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

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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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25 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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26 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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27 views

wireless connection asking password for every connection fail

My system knows the password for a wireless ssid, and it is connected too. but whenever the wireless connection is disconnected it should always try connect to it, but after three or 4 attempts it is ...
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44 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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22 views

Network Start error

I use Ubuntu 14.10 desktop X64 and when I switch from single usermode to init3 mode I face no network connection so i use the command NetworkManger to start it but I get this error ...
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49 views

Enable eth0 without plugging cable to connect to virtualbox bridge

I'm using Ubuntu 15.04 with NetworkManager. I have internet connection on wlan0(dhcp, 192.168.1.0/24) and static ip on eth0(local network, 192.168.124.1/24). On my virtual machine in VirtualBox i ...
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28 views

Duplicated wpa_supplicant after upgrade to 15.04?

I've noticed a weird behaviour after upgrading to Ubuntu 15.04. It seems like there are two devices connecting to my home WiFi network - and when a "wrong" one connects, the "real" one cannot connect ...
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32 views

Why does connecting to a WiFi network fix DNS settings on another network interface?

I use EasyTether for USB tether to my MBA running Ubuntu 15.04. The steps to do this used to be: easytether connect sudo dhclient easytether0 At some point (probably after the upgrade to 15.04, ...
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2answers
59 views

Minimal Display Manager sought

After getting a 3G modem for my laptop, I've started using Network Manager to manage my connections, and I quite like it. However, it is slightly annoying to have to be root to make any changes, ...
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1answer
20 views

Separate Ethernet card from Network Manager's management

I have Network Manager on my 14.04 laptop. It currently manages the networking. Unfortunately, I don't want Network Manager to manage the Ethernet card, eth0, and I just want it to handle the ...
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23 views

Why does my eth0 interface always shows the same inet addr in different LAN

Problem in my Ubuntu 14.04 is eth0 interface always shows the same inet address regardless of network in which I am and the name of the interface has also changed from eth0 to eth1 due to some unknown ...
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1answer
48 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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2answers
287 views

How to know what DNS am I using in Ubuntu 14.04

(A follow up to similar question for 12.04.) Prior to Ubuntu 12.04, you may see the active DNS in /etc/resolve.conf. In Ubuntu 12.04, NetworkManager no longer works with the file. You have to ...
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2answers
53 views

How to reset Network Manager to default?

This is what I have in my network menu. I've tried many workarounds from deleting entries to all that. Can you suggest any solutions?
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27 views

Nagios is not showing maps and hosts in web interface

After performing a system reboot, Nagios is not displaying hosts and maps options in the nagios web console. How can this be resolved?
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93 views

Can't get ethernet connection to work with 'Intel Corporation 82579LM Gigabit Network Connection (rev 04)' on Ubuntu 15.04

I am trying to get ethernet connection to work on a hp compaq 8200 elite sff computer, but with no success so far. When i plug in an ethernet cable, the network icon starts the searching animation, ...
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2answers
34 views

I can't connect to new router with same ssid

I have a problem with my wifi in Ubuntu (15.04). Recently, I have changed my wifi routers. Due to differents devices that was already configured, I have configured the new router with the same SSID ...
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40 views

Ubuntu 14.04 - Modify OpenVPN files manually

I am using a VPN (Private Tunnel) to download stuff / play games at dorms (ports are blocked, VPN allows me to bypass that). I also am trying to create a script in python that allows me to create new ...
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1answer
47 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" ...
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1answer
33 views

VPN - short read (-1): 'Message too long'

So I'm trying to use my VPN at a hotel wifi where I'm on a vacation, but for some reason I get this annoying problem. When I connect to my VPN in about a few seconds it breaks, and syslog shows: Jun ...
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1answer
22 views

Wifi keeps on dropping in Ubuntu 12.04?

I am using ubuntu 12.04 and I am having issues with my wifi. Every five the connection drops in my laptop(it shows that it is connected to the network but the internet connection is not there) and I ...
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37 views

I cant use my Mullvad VPN on ubuntu?

I have opened the mullvad client and put in my account number that they gave me. I have also paid through bitcoin for a vpn and on their website it says that it has been received but on the terminal ...
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17 views

Open NAT with ICS

I've been trying for days to achieve an open NAT with ICS ubuntu 14, It is open when I use windows 8 to bridge but I wish to move over to ubuntu but this is stopping me connecting to friends online ...
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76 views

How do I set a preference for 5GHz over 2.4GHz Wifi in Lubuntu 12.04?

The 5GHz network is less congested than the 2.4GHz. My first choice would be to have both networks available but prefer 5GHz. My second option is to disable 2.4GHz so b/g/n networks are unavailable. ...
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1answer
83 views

I can't connect to wireless network

I was trying to connect to wi-fi with lubuntu but I could not, I don't know exactly what is the problem, I used nm-applet and that was the result: nm-applet ** (nm-applet:13926): WARNING **: ...
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1answer
23 views

wicd-curses errors on fresh default 14.04 install

I have a brand new fresh 14.04 ubuntu install but cannot get wicd-curses to run. I can use wicd-gtk but I need wicd-curses to work as well. ERROR ~ sudo wicd-curses [sudo] password for ry: ...
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1answer
36 views

How can I route between different network using multiple ethernet card?

I have two ethernet card in the PC, eth0 is connected to the local network(192.168.0.0/24), and the other is connected to the internet. I can reach all the devices which are connected to this ...
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64 views

ubuntu 14.04 VPN: <info> VPN plugin state changed: stopped (6)

I'm trying to connect with vpn to work I get the following: Jun 11 17:48:11 MYLAPTOP NetworkManager[1104]: <info> Starting VPN service 'vpnc'... Jun 11 17:48:11 MYLAPTOP NetworkManager[1104]: ...
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37 views

Network Manager: Failed to determine AP security information

When I isseu the following command: $ nmcli dev wifi connect apname # or $ nmcli dev wifi connect macaddress It throws the following error: Error: Failed to add/activate new connection: (32) ...
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2answers
52 views

Is there a way to force use of one particular DNS server among multiple listed?

Before pushing new configuration changes on our DNS servers, I like to test and verify on a 'test' server before applying the changes on our 'production' servers. So this is my deck network config : ...
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68 views

Vpn problems with Ubuntu 12.04 are driving me mad. What further issue(s) could be contributing? And how do I fix it?

I'm using Ubuntu 12.04 and have had to manually configure my vpn since the network manager just wont connect for unknown reasons. Additionally I cannot use openvpn or vpnc as I don't have assess to a ...
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71 views

Sharing wireless internet connection through wired access point

I'm not really competent in networking so some of this might be trivial and/or downright stupid but here I go. I have an access point (Netgear N150) that I use to create a WiFi network shared by ...
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25 views

Troubleshooting 2 network cards Ubuntu 10.04 ltsp server

I have run the installation twice in the past few hours. I already have both network cards installed, have checked resolv.conf,nm-network....conf,networkManager and /network/interfaces; all the ...
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8 views

Does the Linux Kernel support MobileIPv6 ?

I am working on MobileIPv6 and want to know if the Linux Kernel supports MobileIPv6 protocol? If yes, which version of the kernel? Also I want to know if there is a MobileIPv6 implementation similar ...
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57 views

Wifi not working for a Particular wifi network

[edit] I freshly installed ubuntu and my wifi stopped connecting to a specific wifi network. Similar to this problem : WIFI not working on one specific wifi network I can connect to any wifi network ...
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1answer
129 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
61 views

Spoofed MAC address - Internet disconnects

I have spoofed my ethernet MAC address using the "Edit Connections" option (available under the network) as well as by using macchanger. But I'm facing an issue of frequent disconnections, i.e. the ...
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1answer
78 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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27 views

why my wired network often fails

my ubuntu version is 14.04, and I use manual ip address. eth0 Link encap:Ethernet HWaddr f8:bc:12:9b:a5:8d inet addr:192.168.9.30 Bcast:192.168.9.255 Mask:255.255.255.0 inet6 ...
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270 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 ...
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3answers
242 views

kubuntu 15.04 wifi problem (lenovo T420)

I have a Lenovo T420 laptop, I have recently upgraded from kubuntu 14.4 to kubuntu 15.04 and since then I have problems with wireless connections, when trying to connect to a wireless network that I ...
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1answer
44 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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0answers
49 views

VPN connection can be created, but cannot be enabled

I've successfully created different VPN connections for L2TP and PPTP. They both can be seen in the tray, but they're greyed-out, so cannot be picked. network-manager-pptp, pptp-linux and ...
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1answer
78 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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1answer
81 views

iwlist set essid -> Operation already in progress

I am trying to connect to an AP with iwconfig in the command line: sudo iwconfig wlan0 essid "APname" Every time I execute it, I got the following errors: Error for wireless request "Set ESSID" ...
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61 views

Connect to network - network is unreachable

Although I am able to browse the net just fine I keep getting network unreachable when I run a download using my Java program. It was working fine till yesterday but now it is suddenly giving me ...
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1answer
41 views

ubuntu wireless connected but wont load websites - 14.04 LTS x64

I'm a beginner when it comes to linux and i've already read through and tried out everything i have found in countless other threads. So keep in mind that i might have made more problems for myself. ...
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1answer
39 views

Why is the content of /run/resolvconf/interface/NetworkManager changed every time I reboot?

I have some issue with my dns configuration, so I googled and picked up a solution by 1) editing /run/resolvconf/interface/NetworkManager and 2) running sudo resolvconf -u. This helped a little ...
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2answers
365 views

Network manager must be restarted after wakeup in Ubuntu 15.04

Upgraded from Ubuntu 14.04 to 15.04 on my lenovo T410 a couple of weeks ago and I have been having some problems with my network connection ever since. Everything worked fine with 14.04, but now I am ...