NetworkManager is a set of co-operative tools that make networking simple and straightforward.

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System boots slow - Ubuntu 16.04

I recently installed ubuntu 16.04 , after the installation seems like it takes more time to boot . On an average it takes 55 seconds to 1 minute . While checking the "dmesg" log I could see it gets ...
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72 views

Wifi applet not showing active connection after sleep mode in 16.04

After updating to 16.04 I had few issue with my WiFi : Bug #1571154 on ubuntu lauchpad (sorry cannot post 2 links) Since the update, randomly after resuming from sleep mode the wifi applet doesn't ...
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68 views

blueman vs network manager

Flavor: Lubuntu 16.04 At first: I am aware that there are numerous questions concerning a missing nm-applet icon in a lubuntu/lxde panel, but my case differs and I could not find one of the solutions ...
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25 views

Route traffic from eth1(local network) to eth0(external network) where ubuntu is dhcp server

I have an ubuntu server which is configured to be DHCP server to give IP address to a cisco switch through eth1. eth0(connected to the external network) ip:10.106.24.182 netmask: 255.255.255.0 ...
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1answer
245 views

16.04 LTS - all wifi connectivity lost when changing wifi networks

After upgrading from 15.10 to 16.04, when I switch wifi networks using the network manager applet, all networking capability is lost. Before selecting the different wifi network, the wifi works ...
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26 views

Hide unmanaged network interfaces in Ubuntu

On my laptop running Ubuntu 16.04 I have VMware Workstation 12 Pro (legitimately) installed, so there are virtual network interfaces that are unmanaged by network-manager but they still show up in the ...
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1answer
33 views

how to bring linux bridge up at booting time?

I am trying to bring up a linux bridge at the time my ubuntu is booting. The bridge is mapped to eth0 interface. Is there any way?
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74 views

Ethernet Network disconnected but cable is plugged-in

Hi Forum users and admins. I have a Wired Connection Problem. When I used Ubuntu 15.10 there was no problem. But now in Ubuntu 16.04 LTS, it shows Ethernet disconnected. You are offline when i ...
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1answer
752 views

Ubuntu 16.04 LTS How to force all http/https trafic to use proxy?

I'm just switched back to Ubuntu, from Windows. I had a program in windows (Fiddler) wich captured all outgoing traffic and could edit their header to use proxy. Are there any way to force all of my ...
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6 views

Default route is for the wrong router on same network

This is just plain bizarre, I really am not sure what to make of it. The router situation of the place I'm staying at is as follows: there is a wireless router (router A) that is connected directly ...
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0answers
60 views

Network Interface does not come up automatically

I have a couple of Jetson TK1s and Jetson TX1s running Ubuntu 14.04 (Linux4Tegra). I need to be able to switch between two network configurations - an "office" one where I'm in the office and can ...
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24 views

Network Manager taking control of interface when restarting

I start my computer without any special configuration in /etc/network/interfaces, so as expected NetworkManager manages my wlan0 interface. Then at somepoint I change the /etc/network/interfaces to ...
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56 views

Ubuntu NetworkManager version downgrade

I have installed Ubuntu 16.04 LTS. Everything is working fine. But, I cannot connect to the Internet. Our university is using 802.1x - TTLS/PAP authentication. It cannot pass the PAP security phase. ...
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20 views

Network Problem

I have started Ubuntu 16.04 LTS OS 2days ago along Windows 8.1 OS, initially my broadband was connected and there was no problem with wiered connection but now my wired connection is disconnected and ...
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1answer
48 views

KDE5 Not Connecting to L2TP VPN

KDE is refusing to allow me to connect to the server, saying that org.freedesktop.NetworkManager.l2tp is not installed. Logfile: May 5 11:54:12 BlackHawk NetworkManager[7978]: <info> ...
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36 views

OpenVPN no valid VPN secrets on 14.04 LTS [duplicate]

I followed below guide: Connect to access server from Ubuntu I tried the first time to get OpenVPN running on Ubuntu 14.04 LTS. I installed network-manager-openvpn-gnome and also ...
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34 views

14.04 LTS: Mobile broadband “connected” but network unavailable

As of a software update 2-3 days ago (let's say after May 1 but before May 5), network via broadband doesn't work. Connecting to mobile broadband lights up the correct LEDs on the dongle. ifconfig ...
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28 views

Networks show “Ethernet Network () Device Not Managed” (Xubuntu)

Could not find this question, so apologies if it is a duplicate. I am running Xubuntu on a Lenovo Yoga 211 as my only OS. I do not have an Ethernet port, and as such have of course never tried to ...
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1answer
86 views

connection to wifi network with my asus x205T

I Have installed Ubuntu Linux on my Asus X205T, using an USB WiFi, (everything went ok). In the next step, I tried to install the wifi network driver: wget ...
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21 views

Is there any challenge-response IPSec VPN client for Linux?

I've been looking at Network Manager and now looking at StrongSwan. Although StrongSwan seems to support challenge-response, it seems it only does so on the server side. Whereas vpnc/NetworkManager ...
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1answer
51 views

Networkmanager does not know that I am online, after resuming from hibernate

The following question is very close to this question. When closing the lid of my notebook or going to hybernate and waking up my Ubuntu 16.04 machine, the nm-applet shows, that I am offline. ...
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36 views

Only use /etc/network/interfaces for configuring network

I'm comfortable using the classic /etc/network/interfaces, and since I've had bad experiences with Network-Manager in the past, one of the first things I do when installing a new Ubuntu system is to ...
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1answer
47 views

How to release an IP address and renew from the commandline?

I am using modern versions of Ubuntu that use network-manager, and I would like release and renew my network settings through the commandline. In the olden days when Ubuntu used the interfaces file, ...
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1answer
72 views

14.04 to 16.04 upgrade ignores NetworkManager.conf

The machine in question was a straight from dvd install of 14.04 (upgraded to date before upgrade to 16.04 on 27-APR-16), with static ip, bind9 and registered domain. ...
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14 views

How to autoconnect an ad-hoc network?

If I use the network connection editor to create a new wifi ad-hoc network, I can see it on another computer and connect to it. However, the other computer connects automatically if and only the ...
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1answer
897 views

Kubuntu 16.04 network-manager failed to edit connection with crued log

Always I want to edit a network-connection(WiFi, VPN, eth etc.) I get a log-message something like May 2 21:39:19 mylaptop NetworkManager[925]: <info> [1462217959.6967] audit: ...
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1answer
22 views

Interface's manual configuration problem

I'm building some home lab (Linux & windows) & I have some very basic configuration problems. The problem: Ubuntu 14.04 updated & upgraded (will be a router) I want to configure 3 ...
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1answer
36 views

Configure two network interfaces on Ubuntu 14.04

My computer is running Ubuntu Server 14.04, and is connected to two networks at the same time (i.e., local network A with IP 192.168.1.30, which has access to Internet; and another local network B ...
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2answers
3k views

Set static IP Ubuntu 16.04

I am a new with Linux, having years experience with Windows servers/desktops and am having issues setting a static IP. I am using a method used for previous versions of Ubuntu, which doesn't seem to ...
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1answer
223 views

16.04 LTS wifi connection lost randomly every 5 minutes

First I had this issue described here 16.04 LTS wifi connection issues but nobody was able to provide a valid answer. Recently this wifi connection issue gets even worse. I would lose wifi connection ...
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33 views

Cant SSH to remote server trought VPN

Currently am running Ubuntu 16.04 with installed and configured CiscoAnyConnect VPN. When I connect to VPN, I can't ssh to remote servers. SSH is just standing and nothing is happening. I can ping ...
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0answers
36 views

Not receiving IPv6 RA packets

I have a new Dell XPS13 Sputnik edition that came with 14.04 installed and it's not picking up an IPv6 address by auto configuration. Network manager is set to Method: Automatic Running wireshark I ...
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19 views

Troubleshoot personal internet failure, vol. 2

This a follow-up from here: Troubleshoot personal internet failure, where: sudo service NetworkManager restart was proposed. However, Internet failure again today. I did the restart, but this ...
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1answer
152 views

How do I import a saved VPN configuration in 16.04?

I'm using vpn.ht and it provides a configuration file that you download and import for the network manager. Starting with the 16.04 update (I did a clean install), I can't import a saved configuration ...
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1answer
138 views

Can't connect to WPA Enterprise wifi after upgrading from 15.10 to 16.04

After upgrading from 15.10 to 16.04, I can't connect to my university's wifi (eduroam), which uses WPA2 Enterprise security. I'm certain the passwords and settings are all correct, and I had no ...
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30 views

How to check for multiple hidden network SSIDs?

Hypothetical situation: I have 10 identical (snappy ubuntu core) devices in the same room. Every device has an identical list of 10 hidden network SSIDs and password combinations. When turned on, ...
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1answer
186 views

No network connections after 16.04LTS install

On a fresh install dual boot win7/16.04LTS. Internet woirks fine on windows but I have no wired or wireless connection on ubuntu. It would just try to connect forever. I can not ping google, and I can ...
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0answers
11 views

wireless unable to ping after 5-7 hours of iperf testing

I am currently working on an embedded board. The image has been prepared with support of OpenWrt. The athpci driver is used for wireless connectivity. Setup: One of the board acts as an AP and all ...
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0answers
15 views

Kubuntu doesn't want to connect to known networks anymore, only new ones

This problem happened all of a sudden, without an upgrade or so being done. I have had no trouble connecting to networks in the past. Since a few days ago however, I can't connect to existing ...
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239 views

rtl8723be drops wifi connection on hp pavilion notebook ubuntu 16.04

I have recently bougth a HP Pavilion Notebook and performed dual boot with ubuntu 14.04 lts and noted that no wifi networks on first boot. I've searched a lot (really) and did lots of stuff (installed ...
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31 views

Lubuntu 14.04 Network manager issue

Please help me with this outdated problem. I searched the forums and tried everything but I still can't make the network manager appear. Can anyone guide me step by step to check where I messed it up? ...
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2answers
176 views

How to install RTL8723AE driver on ubuntu 16.04?

I'm trying to config ubuntu 16.04 on a MSI s12 notebook, but the network adapter (RTL8723AE PCIe Wireless Network Adapter) is not recognized by ubuntu. $ iwconfig syas: lo no wireless ...
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148 views

Unable to connect the weak wifi signal to Ubuntu 16.04

I have Ubuntu 16.04 installed in my computer, I have Broadcom Wifi in my computer. This wifi is not able to connect to the weak wifi signals around the computer, these are connected by my friends' ...
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1answer
43 views

Set specific network interface for internet access (II)

I am using Ubuntu 14.04 with MATE, and my problem is that when I use a local Ethernet cable to access local network via a router (which is not connected to Internet), and at the same time Wireless (or ...
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1answer
43 views

Unable to understand ifup/ifdown proceedings

I am trying to setup virtual ip for ucarp. But after configuration something strange happens with ifup ifdown as try to view the configurations. I change /etc/network/interfaces like # interfaces(5) ...
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18 views

Conserve public IP access when using VPN

A remote computer with Ubuntu 12.04 LTS has a public IP and has to access computers in my local network. I already have a VPN server launched and the remote computer is successfully authenticating ...
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15 views

Block internet acccess unless VPN is active

I need to connect ONLY through a VPN, so if the VPN is down or the connection to the VPN is lost there should be no routes to Internet available, is this possible? To exemplify: UBUNTU OS MACHINE ...
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21 views

Does NetworkManager Cache Managed Interfaces

Does Network Manager cache which interfaces to manage? I listed eth0 in the /etc/network/interfaces to configure a static IP address but want to go back to just having NM manage it. I comment out ...
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1answer
22 views

Add feature of network manager not working

Network manager in 16.04 will not allow openvpn to be added in the settings screen. The 'add' button does not become 'solid' it stays in a faded state.
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2answers
132 views

UBUNTU DHCP not assigning IP address to clients.

I have a minimal knowledge about ubuntu. I am trying to run a DHCP server on UBUNTU so as to share Dongle 3G Internet. I disabled router's DHCP and followed the following guide to setup DHCP server in ...