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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Executing commands when network goes up or down

I'm trying to get the Network Manager dispatcher to run a script when the network interface comes up or goes down. I want to execute an espeak command when the connection goes up or goes down. I can ...
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wpa_supplicant[907]: TDLS:Invalid frame

I'm investigating a system freeze and I came across the following in /var/log/syslog Jan 22 08:40:41 hostname wpa_supplicant[907]: message repeated 42 times: [ TDLS: Invalid frame - payloadtype=1 ...
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How do I remove the network manager applet from my GNOME Flashback session?

The title says it all. I don't want that applet because when I'm in an environment where wifi is of poor quality, it has the very annoying tendency to popup windows that interrupt other activities, ...
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Internet not working on my laptop (xps 9570) just at home, works fine on all other networks

Im having an issue with my internet. Two days ago after coming home from work, I noticed I can't connect to any site. Then I noticed that I have internet but it looks like I cant resolve DNS. I pinged ...
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How to share Internet (eth0) with Ethernet (eth1) and Wifi at the same time?

Problem I would like to share an Ethernet connection with two other Network Interfaces. So one source, and two shared connections. Background Here is a screencap of my Advanced Network ...
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dnscrypt makes network unavailable

i'm using ubuntu 18.04 and i tried to install dnscrypt using this tutorial but when i tried to connect to a website it always failed, i tried to check the status of the dnscrypt service, and it shows ...
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Hotspot/Tethering but can't see the network

I'm trying to set up a hotspot (a.k.a. AP, a.k.a. tethering) with my desktop computer's wireless card, which is also is connected to internet via ethernet. I get the green light in nmcli, but none of ...
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Ubuntu 18.04 sssd and realmd services failing to start after trying to setup AD using sssd

I am using Ubuntu 18.04 server. I have been following different blogs to be able to use Active Directory authentication but after installing all the programs suggested, and possibly more, making all ...
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Issues with WiFi under WPA2 Ubuntu 18.04

On my work I have a protected WiFi network and a guest one. For some reason, I can't connect to the protected one it just asks for login password and doesn't connect. I googled for a solution but not ...
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Network manager not saving vpn password

Ive been running Kubuntu 19.10 for some time now and today I tried to setup protonVPN with it. All went well however when I tried to connect it asked me for my password which I had just saved. Turns ...
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18.04 server Network is unreachable

My Server was working great until TimeTrex (A PHP based Payroll Application needed updating for the new Tax Tables. The install went in clean but now the system says the network is unreachable. I ran ...
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Wired Ethernet Connection is not working on Kubuntu

For some reason, I can't access internet, when connected via ethernet. (Works on wifi though.) The output of ifconfig -a: enp1s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 ...
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WiFi doesn't work for specific networks

I recently switched to Ubuntu 18.04 and had no trouble connecting to my university wifi or my wifi at my parents house, but I've been unable to connect to my wifi in my apartment. I also can't connect ...
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Unable to detect any wireless networks in Ubuntu 16.04

I have a dual booted HP OMEN with windows and Ubuntu 16.04. Until a few days ago, I was able to detect wifi networks with no issues. However, I can suddenly no longer see any wireless networks. ...
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Eoan: network-manager no longer stores VPN passphrase

I've setup an OpenVPN configuration in network-manager to quickly connect/disconnect to our office network. This works well, but since an update to 19.10, network-manager asks me for the VPN key ...
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wpa supplicant installation showing error in /usr/bin/dpkg

recently i upgraded the os from ubuntu 16.04 to 18.04 LTS. Now I cannot find available networks in wifi section. It also shows wifi unmanaged. I tried connecting mobile hotspot through terminal while ...
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UBUNTU 18.04: WiFi problem 2nd try

After a reboot it keeps asking for wifi password and doesn't connect to any networks, it can list networks. After a few reboot it sometimes works but usually doesn't. picture for those who don't ...
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network-manager fails after upgrade from 19.04 to 19.10

After an over the internet upgrade from Ubuntu 19.04 to 19.10 I have lost use of the network. network-manager fails to do anything. If I run ifconfig, all it shows is the loopback interface. If I use ...
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Networking trouble, cannot resolve many hostnames

Background: I believe the issue began occurring shortly after I installed the NordVPN package from their website. Issue: When I am not connected to the VPN I am having issues resolving hostnames. I ...
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Network manager can't get IP on home wifi (Atheros AR9485)

I have acquired a laptop, an Asus Vivobook S310L, and I got Kubuntu 19.04 installed. It runs like a charm, but I have an issue with my wifi. It is simply unable to connect to my home wireless......
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No Internet Connection Following CodeReady Containers VM Setup

I'm running Ubuntu 18.04 LTS and am having trouble connecting to the internet. Network Manager indicates I'm connected to my wireless router, but there is a '?' symbol where the wifi symbol should be ...
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Frequent random wifi disconnections on a particular network with QCA9565 / AR9565 wireless network adapter

I have random wifi disconnections using the wifi in the campus. Sometimes there is a question mark next to the network I am trying to connect, other times it is not able to recognize the wifi options. ...
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How can I use the network manager to connect to an internal and internet network?

I want to connect to two networks: one via ethernet (an intranet without internet access) and WiFi for wireless access. Both networks use a different subnet. I've setup a separate ethernet connection ...
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Issues with connectivity between wireless hosts [closed]

I am testing with two laptops both using wireless and a network AP. If each laptop pings the default gateway then there is no issues. There is minimal lag and jitter. If however the hosts try to ping ...
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Attempting to connect to the wrong IP address

I recently changed routers. My previous host address was the familiar 192.168.0.1. My new host is 192.168.1.1. The problem is I am trying to clone some software, VMWARE Workstation is looking for ...
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How to enable wol by default for new connections with network manager?

How can I enable WOL (magic) by default for every new ethernet conncetion by default with the network manager (ubuntu mate 18.04). (background: I'm using an cloning software to use one image on ...
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WiFi Error When Connecting

Often when I connect my WiFi it takes too much time to connect and shows an interrogation marks. How can I fix it.
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Kubuntu network connection information

In Kubuntu 18.04, I could not find any connection information utility more than the up/down rates: I need more data such as current IP address like found in the Gnome connection manager.
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Huawei E5830 not detected automatically

I have Huawei E5830 Mifi device. https://en.wikipedia.org/wiki/Huawei_E5#Huawei_E5830,_E5830s,_E583c_and_E585 It is not automatically detected by ModemManager in Ubuntu 18.04. Can't connect to ...
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Ubuntu 19.10 revert polkit to sane defaults asks me for password for everything

polkit is making it so that I have to put in my sudo password everytime I: mount an external usb drive disable any network device change network settings of any kind reboot shutdown I can't believe ...
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Why is NetworkManager included in Ubuntu Server 18.04?

I am a bit confused about why NetworkManager (and Modem-Manager) are a part of Ubuntu Server 18.04 and why they are enabled services by default. My understanding is that Netplan is the default tool ...
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Wifi connection problems - random packet loss for shorter or longer periods 18.04 LTS - Lenovo L490

I am having issues with my WiFi connections, mostly at home WiFi, where another Lenovo T450s (Ubuntu 18.04 LTS), 2 Windows notebooks, phones don't have any issue at all. Sometimes, randomly, ...
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How to prevent NetworkManager from changing iptables?

Every time I turn on/off a device in my local network the NetworkManager automatically adds/removes the set of rules in iptables. The extracts from /var/log/syslog: NetworkManager[799]: <info> ...
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What could make ike-scan see an IP that is an L2TP/IPSEC VPN show up like a non-IPSEC VPN?

Before today, I connected to my work VPN fine (using libreswan and NetworkManager-l2tp). After upgrading my system, my VPN connections ceased functioning. After a lot of troubleshooting, I noticed ...
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Client OpenVPN connection has no internet connection

I have Ubuntu 18.04 and openvpn 2.4.4. When I try to connect with the vpn I can't use the internet anymore, only the resources behind the vpn. I can't even ping 8.8.8.8 (all packets lost). Smh this ...
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Lost connection during wifi roaming

This happens after I upgrade to 19.10 (from 19.04). When connected to an SSID with multiple BSSID (wifi roaming), the connection is fine, for the first few minutes. Then when the connection switches/...
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Is it safe to edit NetworkManager.conf in this way

My University tells me that in order to use its VPN service I have to make changes to my /etc/NetworkManager/NetworkManager.conf file with the following argumentation: "When connecting to the VPN, ...
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Wireless device Intel Corporation Device 9df0 (rev 30) DISABLED on 18.04.3 [duplicate]

I'm new to Ubuntu. I will try to provide as much detail as possible in this question, but if I have left anything out, please let me know in the comments and I will provide it. If this question would ...
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Ubuntu 18.04 WiFi range problem (Dual Band Wireless-AC 3165 Plus Bluetooth)

I hope all of you are well. Please bear with me since I am a Ubuntu debutant and I need some help. I have installed Ubuntu 18.04 on my Lenovo Ideapad using a Live USB. My laptop was initially ...
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When Connected in WiFi if I connect the ethernet cable Ubuntu 19.10 doesn't switch to ethernet connection

I noticed that if I'm connected to wifi and then I connect my desk ethernet cable, the connection keep to go through the lower speed wifi instead to switch to the Wired and faster connection as ...
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gnome apps think there is no network

I had to reconfigure my machine network configuration from dhcp to static IP by manually editing netplan config. Apparently, there is some GNOME related configuration leftover, because several ...
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18.04 Total Loss of Connectivity (Wifi&Eth) after Update

I left my Ubuntu 18.04 to download the new packages from software updater. When I got back I had no more internet connectivity. If I try ping google.com I get ping: sendmsg: Operation not permitted ...
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How can I use a custom DNS server?

I have a DNS server running on 172.18.0.2 and I want to use it as my DNS server. I went into the network manager and set up my connection: The server works: $ host test 172.18.0.2 Using domain ...
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How and why does NetworkManager during systemd boot create a connection in /run/NetworkManager/system-connections colliding with /etc/…?

Ubuntu 19.04, 5.0.0-32-generic x86_64. My (geriatric, I know) onboard atl1 ethernet chip is getting extremely hot, even temporarily fails (until reboot), when heavily networking at 1000 MB/s. Tried ...
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Computer disconnects from WiFi and doesn't reconnect automatically

I'm running Ubuntu Desktop 19.10 and mostly use it as a server. Periodically (every few days) it drops off wifi and doesn't reconnect. Rebooting wi-fi AP doesn't help. Only manual reconnect/suspend&...
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NetworkManager remove device if created from systemd

I create systemd script for bring up CAN interface in my Ubuntu 18.04 machine. Systemd script is as below: [Unit] Description=...
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Multicast not working on second vlan

I have Ubuntu 18.04 installed on my workstation with one NIC. On my network adapter eno1 I had setup eno1.201 and can see my multicast working fine with VLC.. When I change it to eno1.202, I can ping ...
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WiFi No Longer Authenticating Kubutu 18.04 wlp59s0: Link Not Ready

I was hoping that the community could help me with a problem that has developed overnight on my Dell Precision 5630 laptop which is running Kubuntu 18.04 LTS. Everything had been running fine since ...
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Trying to set up a virtual network, having issues

I'm trying to set up a small virtual network using VirtualBox but having some issues getting each VM to communicate with each other. Here's my small layout. 1 Ubuntu 18.04 Desktop VM acting as a ...
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After Lubuntu install, can't connect to WiFi, can connect to Ethernet [duplicate]

I tried: sudo apt-get install network-manager-gnome followed by: nm-applet but it gave me: dbind-WARNING **: 21:03:15.214: Error retrieving accessibility bus address: org.freedesktop.DBus.Error....