off and back on, it stops showing the ...
-1 votes
0 answers
23 views

What exactly happens when I click the Network Manager icon in the system tray?

I'm trying to create a workaround for a bug I have yet to file. It happens only with one specific modem/router, but that's the router I use the most. The problem is this: Sometimes my internet stops ...
0 votes
0 answers
17 views

Prioritize routes in NetworkManager when using custom IP with DHCP fallback

I'm using network manager to set a custom IP address, but also keeping DHCP activated in case I connect my headless device to another network, I automatically sets the default gateway and everything. ...
0 votes
1 answer
1k views

nmcli - all connections show "unmanaged"

I searched for an answer to this and found a few different things but none of them have resolved my problem. On a fresh install of 22.04.1 (server - no DE)... nmcli con show returns an empty line. (...
0 votes
0 answers
69 views

Nmcli and nmtui can't read password for wifi network

Ubuntu 23.10 here. When using Network Manager in KDE, I can connect to the wifi network via the Network Manager applet. Connections are saved with passwords so I don't need to enter a password for ...
20 votes
5 answers
60k views

Both DHCP and static IP addresses simultaneously on one interface

We can use multiple IP addresses for a single interface in Linux (eg. eth0:0, eth0:1). But can we use DHCP and static IP at the same time? eth0:1 should have a static IP address and eth0:0 should be ...
0 votes
0 answers
28 views

Connecting to two different networks simultaneously using two network adapters to access Internet

Description I have two wifi adapters, each one is connected two a different network, while each network is connected to the Internet. The two networks have the same network mask and my computer has ...
3 votes
1 answer
18k views

Job for NetworkManager.service failed because the control process exited with error code

I am Running Ubuntu 16.04 KDE. See this for specifications. $ uname -a Linux ElMaverick 4.4.0-112-generic #135-Ubuntu SMP Fri Jan 19 11:48:36 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux $ cat /etc/...
1 vote
0 answers
37 views

Network setup for a mobile robot base

I am working on a mobile robot base that is supposed to be controlled from a stationary control station. The robot itself has multiple computers onboard, which are on an internal Ethernet network. The ...
1 vote
2 answers
3k views

Set network interface metric to a fixed value

I have a fixed IP camera which is configured on static IP and connecting using Ethernet (enp3s0). WiFi is disabled (from the GUI). Cellular is switched on and it is also on static IP (static IP is not ...
0 votes
1 answer
5k views

VPN in L2TP connect fail

I have a problem with L2TP VPN. I used Ubuntu 18.04 and installed network-manager-l2tp, network-manager-l2tp-gnome, but I failed to connect company's L2TP VPN. The following is syslog. Jul 1 18:13:...
0 votes
0 answers
16 views

Unable to get l2tp 1.3.16 to work on Ubuntu 22.04

System details: Laptop: TIMI Mi NoteBook Ultra OS: Ubuntu 22.04.4 LTS Processor: 11th Gen Intel® Core™ i5-11320H @ 3.20GHz × 8 xl2tpd version: xl2tpd-1.3.16 I have been trying to set up l2tp on my ...
0 votes
0 answers
48 views

turning wireless interface off

I am creating a hardening tool where i need to turn off all the wireless interfaces, is the command nmcli radio all off enough for that purpose, or should i be doing something extra, making some ...
19 votes
10 answers
30k views

I accidentally deleted the network-manager and don't have access to internet anymore

I cannot connect to any wifi connection since I deleted the network-manager. Is there any way to get it from another computer and then install it on mine or is there a way I can get an internet ...
-1 votes
1 answer
271 views

NetworkManager is not running after upgrading to Noble [closed]

I admit I knew this to be a long shot, but had to try it - I upgraded my 23.10 to 24.04. After booting up, my network connectivity is gone and the Settings screen says: What I would usually do in ...
13 votes
2 answers
16k views

Getting openconnect vpn to work through network-manager

This is the same issue as here: Getting openconnect vpn to work through gui , but my additions to it were deleted and I was asked to create a new question. In fact, there are a number of folks asking ...
2 votes
1 answer
4k views

How to fix OpenVPN error when using network-manager-openvpn-gnome?

I need to connect to some VPN via OpenVPN. I am using Bionic. It works when I run the command as sudo from terminal ~$ sudo openvpn --config somevpn.ovpn ... Sun Jun 10 22:35:31 2018 TUN/TAP device ...
0 votes
1 answer
62 views

Sudden problem with WiFi internet access with one specific Ubuntu 22.04 device with one specific router

I have an Ubuntu 22.04.4 LTS (with Intel Wi-Fi 6 AX201) that suddenly it just can't access the internet with my home WiFi. It was completely unexpected because it was working fine up until now, and ...
0 votes
1 answer
27 views

ip-config-unavailable DHCP error from NetworkManager

Overview and Environment I recently set up a new VirtualBox VM and ran into some strange network behavior. The machine is running Ubuntu 22.04 and after installing the virtualbox guest additions, my I ...
0 votes
1 answer
4k views

Temporary failure in (DNS) Name Resolution / 20.04

"Temporary failure in (DNS) Name Resolution" Background: I work in healthcare security with approximately ~125 servers across a dozen clients across the US The appliances are both physical ...
2 votes
1 answer
4k views

Network Manager missing after update: no connectivity

After an update and restart, I found that the network icon on the top is missing and so, I cannot connect to LAN, wifi, USB modem, nothing. Now, I am booting from a Live USB, then chrooted to my ...
8 votes
1 answer
19k views

Virtual Machine Ubuntu 20.04 LTS : connect: Network is unreachable

I am new to linux and networking and today I have a "connect: Network is unreachable" when executing ping or sudo apt commands. I have seen some similar questions but still don't have a clue ...
3 votes
2 answers
12k views

Ubuntu 18.04 - No Wifi networks found

I have Ubuntu 18.04 Dual booting with Windows 10 on my HP-EliteBook-745-G2, and for some reason, I cannot seem to find WiFi networks through my WiFi adapter, but Ethernet works (however, Ethernet ...
5 votes
10 answers
20k views

Unable to connect with the hotspot created on ubuntu

I am using Ubuntu 22.04.1 LTS desktop. I want to share the ethernet connection via wifi hotspot on my laptop. After turning on the hotspot, I am not able to connect any device from the hotspot, it ...
0 votes
0 answers
19 views

How to reactivate the network manager when the PC does not have access to the internet?

The day before yesterday I installed the proprietary NVIDIA 535 driver and yesterday when I turned on the laptop, the place to log in did not appear. I managed to use GRUB to access the terminal and ...
4 votes
3 answers
9k views

I can't connect to VPN under Ubuntu, what is possible on Windows

I was provided with an access to the VPN server. All I got were server's IP, username and password. Under Windows connecting to the server was easy - I just had to type the information I received. ...
2 votes
1 answer
612 views

Manually Disable Wifi before suspend

i'm running Ubuntu 18.10 with Gnome - Suspend to Ram isn't working. my syslog told me that wpa_supllicant refuses to freeze. I already tried a couple fixes but none are working. Most of them are ...
0 votes
0 answers
33 views

Script ideas for configuring VPN connection

After some bad crashes of my system, I decided to take a more organized approach and develop a bash script that will handle most of the things I tend to configure manually after a fresh installation (...
2 votes
1 answer
4k views

dnsmasq unrecognized command

I'm attempting to run a script which calls service dnsmasq restart service dnsmasq restart dnsmasq: unrecognized service No matter what I call for dnsmasq, it gives me the "unrecognized service" ...
29 votes
8 answers
82k views

Editing network interfaces without system rebooting

I'd like to make some changes to my networking configuration by editing my /etc/network/interfaces file. What's the cleanest way to make changes to this file and have them take effect, without having ...
0 votes
0 answers
42 views

Wifi disconnecting after some time in Ubuntu 22.04.4 LTS, REL8822 CE

I have a problem with wifi connection, the wifi is disconnecting after some time. The wifi is connecting if I restart the pc and after some time disconnecting again. I ran the command: sudo dmsg I ...
0 votes
0 answers
47 views

Network Manager keeps crashing

When I manually try to turn off my WiFi or switch network from the system tray, NetworkManager crashes and I get this NetworkManager needs to be running I followed a solution from here Ask Ubuntu | ...
2 votes
3 answers
5k views

Quectel EM120R_GL modem seems to work but SIM missing or not detected

This card has two SIMs, SIM0 (or whatever number) and SIM1. SIM0 is eSIM and the default SIM, SIM1 is physical SIM inside the slot. You need switch SIM0 to SIM1. This issue has been discussed before. ...
6 votes
2 answers
18k views

Ubuntu 20.04 - network DISABLED

I have Ubuntu 20.04 on a Dell XPS-13-9370. Things were fine but today my wifi stopped working after I disconnected of a vpn. I don't have dual boot, only ubuntu. From the Wi-Fi settings panel I see ...

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