Ubuntu Networking :: Wireless Network Connection Not Working After 10.04 Intalled

Apr 29, 2010

I just finished upgrading from 9.10 to 10.04 via the Update Manager. My first noticeable problem is that my wireless connection with my home network no longer functions on my IBM Thinkpad T42 laptop.The Network Manager applet shows that it detects my home network (and those of several of my neighbors), but I have not been able to get it to connect to this network. I've been using WPA & WPA2 Personal settings for security, and the Network Manager applet had correctly picked up the password that I had been using under 9.10. I've searched the Ubuntu Forums for "wireless T42" and thought I'd found a solution in a posting that recommended using the "wcid" network manager, but I've been unable to find wcid either via the Synaptic Package Manager or the Ubuntu Software Center.

1. I've noticed that in Lucid Lynx the Network Manager applet's icon in the top panel is no longer the vertical bars symbol that it displayed in
Karmic Koala; instead, the icon is a radiating fan display. In the Network Manager's edit Network Connections window, this fan icon is shown on the Wireless Connection tab, while the vertical bars icon is shown on the Mobile Broadband tab.

2. The Wireless Connection tab shows, on the line in which it shows awareness of my home wireless network (as "Auto 389690") that this connection was "Last Used" "1 month ago". It should be saying something like "today".

FWIW, the Network Manager detected my wired "eth0" connection with no difficulty.Both Jaunty and Karmic picked up my home wireless connection without any problems. Now I have no idea what to try next.

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Ubuntu Networking :: Wireless Connection Working, Network Appears In List, But Does Not Connect To It?

Mar 16, 2011

I'm having some problems with my wireless connection. I'm on Ubuntu 10.04, on a HP ProBook 4520s, with a RaLink RT3090 wireless network card. I installed the drivers (hopefully correctly), the wireless seems to work correctly, it scans and finds networks, but when I try to connect to one, it times out after some time, while still attempting to connect. I also have a wired connection that works correctly and without problems. Other computers that try to connect to said wireless network manage to do so without any problems, so this has left me a bit baffled, since, like I said, everything seems to be in order.

I'm a new Ubuntu user, so please tell me what other information I need to provide in order to easily and successfully facilitate troubleshooting this, because it is, as you can imagine, quite aggravating, having a laptop that needs to be connected to the internet through a cable.

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Jul 6, 2009

Intel Corporation PRO/Wireless 2200BG [Calexico2] Network Connection (rev 05) is not working on centos5.3

# uname -r
2.6.18-128.1.16.el5
# lspci | grep Wireless
0b:02.0 Network controller: Intel Corporation PRO/Wireless 2200BG [Calexico2] Network Connection (rev 05)
[Code]....

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Jan 24, 2010

Its a case of ".... wireless network connection active but still not internet connection .."I am using WEP - 128 key ... Works when I connect directly using ethernet cable ... but not wireless (pci and wireless router)

ubuadmin@ubucomputer:~$ ifconfig

wlan0 Link encap:Ethernet HWaddr 00:06:25:12:83:3b
inet addr:192.168.1.10 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::206:25ff:fe12:833b/64 Scope:Link[code].....

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Jan 15, 2010

I've installed opensuse 11.2 on an old IBM thinkpad. The install went without a hitch and when I got to the desktop I inserted my Dlink DWL-G132 wireless USB adapter. Opensuse immediately recognised that a wireless device was attached and I could see my wireless network listed. I entered my WPA password and was able to connect to my routers configuration page by entering 192.168.0.1 in the URL bar of firefox. For some reason I am unable to navigate to any webpage. When I enter a URL firefox acts as though there is no internet connection. The only way I can get the internet on my laptop is to connect it to my router with a cable. I used a wired connection and ran the update utility thinking that perhaps an update would fix the issue but it did not. I know the adapter works because the laptop used to have windows xp installed and I could connect fine with that.

Does anyone here have any idea why I would be able to connect wirelessly to the routers configuration page but not to the internet? I appreciate any advice anyone may have.

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Jul 18, 2011

I can connect to the internet with wired connection. The switch for the device is on but this command "sudo lshw -C network" has the following results:

#
[sudo] password for nn:
*-network
description: Network controller
product: BCM4312 802.11a/b/g

[Code]....

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Jan 29, 2011

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I uninstalled the network manager and used manual configuration, but do you think the network manager was the issue? I can't have the server disconnecting randomly every few weeks with no way to know what the real problem is. Was there an issue with the network manager with 10.04?

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Sep 11, 2010

I'm recent to Ubuntu and have just installed version 10.04 32bits desktop version along side my Windows XP.My wireless internet connection works perfectly under Windows XP as this thread can prove it, but it does not work on Ubuntu.When checking the connections on Ubuntu I see:Wireless Network - disconnected.

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Oct 25, 2010

Recently installed Ubuntu 10.04 on HP Pavillion ze5400.Wireless card is bcm94306MP. Wireless connection shows as disconnected. I am troubleshooting using the Ubuntu documentation on solving wifi problems. Ran ishw and it appears I do not have a driver properly installed. Obtained what I believe is the driver: bcmwl5.inf and bcmwl5.sys. Installed bcmwl5.inf using ndisgtk. I know its there as I can see it in System>admin>windows wireless drivers. However lshw still does not show it under configuration. I understand I must put the sys file in the same folder as where this inf file got installed. I assume all I do is copy and paste it into that folder. Is this correct? Next I need to find that folder. I tried the command find /home -name bcmwl5.inf and it did not show up. Can someone educate me just how to do this, that is find the folder and insert the sys file?

After I pass this hurdle then I will tackle trying to configure the card.

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Mar 5, 2010

Hi - I am new to Linux and Ubuntu so I have no idea how to fix or problem solve unfortunately I installed Ubuntu 9.10 from scratch recently on this laptop and all was good. I connected to my WIFI network no problem. It's WPA PSK encrypted, DHCP enabled. I just set it up in Network Manager and it was all fine. Then after a few days I installed a printer and some packages and updates via synaptics. The network connection started dropping after 20 mins or so. Only a reboot would restore it - auto connects at first, runs fine till it drops then never will reconnect. I posted on here, someone gave me some lines to put in a config file. I tried that. I didn't seem to help much, problem remained. Yesterday I checked for updates and there were a whole bunch so I just installed them all. Now I cannot connect at all. I have deleted and recreated the connection in Network Manager but it doesn't help. It tries to establish a connection but never achieves it. I am connecting to the internet now on the same laptop booted into Windows, so all the hardware is fine.

Can anyone who knows about ubuntu networking help? Do I need to do a complete reinstall? Seems a bit much, but it worked when I initially installed the OS. I want to like Ubuntu, but something as basic as connecting to the internet is pretty vital so reluctantly having to start using Windows again...

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Jul 20, 2010

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Jul 28, 2011

I installed Jolicloud OS with Windows XP before because Windows XP have too many virus to attachment to Internet so whenever I go on the internet, most of the link take us to random site so I just installed Jolicloud OS however, some reason, I don't like Jolicloud very much because it require to enter the user name and password to link Jolicloud so wasted my time to use it... Its cool but pointless.

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Jan 9, 2010

I have a cisco linksys wireless adapter (WUSB600n) which, most of the time, great when booting up. But mostly after some time (1min- 1hr.) it disconnects. When checking the status I can see some of the networks around me, including mine. But selecting it doesn't do anything. I searched the forums and tried:

sudo dhclient
and
sudo /etc/init.d/networking restart

But still no connection; the only thing that helps is rebooting.

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May 5, 2010

I am using Ubuntu 10.04 LTS - Lucid Lynx(great interface!). But I am experiencing a very weird problem. The wireless internet works just fine at my apartment. But when I am in my school, it just stops working at all. It didn't use to be like that. It used to work in school too few weeks before. But I don't know what happened all of a sudden. I have checked with my school system administrator to know if there has been any change with the network. He said the network has always been the same.

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I'm using a WUSB54GC network adapter to connect to my home wireless network. My network was not visible, so I added it and it shows connected, but when I launch the browser, I can't get a connection. I'm using Ubuntu 10.4. All other computers on the network connect fine and I disabled my firewall to see if that made a difference.

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Oct 20, 2010

About a week ago I upgraded to Maverick from Lucid.

All networking worked fine on Lucid.

I am using an Acer Laptop with the Atheros AR928X Wireless Network Adapter.

I can connect to my home network (visible, with WPA2-Personal) fine. However, I cannot connect to my university's wireless network. The only difference I noticed is that its network is using WPA2 Entreprise with Tunneled TLS Authentication and MSCHAPv2.

I tried dmesg and I got:

wlan0: authenticate with 00:1a:1e:ef:f4:e1 (try 1)
wlan0: authenticated
wlan0: associate with 00:1a:1e:ef:f4:e1 (try 1)
wlan0: RX AssocResp frin 00:1a:1e:ef:f4:e1 (capab=0x431 status=0 aid=2)

[Code].....

Unless the driver has changed, I suspect this is not a driver issue, since it worked fine on Lucid. Is this a NetworkManager issue?

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Jan 4, 2011

Ubuntu 10.04: no problems to connect to secured wifi networks. However, when trying to establish a connection to an insecure wifi after some time I get the message "disconnected, you are now offline" without ever having been connected. Once out of about 30 times I get a normal connection. My eeePC 1005HA is double boot and I can connect from WinXP without problems. There seems to be a DHCP timeout (see attached output of syslog). I have seen some posts about the same problem but none of them had a solution. I hate it to use WinXP just for the sake of connecting to the spot.

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Jul 9, 2011

Just installed ubuntu 11.04 on an old pc. At first, I was unable use my wireless usb adapter (netgear wpn111), but was successful after installing ndiswrapper-common and ndiswrapper-utils-1.9 manually. cool! then I updated all packages successfully via synaptic package manager and rebooted.now I have lost network connectivity. the os still sees the wireless usb adapter, but I have no connectivity. the indicator applet shows an exclamation point.

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Jan 14, 2010

I have a laptop Acer aspire 5100. I installed Ubuntu a while ago and it was working well. Last week I updated it using Update manager and ever since I haven't been able to connect either wireless or wired connection.

I get this:

Code:

The wireless card seems to have disappeared.

I reinstalled Ubuntu and the problem persists.

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Jan 22, 2011

I have just installed Maverick meekat on my new laptop with Wubi, and I have been trying to setup my wireless connection, but i couldnt. The first thing I tried was going to System>Prefrences>network connections, and clicking on the wireless tab. I tried to add a network think manyally, and I miserably failed.

here is the information I have of my laptop as of now after doing the lspci command in the terminal:

Network controller: Brodcom Corporation Device 4727
USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller Ethernet controller: Realtek Semiconductor Co., Ltd.

Also I have read somethings about ndis or using the windows driver and things of that sort. Whenever I am using windows, my wireless connection is working perfectly. So I dont know if there is a specific way to activate my drivers, or if my computer is just not capable of having wireless connection on Ubuntu.

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Apr 8, 2011

I have a new installation of Ubuntu 10.10 on my Aspire 1640Z, and since I have it, it's impossible to connect it to the web. I have a wireless connection on a SFR Neufbox (I'm french and it's a french box I guess). I've tried to be connected with a Sagem key. I have another computer with Windows XP, which is connected wireless with the same kind of key. When I use Network Manager, there isn't any automatic connection : "no network connection" and when I click on the logo of Network Manager, I can't click neither on "<<filaire>> network" nor "wireless network".

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[Code]....

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Sep 1, 2011

I have a problem with my wireless connection in ubuntu (natty with amd64bit) There seems to be intermittent disruption in my connection. Havent seen a pattern as yet, though it happens once a day. After that I cant get it to work at all and only restarting + reconnecting the USB device helps. Dont know what is going on.I have already read these pages : Commands and Wireless Troubleshooting.Here is my line of though1) Given that I am able to connect other devices to it while I am not able to connect through this desktop, I think the router is OK.2) I am able to work with it after restart + re-connection . And so the driver is OK and is loaded. The driver seems to be oK and loaded even while I am not able to connect.So why is this happening and how can I get this under control without having to reboot and re-connect the device everytime.Here are the output for the commands which will give you a more detailed idea of the process. Before reboot while I was not able to connect:

Code:
Script started on Tue 23 Aug 2011 01:40:08 PM CDT
raja@UshRaj: ~raja@UshRaj:~$ sudo nm-tool

[code]....

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Jun 12, 2011

If I click the network indicator and select Connection Information, I get a dialog that says "Error displaying connection information: No valid active connections found." If I click Edit Connections, it shows Auto eth0 as "Never used". Yet I am using my network connection right now. If I download something, I am getting full performance. I am surfing the net and posting this, now.What has happened to my connection info and how can I fix it?

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Jul 31, 2010

I recently installed Ubuntu 10.04 on my Acer TravelMate 3270 notebook (with Windows 7 dual boot) for everyday use. All is great except i started to notice my Wireless Network get disconnected and then reconnects every 5 minutes or so. Also the NetworkManager Applet 0.8 keep annoying me with the notifications that its disconnected and then reconnected.

I do not have this issue while using Windows 7 (in the same area). Can this be fixed. As i really want to move my day to day computing need to Ubuntu.

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Jan 27, 2011

I'm trying to connect to a hidden wireless network in ubuntu through the terminal but i am unable to do so.

I first tried using ifconfig,iwconfig and dhclient initially but i am only able to get an ip address without the default gateway and dns server addresses which i normally get through the network manager applet.

Then i tried using cnetworkmanager but failed miserably again i keep getting this error

Code:

Another applet is running: Bus name already exists: org.freedesktop.NetworkManagerUserSettings (pid 1851)

Then i used nmcli available with the network manager package. i was able to establish a connection only with the connections showed in the list. i use a hidden wireless network. i am unable to connect to the hidden wireless network using nmcli without actually creating a connection from the network manager applet.

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Dec 27, 2009

I have a very strange problem with Fedora 12 and my wireless Broadcom 4311 card.After the installation of Fedora 12 the wireless card was visible but not activated. I did an extensive search in Internet and finally I got everything done. The card was visible and activated. I found my home network; the strength of the signal was nearly 100%.The problem is that although the card is visible and activated my browser is not working well. I can say that it is not working at all. Even now I am using other computer to write this message because Firefox cannot load any web page at all.

The strange part of the problem comes with the fact that when I open terminal window and when I am using yum everything looks OK. The speed is very low though.Does anybody have some ideas about the problem and its solution?When I use Windows on the very same computer everything is fine, the Internet speed is close to the maximum limits of my provider's speed which is 10 mbps.

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Jan 27, 2011

I have a dual boot (XP Pro and F13) laptop. This laptop has a Ralink RT2501USB Wireless Adapter which works perfectly fine on XP. But when it comes to F13, adapter only works properly when I am physically next to my router. When I move few feet away the strength of the connection drops from 100% to around 40%. But even though 40% should be okay for slow connection to internet, I can't get any internet access at all. I have tried three different routers with same results on each.

When I boot same machine with windows XP, all works fine. I can move to any part of my house and I will still have the connection without any issues.I can see that RT73 driver is installed if I check in add remove program under system.I am not an expert but to me its seems that the drivers on F13 for RT2501USB are not as good as on windows?

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Nov 9, 2010

I'm using Archlinux with NetworkManager to connect to the internet. When I'm in my room, I've an ethernet cable and still receive the wireless signal.Sometimes (like when we have a power cut, somebody is rebooting the router or simply something wrong with the provider), I'm disconnected during a few seconds, NetworkManager ask me again the password of the wireless (even if it remembers it), and then I'm ok.But when I'm not in front of my computer, while I haven't push the button "ok", it doesn't connect, even with the wired connection.That's not very normal in my opinion as there is supposed to have two different and independent connection. No ?

I intent to install an ssh server on my computer but if I cannot access it every time there is a problem that won't be very useful.

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Nov 24, 2009

I have Debian installed a year ago, working perfectly until last week when network card connected to internet stopped to communicate. I did no change in configuration. It just stopped to work while I was reading an online web page. Network card connected to local network still works fine.

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I verified/changed cable between NIC and the router, no luck. If I connect the same cable from router to a Windows PC, everything is OK. If I connect back to Debian machine, it does not work.

I tried connect this NIC with a different router with DHCP enabled, nothing, NIC will not communicate with DHCP server.

I tried to set static IP, no change.

Today I booted a Knoppix 6.2 and this NIC worked perfetly! It set up using DHCP, I could access the internet.

I booted machine as usual and the problem still persists of course.

This is information captured immediately after boot. The trouble NIC is eth0 after boot finishes.

All this was captured with eth0 connect to a router with DHCP enabled. There is no DHCP entry in syslog related to eth0. Reinstall is the very last option.

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Jul 29, 2011

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