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• dhcp configuration not working ubuntu 11.10

  - by Vivek Pradhan

  I am usually behind a proxy server in college so I connect to the ethernet or wifi using manual IPv4 addresses only inside college. I have been trying really hard to get the internet work at home, there is no proxy and I have set the network to use automatic dhcp. It seems like it is not able to connect to the port, It gets disconnected after some time automatically and then tries to reconnect. The same thing is happening with wifi networks also, after some time i see a pop up asking for authentication and ultimately its not able to connect. What might be the problem here. I looked up some similar questions and checked the /etc/network/interfaces file and looks like this: auto lo iface lo inet loopback I have no idea what those lines mean but there is no configuration for eth0 or wlan0. Any help is deeply appreciated. Ubuntu loses it charms due to these small glitches.

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• Manually activate Network Manager Applet

  - by diosney

  The issue I've is that when I connect via modem through gnome-ppp the Network Manager Applet don't detect a connection and don't let me use the configured VPNs via its interface. How Can I manually activate the Network Manager Applet? What I need is to enable the Network Manager apple in order to use the "VPN Connection" section of the GUI. When I don't have an ethernet cable connected and I connect through a modem the Network Manager applet doesn't enables itself, it is like if don't recognizes the ppp0 interface. My question is: there is a way to force the Network Manager GUI indicator to make it "alive"/"up"/"enabled" in order to use the "VPN Connections"section? Thanks in advance.

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• Ubuntu 12.10 - VirtualBox not sharing internet with guest system

  - by Fernando Briano

  I went from ArchLinux to Ubuntu on my dev box. I use VirtualBox to test web sites on Windows and IE. I have my Windows 7 VirtualBox image running on Ubuntu's VirtualBox. Back with ArchLinux, internet worked "out of the box" on the Windows boxes. I left the default options on the box's Network Options (NAT). The Windows machine shows as "connected to ethernet" but reports: The dns server isn't responding So I can't access Internet from there. I tried searching for Ubuntu's official docs but they seem pretty outdated. I tried using my old boxes from Arch (which boot normally but have no internet) and creating a new box from Ubuntu itself, but still get the same results. Update: I'm using VirtualBox 4.1.18 from Ubuntu's repository (apt-get install virtualbox).

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• Management Software in Java for Networked Bus Systems

  - by Geertjan

  Telemotive AG develops complex networked bus systems such as Ethernet, MOST, CAN, FlexRay, LIN and Bluetooth as well as in-house product developments in infotainment, entertainment, and telematics related to driver assistance, connectivity, diagnosis, and e-mobility. Devices such as those developed by Telemotive typically come with management software, so that the device can be configured. (Just like an internet router comes with management software too.) The blue AdmiraL is a development and analysis device for the APIX (Automotive Pixel Link) technology. Here is its management tool: The blue PiraT is an optimised multi-data logger, developed by Telemotive specifically for the automotive industry. With the blue PiraT the communication of bus systems and control units are monitored and relevant data can be recorded very precisely. And here is how the tool is managed: Both applications are created in Java and, as clearly indicated in many ways in the screenshots above, are based on the NetBeans Platform. More details can be found on the Telemotive site.

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• Wireless connects but can not connect to internet

  - by Dan

  I'm using Ubuntu 11.04 and I'm having trouble connecting to internet via wifi. Ethernet cable works though. So when I log on it auto logs on to my wifi connection at home but after about a minute or so it gives me a popup: network disabled something about .local domain and something about Avahi network (sorry if you need more on what the popup says I will reboot and look at it again). I am using Atheros wireless card. My laptop is Asus G73SW and on the forum at notebookreview.com G73SW Owner's Lounge people said they had no problem with connecting via wifi from install. Please help me because I would love to keep using this beautiful OS.

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• VirtualBox: Import on different platform

  - by katsumii

  VirtualBox behaves almost the same on different OSes but the default network name for host-only network is different.The picture below is from Windows. On Linux, it will be named "vboxnet0" by default.This causes a problem on cross-platform export/import and it's already reported.#7067 (VERRINTERNALERROR: Inexistent host networking interface, named 'vboxnet0') – Oracle VM VirtualBoxVERR_INTERNAL_ERROR: Inexistent host networking interface, named 'vboxnet0'There are at least 2 workarounds.Open the imported VM in VBox GUI and pick correct network.Run CUI command like below. This one is for Windows.VBoxManage.exe modifyvm node1_1  --hostonlyadapter1 "VirtualBox Host-Only Ethernet Adapter"

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• System freeze after opening Wi-Fi menu can boot into the machine and use Internet in recovery mode

  - by Michael

  So right now sitting in front of my Alienware area 51 desktop. It has a Broadcom Netlink BCM 5784M gigabit ethernet PCI E card. Most of the time able to get through the login screen and to the main screen if I click on the wireless settings on the top right-hand corner the system immediately freezes the cursor does not move at all keyboards are unresponsive. I was doing some quick Google searching and I found a suggestion to boot into recovery mode I did this and did a apt-get Distribution update which ran successfully installed then I rebooted into the regular system same thing I'm pretty sure it's the network card because even if I don't click the settings if a network related dialog opens such as disconnection or connection the system again immediately freezes. I'm running Ubuntu 13.04 ** update 1 ** Just was able to use my system for a little bit however when I went into Firefox and hit the web it again froze so obviously a driver problem but I'm not sure how to get drivers for Broadcom which apparently according to the description on stack-overflow is terrible Any ideas? Sorry for lack of punctuation on an ipad.

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• ubuntu 12.04 internet stopped working

  - by Daniel

  My laptop was running smoothly until yesterday. Today, I can't connect to the internet at home anymore. I am only able to access the router, but no internet access. A have a Dell Latitude E6320 with ubuntu 12.04. At my job, I don't have any problems connecting this laptop both via wireless and ethernet. At home, if I try connecting it through Windows it does work fine. I even checked the MAC addess and it's OK. My other laptop, which also runs ubuntu, is not facing this problem. I have already tried to restart and downgrade network-manager package and its dependecies. Anyone can help me please??? I am affraid I will have to reinstall everything...

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• Internet stopped working suddenly on 12.04

  - by Daniel

  My laptop was running smoothly until yesterday. Today, I can't connect to the Internet at home anymore. I am only able to access the router, but no Internet access. A have a Dell Latitude E6320 with Ubuntu 12.04. At my job, I don't have any problems connecting this laptop both via Wireless and Ethernet. At home, if I try connecting it through Windows, it does work fine. I even checked the MAC address and it's OK. My other laptop, which also runs Ubuntu, is not facing this problem. I have already tried to restart and downgrade network-manager package and its dependencies. Can anyone help me please? I am afraid, I will have to reinstall everything.

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• How to install Edubuntu on a system with low memory (256 Mb)?

  - by int_ua

  I'm preparing an old system with 256 Mb RAM to send it to some children. It doesn't have Ethernet controller and there are no Internet access at the destination. I've chosen Edubuntu for obvious reasons and modified it with UCK trying to minimize memory usage just to install, let alone using it yet. But Ubiquity won't start even in openbox (edited /etc/lightdm/lightdm.conf) because there are no space left on /cow right after booting. I've already deleted things like ibus, zeitgeist, update-manager (no network access after all), twisted-core, plymouth logos. I'm thinking about creating a swap partition on HDD, can it be later added to expand this /cow ? Is there a package for the text-mode installation which is used on Alternate CDs? I don't want to re-create Edubuntu from an Alternate CD. This behavior is reproducible in VM limited to 256Mb RAM.

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• Ubuntu 12.04 lts cannot build a wireless connection

  - by Jupiterr

  Hi i just got a new notebook and it came with ubuntu 12.04 lts operation system. But it can't make a wireless connection. I plugged in my Ethernet cable and i can reach the Internet with it but I need wireless connection so much. This is the first time I'm using ubuntu so i'm really confused. I can see wireless networks (including mine) but i cannot use them. It seems like it's establishing a connection but soon it gives up. Please help, I don't have much time for this and I do not have any idea about operation systems.

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• "Operating system not found" after upgrading to 13.10

  - by Hongbo Zhu

  I own a Thinkpad X121e and I upgraded its Ubuntu from 13.04 64bit to 13.10 64bit using the Update Manager. When the upgrade process suggested to restart the system, I restarted the computer and now it says "Operating system not found" after a very brief splash screen. The splash screen says something like (too brief to see everything): Intel UNDI, PXE-2.0 ... For Atheros ethernet Controller ... Check cable connection! PXE-MOF: Exiting INTEL PXE ROM I prepared a startup USB disk using Ubuntu 13.10. I tried the startup USB and it works very well on other computers. So I changed the booting order of X121e and tried all three USB slots, all said "Operating System not found" without any splash screen. I also tried using startup USB with 12.04 LTS. Same results. I do not really want to reinstall the system now. Any hints on how to proceed?

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• Slow wireless about 1/3 bandwidth of wired from cable modem

  - by Rhino

  HP DV6000 Wireless G Broadcom Netgear WNDR3400 router properly configured. Windows laptops using wireless G and N are considerably faster than mine. 12.04 LTS, all restricted drivers and all up to date. 50Mbps wired and 9-21 Mbps wireless on Ubuntu. 00:14.0 Bridge [0680]: NVIDIA Corporation MCP51 Ethernet Controller [10de:0269] (rev a3) Subsystem: Hewlett-Packard Company Presario V6133CL [103c:30b7] Kernel driver in use: forcedeth 03:00.0 Network controller [0280]: Broadcom Corporation BCM4311 802.11a/b/g [14e4:4312] (rev 02) Subsystem: Hewlett-Packard Company Broadcom 802.11a/b/g WLAN [103c:1370] Kernel driver in use: wl

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• How can a Cisco Aironet wireless card connect to a WPA encrypted network?

  - by Aibara Iduas

  I have a Thinkpad T40 running Ubuntu 10.10. I want to connect to wireless networks with WPA encryption; they appear in the network list, but are grayed out. The card does support WPA, since it works in Windows. In 10.10 the wireless works just fine with unprotected and WEP networks, but cannot connect to any WPA networks. The card is a Cisco Aironet Wireless 802.11b. I've been reading a lot of forum posts trying to find a solution, but either encounter threads where no solution was found or answers longer apply (most date from 2007, since this isn't the newest of computers). Here is the output of sudo lshw -c network: *-network:1 DISABLED description: Wireless Interface product: Cisco Aironet Wireless 802.11b vendor: AIRONET Wireless Communications physical id: 2 bus info: pci@000:02:02.0 logical name: eth1 version: 00 serial: 00:02:8a:78:6a:44 width: 32 bits clock: 33MHz capabilities: pm vpd bus_master cap_list rom ethernet physical wireless logical configuration: broadcast=yes driver=airo latency=64 maxlatency=4 mingnt=4 multicast=yes wireless=IEEE 802.11-DS Thanks, any help would be greatly appreciated!

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• Atheros AR5BWB222 Wireless Intermittent Connectivity

  - by Bart

  So I recently installed Ubuntu on my Acer Aspire V3-551 laptop. I have an Atheros AR5BWB222 wireless adapter. Everything works fine except for the wireless. I can sometimes connect to the wireless, but most of the time it will be making an attempt to connect and then enver connect. Or it will connect, but it will only stay connected for about 10 seconds before getting disconnected from the wireless. All the other drivers updated through System SettingsAdditional Drivers are fine, even the Ethernet. Its just the problem with the wireless. I've tried a power managment setting, tried looking for additional updates, but nothing fixes my problem. Is there any solution for my particular wireless card?

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• Set up Trendnet TEW-638APB Access point on Ubuntu 14.04

  - by Mr. Smileys

  I have a computer running Ubuntu 14.04, it has 2 Ethernet ports. I would like to set up this computer so that the internet comes in on one of the ports and is then shared through the other port with the Trendnet wireless access point that my other devices would connect to and use the internet. I have looked online for information on setting this up but have not been able to find anything. If someone could point me to a guide that would help me or just tell me how to do this in an answer I would really appreciate it. please help me to solve this problem

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• Disabled WiFi but it keeps re-enabling itself; want it to stay disabled

  - by Mike Uresti

  I have an Alienware X51 desktop with a wireless card, I have it connected via ethernet and want to permanently disable WiFi from ever using itself. When running Windows, I go to device manager and rightclick-disable the Wireless card and that takes care of my problem. Is there a similar method using Ubuntu 14.04? For now, I click on the network icon in the system tray and uncheck 'Enable wifi' but it seems to turn itself back on as I use my computer, I think I have the incident isolated to something with Steam. It seems like after I start the Steam client it always is re-enabled. Hopeful answer: Just disable/remove/block wireless card from ever working.

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• Wireless Not Working with Drivers Installed

  - by Haoran

  I'm new to Linux. I installed Ubuntu 12.10 on my old Compaq/Hp Preario V3000 to replace Windows XP. Every thing works fine except I'm getting no wireless network options in the network drop down menu. I'm using a cable at the moment. Wirless chipset is: 05:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g WLAN (rev 01) 08:08.0 Ethernet controller: Intel Corporation PRO/100 VE Network Connection (rev 02) I ran rfkill: 0: hp-wifi: Wireless LAN Soft blocked: no Hard blocked: no I also ran iwconfig and got this lo no wireless extensions. eth0 no wireless extensions. In the additional drivers it says: "Using Broadcom 802.11 Linux STA wireless driver source from bcmwl-kernel-source (proprietary)" Any help to resolve the problem would be greatly appreciated.

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• Newb: First install of ubuntu, no wired or wireless

  - by Ienzo

  Ran 12.04 through a usb drive for a day or so, and had no issues outside of some latency that is more due to the lack of ram on my aspire one D255e than to OS. Had wireless running with no issue, and wired tested as working also. Ran the install and removed windows 7, wireless network is detected but ethernet is not, and neither gets connection. Disabled proprietary driver and rebooted, re-enabled driver and still neither. I know nothing of ubuntu yet! What do? _<

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• Is the Lenovo Ideapad Z570 fully compatible with 12.04?

  - by umpirsky

  I'm looking for some notebook that will run on Ubuntu perfectly. I like LENOVO IdeaPad Z570, but I'm not sure how it will perform on Ubuntu. I heard people are complaining about wireless problems. Here is full configuraion: Processor Intel Core i5 2430M 2.4GHz - 3.0GHz Chipset Intel HM65 Express Memory 4GB DDR3 1333MHz Graphics NVIDIA GeForce GT 520M 1GB HDD 750GB SATA II Wireless 802.11b/g/n, Bluetooth 2.1 Network adapter Ethernet LAN 10/100Mbps Ports VGA, HDMI, 3x USB 2.0, eSATA Does anyone have experience with this model? Any problems noted? I heard there is a test suite, how can I install it? Maybe I can boot live CD and try it myself before buying it. But, unfortunately, sometimes something works on live CD, but not when you install it. I guess critical components here are graphics and wireless. Any feedback would be appreciated.

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• How to connect to the internet via command line or graphical utility given I can't click at the top of the screen?

  - by Ben

  My Ubuntu 12.04 installation has an input problem resulting preventing me from clicking near the top of the screen. That is, there is an unclickable area, circa 60 pixels high and stretching all the way across the screen. I will ask about this in a later question. For now, I would just like to be able to connect to the internet, given this limitation. I am able to access the network connections application by hitting the super key and typing "network connections". There is a LAN and a wireless network available. The network icon in the bar at the top of the screen shows an empty wedge, which I suppose means that wireless is off. I've attached the cable for the Ethernet connection, but it does not seem to have connected automatically. How can I figure out what's going on? (I'll happily edit in the output of any relevant terminal commands.) Thank you.

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• upgrade from 11.10 to 12.04 killed my network connectivity

  - by Daniel

  I have a wired network connection that worked fine in version 11.10. I upgraded to 12.04 and immediately after the upgrade was completed, the OS reported my "cable unplugged". It is not unplugged and it is not defective. I have a D-link DFE-530TXS 10/100 ethernet NIC and I see what seems to be the generic 10050 driver loaded. Is there any way to just flush anything and everything to do with the network configuration and have Ubuntu reset/find everything again? If not...is there any way I can get it to realize that my network cable is not unplugged? (considering it worked mere minutes before). Thanks.

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• Problemas com instalação do Ubuntu 12.04 LTS e 13.04

  - by user160096

  Não consegui, apesar de diversas tentativas, instalar nenhuma das versões: 12.04 LTS e 13.04. Cheguei a trocar de mouse,uma vez que o anterior não era reconhecido pelo sistema. Configuração: Motherboard Gigabyte GA-970A-D3 8 Gb de memória DDR-3 1 Hd Sata II Samsung de 80Gb, com Windows 7 Ultimate SP-1 1 Hd Sata II de 1Tb Samsung, como dispositivo de dados 1 Monitor 23" Phiips CL 234 1 Placa de Vídeo Gigayte NVidia GeForce GT-220 1 Placa Ethernet Realtek RTL 8139/810x 1 Mouse Microsoft (com software IntelliPoint 8.2) 1 Mouse Logitech M-100 (que usei para subsitutir o da Microsoft, SEM SUCESSO!!!) Na última tentativa, o instalador do ubuntu (tanto no 12.04 quanto no 13.04, PASMEM, não reconheceu o Win7 instalado...foi aí que 'JOGUEI A TOALHA"...! Apesar de minha simpatia pela liberdade e SO's livres e bons, dificuldades como esta desencorajam a transição/migração do usuário... É de se pensar sobre isto...!

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• Help with Dial Up

  - by iSeth

  I am trying to set up a computer for my friend that has dial up. The problem is nothing I try can detect the modem. GnomePPP can't find it and I can't figure Kppp out. I've been looking all over the net on my ethernet trying to find an answer but I keep getting routed back here. I have also tried using scanModem and it finds something like Conexant Systems, Inc. HCF 56k Data/Fax/Voice Modem but the rest of it is really confusing. I've also tried this but I'm not very terminal savvy and it didn't work. It seems like I have to compile a driver but I don't know which one or how to do it. I have also tried multiple modems. Any help would be appreciated. Thanks EDIT: scanModem thinks the modem is disabled on startup. EDIT: I reinstalled Ubuntu but the problem persists.

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• No wifi using Ubuntu on laptops

  - by Pete G

  I have loaded Ubuntu onto two different laptops and both had the same result...no WiFi. I could access the internet if I plugged into Ethernet port but try as I might, I just could not access WiFi. I even tried Wine to install a Windows based external usb WiFi device but again...nothing. It functioned normally in Windows but with Ubuntu installed....nothing and this was the same whether it installed just Ubuntu or dual booted with Windows. Any suggestions? Thx!

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