Managing and using network connectivity on a Ubuntu system

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No wifi networks detected

I just got an older macbook air from a friend and it was running a bit slow so I decided to use Ubuntu! I have used Ubuntu in the past but I'm sort of a newbie so please bear with me. When I ...
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juju deploy fails with “lookup store.juju.ubuntu.com: no such host”

I have a MAAS setup (using KVM) with 1 MAAS controller and 1 server node. I could "juju bootstrap" successfully and following is the output of "juju status" vishal@maas:~$ juju status environment: ...
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ubuntu 12.04 booting freezing on “Booting system without full network configuration…”

I have Asus laptop with Ubuntu 12.04 on it, the problem start after I change the permission of /etc which result that I can't execute the sudo commands when I tried to change the permission I got this ...
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nm-applet disappeared from top panel Ubuntu 14.04

Can someone please tell me what this error is? (nm-applet:2819): nm-applet-WARNING **: Could not find ShellVersion property on org.gnome.Shell after 5 tries ^Cnm-applet-Message: PID 0 (we are 2819) ...
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Xorg high cpu usage when wireless connection is active

I use Xubuntu 14.04 LTS 64-bit (3.13.0-43-generic) on a low-end notebook (AMD C-70, 2GB RAM, RTL8188EE) and a router D-Link DSL-2640B. The wireless connection looks fine, but it is impossible to use ...
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1answer
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Waiting 60 more seconds for network configuration [duplicate]

My laptop (Ubuntu 14.04) is taking too long showing a message "Waiting 60 more seconds for network configuration"
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Network fails and won't reinitialize Ubuntu 14.04

I have a freshly installed Ubuntu-Server 14.04 instance. Nothing is installed yet other than the base system, OpenSSH server, and LAMP server (as selected in the install process). It is connecting ...
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What does this mean? [duplicate]

E: Dynamic MMap ran out of room. Please increase the size of APT::Cache-Limit. Current value: 25165824. (man 5 apt.conf) E: Error occurred while processing octave-io (NewVersion1) E: Problem with ...
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1answer
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Ubuntu 14.04 LTS wireless not working

So I have Ubuntu 14.04 LTS installed on my Dell studio 1555 and my wifi was working before but after a recent update and upgrade, it stopped working. Here are the contents of my wireless-info.txt file ...
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1answer
19 views

Forwarding ports with iptables not working?

I have an ubuntu server (14.04.1) which is asking as a router for my network. It has an internet facing interface, eth0, and a second interface, eth1, for connecting to my 10.0.0.0 network. I am ...
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Where are my iptables?

I ran the code: iptables-save -t nat -A PREROUTING -d 79.3.191.226 -j DNAT --to-destination 192.168.0.14 But I don't know if it worked since I cannot find the iptables file inside my directory. ...
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How do I configure internet connection for Terminal on Ubuntu 14.04?

I've installed on Ubuntu 14.04 and with I've Broadband connection setup, Browser connection is OK, but Terminal not connection via internet, when command type "sudo apt-get update" by terminal then ...
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cannot connect to websites by their domain name but ip addresses

I looked at the related questions but I still don't have an answer. My initial problem was transmission not connecting to any peer, I applied some suggestions, after half an hour I realized that I ...
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1answer
18 views

wireless interface gone after installing systemd 218

I Installed systemd-218 from the sources. After that I rebooted the system. Now I am unable to see any wireless interface. I tried reloading the ath9k driver. But no luck. The lsusb commands output is ...
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MAAS Network question - Node cannot ping to outside world (ip shows up correctly)

Hello AskUbuntu community, For the past few days, I finally jumped on the MAAS train but encountered a few problems with network configurations. I do apologize if I have missed some fundamental ...
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52 views

Ubuntu 13.10\14.04\14.10 wireless problem

I'm having problems with wireless in Ubuntu 13.10\14.04\14.10, sometimes when i start-up my laptop i can't find my WiFi and after i restart it works just fine but after sometime it drops the ...
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Establish reverse ssh tunnel at OS startup / network connection up [migrated]

I'm trying to setup a reverse SSH tunnel using a middle-man, due to firewall restrictions. I took the following steps: from ssh server do reverse tunnel: ssh -R 8080:localhost:22 ...
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Why is Linux better? [on hold]

What are your opinions as to why Linux is the boss. Also which distro do you prefer for personal use?
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18 views

Internet connection slowing down till stop

I've just installed Ubuntu 14.04 as second OS on my PC and I'm having a strange issue. When I try to connect to internet I notice a progressive slowing in the network speed till it completely stuck. ...
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Cannot get my N300 (DWA-130) D-link wireless USB to work on Ubuntu 14.04

I'll start by saying i'm pretty new to linux, go easy on me ! I've downloaded Ndiswrapper and tried installing the windows XP/Vista driver... But iwconfig shows that there is no extensions.. I've ...
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1answer
19 views

Cisco VPN not working although it says connected

I am using Ubuntu 14.04 and I am trying to connect to my university network via VPN. I installed Cisco VPN and seems to be working normally. I connect to the network and it says connected, but when I ...
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1answer
30 views

Can't connect to WiFi after suspend

After resuming from suspend, the Network Manager detects my WiFi signal, but eventually gives up when trying to connect to it. These fixes did not work: $ sudo restart network-manager $ sudo nmcli ...
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mount.nfs connection timed while connecting with utlp kit (as a client)

![enter image description here][1]scenario of my problem is as follows: I have created /naveen/shared direcrory inside the UTLP. I have created /home/mtlc/Desktop/rootfs inside the UBUNTU PC. ...
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how to rebuild a wifi driver

I have a hp laptop and the wireless chip-set is a rt5390. i know that a lot of people are having issues with the wireless connection but from what i have been reading when people have rebuilt the ...
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Wifi issuse, first time user

I finally built a PC of my own and I created a duel booting system. (Windows 8 and Ubuntu) Win 8 works flawlessly but Ububntu is the most infuriating thing I've ever dealt with. I can't access the ...
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Wifi problem with RTL8723ae on Ubuntu 14.04

I have the same notebook and problem as the person here: Wifi problem with Ubuntu 14.04 and RTL8723ae I have tried everything including the suggestions provided there (I installed the non-free ...
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Accidentally deleted everything associated with wifi connection (I think)

I Just returned from a long trip to remember that right before I left I really messed up my wifi connection. I deleted the applet, nothing pops up when I try to "add to panel" or look for wifi in ...
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Configure Wi-Fi Network Preferences in Ubuntu based on Signal Strength?

I use about 6 different wifi networks, depending on my location. At one location, we have two networks that are the same, but through a network range booster. Unfortunately, this poses the problem ...
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How do I can configure Firefox and Terminal via internet Ubuntu 14.04?

I've installed Ubuntu 14.04 and with I've broadband connection setup but it's only some application via internet , But I can't access Firefox and Terminal via internet see screenshot , when Firefox ...
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How to perform detail packet capture on Ubuntu firewall?

I've routed internet traffic of my other systems on this ubuntu linux system where I have configured packet forwarding. but still I am unable to get internet on other systems. Hence I want to ...
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Remote Desktop server that runs on single desktop

I want to be able to remotely connect to a friend's computer when he needs help and control his desktop. Chrome Remote Desktop is too slow because of the use of Google's servers instead of directly ...
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1answer
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What Type of Network Connection for IP for Nautlus

I am using LTS 14. I am trying to figure out how to Network a device. I don't know what kind of network it is for a location of: 10.10.10.254 with a username/password. Does anyone know what type it ...
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How do I configure proxy on Ubuntu 14.04?

I've installed Ubuntu 14.04, and with I've setup broadband connection, windows 7 allow all internet access, but Ubuntu 14.04 some application access via internet, I can't access Firefox browser and ...
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Ubuntu 14.04 - scanimage - invalid argument

It seems my Brother MFC-9120-CN is not detected whenever I want to scan an image. The printer works fine, however. The device is directly connected in my local network. ➜ ~ scanimage -L device ...
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ASUS X550C wifi

There is a lot of similar problems, but this one is a bit different. I have no phy0: Wireless LAN Ubuntu: 14.04.1 sudo rfkill list all 0: asus-wlan: Wireless LAN Soft blocked: no Hard ...
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No wifi after fresh 14.04 install

I've installed a fresh version of 14.04 over my last install. Now I'm unable to connect to any wifi network as there is no wifi network option available under networking.
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wifi wont connect ubuntu 14.04

I know there are so many questions answered on this topic already. I've been researching for a few days now. but none seem to work or are for different drivers. please help me fix this issue. I ...
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Can my network use Ubuntu Openstack?

I have a small network of computers, I am migrating from Arch Linux to Ubuntu's OpenStack Platform for usability reasons. The reason I am asking is because of the following: Installing Ubuntu ...
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Network connection problem in ubuntu 14.10

I have just installed Ubuntu 14.10 but not getting Internet connection. Our Internet connection is based on broadband connection provided by our college as a WiFi mode. I saw this on another forum ...
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Wireless Parental Computer Control

I have recently convinced my brother to join the Linux side. He has 4 kids and wants to me to connect his desktop with their systems for monitoring purposes. What would be the best way for him to find ...
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Route subnet requests from wlan0 to eth0 on Ubuntu 14.04

My raspberry pi is connected via Ethernet to my Ubuntu 14.04 machine (192.168.1.0/24 on eth0). This machine is connected to the Internet through a Fritz Box WLAN Router (192.168.0.0/24 on wlan0). The ...
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Does Ubuntu with Linux 3.5 having TX RX ring buffers or BQL

My uname -a command outputs: Linux Davinci001 3.5.0-23-generic #35~precise1-Ubuntu SMP Fri Jan 25 17:13:26 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux So, does NICs with Ubuntu machine is working ...
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Ubuntu File Sharing via Samba: cannot add files to share folder: claims permission denied. Any suggestions?

I am a newbie to Ubuntu. Apologies if this has been asked before: I did try to do some research, and between many websites and trying to find it on here, I haven't had much luck. I'm sorry if I ...
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Error connecting Qt Cretaor to Raspberry Pi using ssh

I have generated a image for the raspberry pi board using buildroot 2014.11, but while connecting Qt Creator via ssh to raspberry pi board it shows the following error. Connecting to host… SSH ...
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Intermittent and very poor wifi connection on Ubuntu 14.04

I have a brand new desktop PC with Ubuntu 14.04 OS. The Wifi (Using dongle, Mobile Broadband) connection is extremely poor and intermittent. Please suggest solution to fix the issue. Thanks. I was ...
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1answer
48 views

Ubuntu 12.04 no wlan0 interface

I installed Ubuntu 12.04 on an Acer e5-571-31KM. Dmesg and lspci output indicate a wireless Network adapter was found, but according to ifconfig there is no wlan0 interface. Unfortunately I have no ...
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network isuses stays conected but if i use transmition or steam to download somthing internet stops working

If I use transmission or steam to download somthing steam will say not conected and transmition stops download and says unknown and all net functions stop bit it stays conected but this only happens ...
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Does ubuntu wifi sharing process support samsung Galaxy Tab 2 10.1?

:) Lately, I have been trying to share my internet to my android tab(Samsung Galaxy tab 2, 10.1) via Wifi hotspot. What I did: I have used KDE network manager to create a wifi(shared) profile with ...
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Ubuntu 14.04 Wired Network Connection does not work

Running Ubuntu 14.04 on my laptop I can connect to the internet wirelessly no problem but when I try to connect to the router via a lan cable I am unable to get a connection. It seems I am unable to ...
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31 views

find and connect to wireless camera

I've got an old wireless camera/baby monitor... (4 years old) Worked with an old windows machine that quit some time ago. On the old windows machine it connected via a wireless dongle and software ...