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

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Network conn problem when wifi and ethernet are active

I have ubuntu 15.04 64 bit , when the laptop is connected to the house's network using Wifi and ethernet at the same time I don't get network connection . But each one works alone . How can i get ...
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20 views

Has anybody got a fix for Wireless Network Authentication removal of connect button functionality? Denial of Service

I really needs some help urgently here folks as we are without internet that can only realistically be achieve wirelessly due to cable impossibilities. Something happened this evening whereupon both ...
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1answer
34 views

Networking indicator missing in Ubuntu 14.04

Networking indicator missing in Ubuntu 14.04 When I update my system and then restart, my system network indicator is not shown in unity panel. I try to edit: Exec=dbus-launch nm-applet in /etc/xdg/...
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234 views

Wifi keeps disconnecting in Ubuntu 14.04 LTS

I have a Lenovo Y-5070 Gaming Laptop which I purchased in December 2014. I have dual booted my laptop, Windows 8.1 alongside Ubuntu 14.04LTS. It came pre installed with Windows 8.1, but for project ...
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114 views

Create openvpn connection without saving Password

I'm trying to setup an openvpn connection to our production environment using networkmanager-openvpn on ubuntu 14.04. Yes, I know how to do it using sudo openvpn ...conf.openvpn. That's not what this ...
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14 views

Does not shown the network manager indicator and does not get DHCP IP from server? [duplicate]

I was working in Ubuntu 12.04. In that the network manager does not get IP address from server also the network manager icon missing. The nm-applet also missing. Can anyone suggest me how to solve ...
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2answers
504 views

Network Manager (as well as wicd) don't connect to Wifi

I experience an error on Ubuntu 14.04 Trusty Thar with my Wi-Fi. After installing Ubuntu some months ago, I did not have any problems. Just recently I followed this guide on what one should do after ...
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43 views

nm-applet not working in gnome3

I have a problem while installing a new Ubuntu virtual machine running Gnome3. I would like to be able to change network profiles quickly - wired and wireless. In order to do that, I would like to ...
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47 views

List of available networks disappears after 15 seconds Lubuntu 14.04

When I boot lubuntu 14.04, running on my Dell 11 chromebook, if I click on the network manager applet in the panel it lists the 8 or so networks in range. After roughly 15 seconds, all the networks ...
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43 views

How can I require 2.4G band when both 2.4G and 5G are available from an AP?

I have a dual-band WIFI adapter (Intel 7260) on my Linux laptop. The target access point supports both 2.4 GHz and 5 GHz. When I use the GUI interface to connect to that AP, it always connects to the ...
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23 views

ubuntu won't find router ssid/signal

I am using ubuntu 15 & I got several modems and can connect to all of them except for my TRENDnet modem MAC Address D8:EB:97:20:F0:53 it does not show it's signal any more after several weeks of ...
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18 views

Lubuntu crashes after i click on network manager

For whatever reason on lubuntu some reason when I click on the network manager icon my screen sometimes goes black... not sure why, I've tried pressing ctrl alt f1 with no success any ideas?
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1answer
663 views

Why do I get IP 10.42.0.1 when plugging in an Ethernet cable?

For a few months I have the problem on my Ubuntu 14.04 box that when I plug in my Ethernet cable into, I get the IP 10.42.0.1 assigned instead of getting an IP via DHCP. I can fix this problem ...
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2answers
560 views

In ubuntu 15.04 ,wired and wireless are not connected after running sudo apt-get purgr network-manager-gnome network manager

I run command sudo apt-get purge network-manager-gnome network-manager. After running that command wireless and wired networks are not connected to my laptop. And when I look into "system setting->...
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1answer
217 views

No OpenVPN option in new connection dialogue

I am having an issue in 15.04 with NetworkManager vpn connections. I have openvpn installed, but it does not show up in Unity as an available connection type. john@john-desktop:~$ lsb_release -drc ...
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55 views

Not detecting specific wireless network in Ubuntu 12.04?

I have Ubuntu 12.04 installed along with windows 8.1. I recently changed the wireless router at my home and following changes occured: Initially Ubuntu didn't detect my wireless network and but once ...
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1answer
114 views

Cannot connect to wired connection after clean install (both 14.02 LTS and 15.04)

I just built a new PC and successfully installed Ubuntu without any errors. However, I cannot seem to connect to a wired ethernet cable. The ethernet works, because I can plug it into a different ...
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2answers
1k views

Can't connect to PPTP VPN server

I'm facing issues when trying to connect to a windows vpn server. On my win 8 I can connect without problem; when I go to my ubuntu I can't connect to the vpn. It is the same desktop, so the same ...
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87 views

Problem with network-manager. How to clean things up?

It is about a couple of weeks that my network manager it is very annoying to me. What happens is that it tries to connect to a known Wi-Fi network (no matter if with or without authentication) but it ...
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94 views

Gnome network settings - no connections tab

In ubuntu system>network the dialogue shows only General,DNS and Hosts. There is no Connections tab. How can I fix this?
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59 views

Connecting to a VPN only works from the login screen

I setup a new connection through network manager to my work's pptp VPN. When I'm logged into my account, when I select the VPN connection from the network manager applet it does nothing. The error I ...
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1answer
198 views

TCP retransmission to one server, only on ubuntu

Here is the situation: We have couple of computers in office but only two of them have issues connecting to our company website. Both runs ubuntu. It's always like this: I can connect to website 3-4 ...
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1answer
66 views

set static ip problem

I've tried to set this right for some hours, but when I restart service networking, I don't have any ip address at all. My /etc/network/interfaces look like this: auto lo iface lo inet loopback ...
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1answer
162 views

add additional ip in ubuntu 14.04

vi /etc/sysconfig/network-scripts/ifcfg-eth1 DEVICE="eth1" HWADDR="FA:16:XX:XX:XX:XX" BOOTPROTO="static" NM_CONTROLLED="no" ONBOOT="yes" TYPE="Ethernet" IPADDR="157.0.0.101" NETMASK="255.255....
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1answer
257 views

Wireless is not working in Ubuntu 15.04

I have an Intel Centrino N-1030 [raindbow peak] wireless card in my Dell Laptop. I've used Ubuntu on this laptop since 13.04 (I think) and didn't had any kind of wireless issue. I have Ubuntu 15.04 ...
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1answer
304 views

Network Applet has disapeared after an update to 15.04 (unity interface)

I can't see if I'm logged on my wifi lan or internet lan since I update my ubuntu to 15.04 (I use Unity interface). I tried to update to kernel 4.0.3 but it changed nothing. The notification on the ...
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1answer
49 views

Definitive Guide to Wifi Dropping Consistently

This age-old problem seems to never go away. There are thousands of threads related to Wi-Fi dropping constantly. Unfortunately, almost all of them seem to have quick hack suggestions and no real ...
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1answer
388 views

Ethernet Network is disabled in 14.04LTS

When I first used Ubuntu 14.04LTS, I could use the ethernet network option in the network menubar to connect with lan, use the ftp server or browse another pc to share anything. I just need to connect ...
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2answers
2k views

DNS Issue in ubuntu 14.04

I am facing DNS resolving issue sometimes in my Ubuntu 14.04.2 LTS trusty. I have configured my system with network manager to work with static IP assignment. I have also tried by changing DNS server ...
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1answer
187 views

NetworkManager does not start automatically

I used this QUESTION to configure the default of Ubuntu 14.10 to start in RUNLEVEL 1 but when I switch to another RUNLEVEL (2,3,or 5) , there is no network connection and I have to start the ...
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1answer
78 views

How do you make sure that new hostname is successfully broadcast to the network?

I am trying to reset my hostname, but I am not sure if the broadcast is successful or not, is there a way to check? user:~$ sudo hostname newhostname user:~$ sudo dhclient sudo: unable to resolve ...
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1answer
70 views

Apartment Network Issue

Ok so I'm trying to SSH into my home machine from work/school. Problem is, even though I set up my router appropriately, I can only ssh into it when I am in my apartment's network (not my own ...
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1answer
289 views

Reset network settings to what Ubuntu installs

The problem is I messed up lots of files (such as networkmanager.conf) and other because my laptop was not connecting to an ad hoc network, it connected to other hotspots like my androids shared ...
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1answer
125 views

Reconnecting interface from nmcli

I'm writing application in which I have to disable all network interfaces. Because nmcli nm enable false is only temporary (and autoconnects after some time), I use nmcli dev disconnect iface [...
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1answer
335 views

Can't connect to my dsl connection in ubuntu 15.04

After the recent upgrade, when I tried to connect to my dsl, it shows like this.. Connection activation failed. (1) Creating object for path '/org/freedesktop/NetworkManager/ActiveConnection/5' ...
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1answer
578 views

Xubuntu's Network Manager cannot detect wifi on Lenovo G450 laptop

I just recently installed Xubuntu 14.04 on dual boot in my Lenovo G450 laptop. For some reason, I can only connect to the internet on an ethernet cable since the Network Manager fails to detect any ...
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2answers
1k views

Connect button grayed out in 802.1x authentication dialog

Since I upgraded to 15.04 I can't connect to our office wired network anymore since I can't press connect in the authentication dialog.
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1answer
185 views

Xubuntu - missing checkbox “connect VPN automatically”

I'm trying to make my VPN connect automatically (on startup or when I got disconnected from Wifi) and most of users have a checkbox directly in network-manager. I don't. I thought I have old network-...
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1answer
95 views

Ubuntu 14.04 ethernet connection using graphical network manager

I am trying to connect Ubuntu 14.04 to the internet with an ethernet cable. I have turned wireless off. The cable works off a Windows laptop that I am using now. When I plug in the cable 'wired ...
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19 views

how to change my network configuration files to fix “failed to fetch” error [duplicate]

I'm very new to linux, and every time I try to sudo apt-get something, it gives me the error described in this forum: A "failed to fetch" error occurs when apt-get update is run. How do I ...
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1answer
667 views

14.04 - Unable to connect Windows PPTP VPN

I am trying to connect a Windows PPTP VPN. I created VPN connection through the Network configuration in the Settings. I configured VPN credentials such as gateway, username and password. Nothing ...
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1answer
235 views

VPN Not working, PPtP

today I was trying to set up a VPN. I have all the credentials and everything entered, but every time I try to connect, it says this. Here are the pictures for the steps I take to recreate this ...
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1answer
48 views

A new connection is generated instead of using the new settings

I am trying to set up a static IP address using the nm-connection-editor tool. I select the currently-used wireless network, click edit, go to "IPV4 Settings", click add, enter a valid IP address, ...
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2answers
1k views

Laptop can't find my home wifi network

The laptop has Ubuntu 14.04, it shows neighbors networks and it was working fine before. My phone and desktop connect to my home Wi-Fi with no problems. This has happened a few times before but in ...
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1answer
600 views

wlan1 interface disappeared from ifconfig

I was trying to make a virtual interface on my wlan1 card (like set hostednetwork from windows) by editing /etc/network/interfaces: auto wlan1:0 iface wlan1:0 inet static address 192.168.4.1 netmask ...
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1answer
174 views

Wifi struggles mightily to connect, initially

I get reams and reams of this, then something catches, and I'm fine. This is Ubuntu 14.04.2 LTS lspci output: 01:00.0 Network controller: Qualcomm Atheros AR9462 Wireless Network Adapter (rev 01) ...
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1answer
94 views

How can I get a Wi-Fi network support after he cut the connection. can not connect to the network again until restar I have kubuntu 14,04

How can I get a Wi-Fi network support after he cut the connection. Because when it starts laptop it normal after 3 or 4 minutes to work the network connection stays stopped for a few minutes and then ...
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2answers
281 views

multiple Ip's bind on same port

I run multiple game servers so i added my additional ip's to the server. I made sure that the game servers ip are different but I still cant start the others server cause the ports are conflicting. $ ...
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1answer
131 views

aphotspot is working but my android device cant connect to the ssid

I am new to Ubuntu 14.10,I Have successfully created WLAN-Hotspot on my laptop. I have entered the password on my android phone and It was stuck at obtaining IP address for tethering. I have tried ...
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2answers
1k views

nm-applet wifi-issues on Lubuntu 14.04

on my 64bit installation of lubuntu (lxde) nm-applet has been working fine but since my latest installation of several updates (haven't updated for some weeks) it seems something broke and i can't ...