Ubuntu Networking :: Wifi Connects But No Internet / Why Is So?
Nov 23, 2010
Let me start by saying that I am new to ubuntu, and that I always use forums as a last resort.
I installed ubuntu 10, and immediately after the Wifi card deected my network name, and actually connected to it, but then I opened up firefox and....no internet.
Since then I have been trying to fix this problem, and after some research I found out that my card (PCI Cwp-905) is RT2760 based, and I downloaded the linux RT2760 drivers for it.
The driver folder contained a readme file with commands you should enter to install it, and other setup files.
The problem: every command I typed in didn't work. I tried "make", and then "sudo make", but just got permission denied each time. I am now at a dead end. (Please note that I changed my directory to the folder location before doing this)
Does anyone know what I am doing wrong? If you want I can attach the driver files.
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Nov 11, 2010
trying to run 10.04 netbook live from a memory stick with a view to installing it on my laptop. However although I can see my wireless router and connect to it I cannot access the internet. I have tried this on my laptop and desktop with the same result. I was however able to download Seamonkey browser using the software manager....this also cannot access the internet. Both of my PC's have no problem when using XP or Linux Mint.
I have also discovered that if I piggyback, using Ubuntu 10.04, on a neighbours open wifi link I can gain access to the internet. My wifi is using WEP protection but as I said I can set the link up to the router, entering the appropriate key code, and have a good signal strength, I just cannot access a google search page.
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Aug 6, 2010
I know Windows forward and backward but I am so new to linux it's just wrong. I just installed fedora (like 1hr ago) on and old toshiba laptop with a WiFi PC card. Everything seems to work fine except. My Networks connects to my home Wifi network but it will not connect to internet. When it connects the IP address isn't even close to being in the same range as my other laptops and PCs. Like I said I'm new to linux but I'm wanting to learn. Any fixes for this issue? Which linus book is the best one to read for a beginner? Other then not connecting to internet I have no complaints.
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Aug 27, 2015
I've been using Debian for about 6-7 months now. I've had a bit of a major networking problem for the past 4 months or so that I've been trying to fix - specifically, it started when I upgraded to Jessie. I can connect to wifi just fine, and sometimes I can even use the internet for brief periods of time (exceedingly rarely). Then... nothing. No network access, period. I can't ping any outside servers, I can't ping other computers on my network, and I can't even ping my router. Pages I try to load just stay "connecting" for all eternity, network printing fails, and so on.
So after four months of searching online (I've read through way more wireless documentation than I care to say), I finally gave up and admitted that maybe I screwed something up during upgrade to Jessie (as a matter of fact, I did, I had to do the upgrade in two increments [somehow] because my root partition was too tiny by mistake) and I did a clean install. Since I had /home on a separate partition, I was able to keep all my user files, but all settings regarding networking were wiped. So after installing firmware-iwlwifi so I can use my wireless card, I tried connecting to wireless! Success! Then I tried connecting to the internet... success! Briefly. The next morning I tried using the internet again, and it failed in exactly the same pattern as before.
I don't know much about what's going on here, but here's what I do have available:
I do have to use firmware-iwlwifi, which I installed by doing apt-get install firmware-iwlwifi. I don't think it's an issue with the wireless card itself (hardware-wise), the laptop dual-boots Windows 7 (that I never use anymore), and Windows 7 is able to connect to the internet just fine. Connecting directly to my router by ethernet cable works fine, I have perfect internet/network access then.
I can confirm that my laptop is receiving an IP address and that it is using ARP correctly to get the MAC address of my router (I confirmed this by doing the arp command, it has the MAC address correct, I checked from another computer with my router's config page) All other computers on my network work perfectly with my router. To confirm the router/its configuration isn't at fault, I did a full factory reset of the router, but to no avail.
Out of curiosity I tried installing Wireshark (using an ethernet cable to download it) to monitor what happens when I try to access a webpage. I'm no expert on networking, but I noticed something out place when I compare a capture from the affected computer to a capture from one operating normally - there are a lot of STP packets showing up. I did some checking around, it looks like STP is involved in bridging and more complex networking setups (involving switches, for example)... but it shouldn't be found on a home network, especially where there's no bridging whatsoever. These STP packets don't show up on packet captures done from any other computer. I've attached a packet capture from the affected computer here, since the forums won't let me attach a .pcapng file.
Here's the output from a few commands I ran during past troubleshooting sessions:
Code: Select allsudo ifconfig
eth0 Link encap:Ethernet HWaddr e0:db:55:b5:fe:06
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:12455 errors:0 dropped:0 overruns:0 frame:0
TX packets:7781 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
[Code] ....
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May 7, 2010
I can normally connect to most wifi connections, but for some reason I can't connect to my broth's-gf-parent's network. Windows 7 can connect to it just fine, but not Ubuntu. Once in a while I'll go to a cafe, and this will happen there too.hough, like I said I can normally connect to all other wifi networks with no hassle
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Mar 4, 2011
i noticed today that the last three places ive tried to use wifi at (a friends house, my cousins house, and my moms office wifi) refuse to connect, even after triple checking all the passwords and trying various security protocols (WEP 40, WEP 128, etc.). strangely, last weekend i was able to connect to a hotel wifi signal with no trouble. even stranger, my ipod touch is able to connect to all these places. at my friends house, we even tried an ethernet cable but ubuntu didnt even know it was there. im a little concerned about this, as i might need to connect to wifi for something really important and ubuntu wont cooperate.
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Feb 28, 2011
Another issue I'm having, considerably more serious, is my ability to connect to wifi access points with proxies. The story goes, my school has free wifi, but you have to go through their proxies to access the internet (like at McDonald's or Starbucks, where you must 'log in' and accept their usage terms). I can connect, including DHCP, and when I type in any URI I get the redirect posted to Chromium's address bar, but I simply cannot connect to it. This has happened in Ubuntu and Arch, using at least a couple different network management methods (I usually use WICD but I think I started off with networkd). The strange thing (to me) is that my Android phone works just fine, so although I'm not completely familiar with Android on this level, I don't imagine it's the fault of Linux itself. but I'll only be able to experiment with this once a week, on Saturdays (when I have class --gotta do something entertaining).
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May 2, 2010
Installed Lucid yesterday. Rebooted and lucid seen my wifi connection but after a few mins drops the connection and will not re-connect. Now, I cannot get it to connect at al even though the WPA password is correct, and rebooting to Win7 shows no problems there.Looks like it's back to go old wicd,
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Jul 4, 2011
I've got an Asus EEE 1000HE, and it's worked fine for a long time with the EEEBUNTU distro (a distro based on Jaunty (i think) with a custom kernel). Unfortunately, Eeebuntu is no longer maintained, so I recently did a clean install of Ubuntu 10.04.2. I am now unable to get my wifi to work reliably.
The wifi tries to connect for a while, then pops up the "Wireless Network Authentication Required" window. If I hit "connect" it will try again for a while, then pop up the window. Etc. Note I know that my connection information is OK. I haven't mistyped the password (see below). Also note that the wifi antenna is turned on. For example, iwlist scan is able to find my network.
There is a weird twist though: The netbook is always able to connect through an ethernet cable on eth0 just fine. If I boot the netbook with the ethernet cable plugged in, the wifi instantly connects as well! I can then unplug the ethernet cable (eth0 goes away), but I am still able to use the wifi connection for about 5 minutes before it disconnects, and goes back to trying and failing to connect.
This behavior is 100% replicable--the wifi always works fine (for about 5 minutes) if it boots with the ethernet cable plugged in. Very rarely, the wifi will also connect on boot without the ethernet cable, but that is not replicable.
Other EEE netbooks seem to have issues with multiple wireless drivers, like in this thread. Perhaps something similar is happening here? My card seems to be using rt2860sta as a driver. I tried blacklisting it, to see if another driver was trying to load instead, but that just negated my wifi altogether. (It's unblacklisted again)
My router is a very reliable Linksys WRT54GL with factory firmware which has never been flaky.
I'm at my wit's end. This netbook will be useless without wifi.
Below is the suggested information for a first post:
Here's lspci (note there is nothing listed as "Wireless Brand" to grep out):
Code:
lspci
00:00.0 Host bridge: Intel Corporation Mobile 945GME Express Memory Controller Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GME Express Integrated Graphics Controller (rev 03)
[Code]....
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Feb 6, 2011
I have an old dell desktop with a belkin wifi dongle that connects to the internet right away when i boot in live cd mode but when i try while its installed/installing i get the connecting animation on the wifi, thing, on the top bar.it connects then loses connection and cannot reconnect 5-10 minutes later. this is driving me crazy, i have homework and i just need this thing on the internet already so i dont have to stress my macbook with a minecraft server
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Jun 20, 2010
I recently installed Xubuntu 10.04 on my desktop computer that had a USB wireless adapter DLink DWA-140. I didn't have to install any additional drivers to get it to work. I put in the network SSID and the password and was connected immediately. However, when I try starting firefox it doesn't load any sites. Can anyone help me in approaching this problem. I have a DLink DIR-655 router. If I should gather more information to get this problem solved then please let me know and I will do so.
Edit: Now I am unable to connect to the network. When I click the network icon in the taskbar, my home network is not visible while it is visible under another ubuntu computer I'm running.
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Jul 17, 2010
I bought a laptop today (Compaq Presario cq62) and loaded Ubuntu 10.04 on it. Everything has been running great, but the Wifi has been acting up. It connects to my router for a few seconds to a minute, and then stops all data transfer (although it still shows that I am connected to the internet). My other computers running Mac work fine. I took my laptop to another place with wifi, and it did the same thing.
The data transfer seems to stop when there is a lot going on. Whenever I try downloading new software, it gets to exactly 5% then stops. If I disconnect the wifi, and reconnect it works again for another minute. I may need to be walked through any terminal codes.
On that note, where would be a great place to read up on using Ubuntu (online book?)
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Aug 25, 2010
I installed Ubuntu 10.04 32-bit on an old desktop (1.5ghz Pentium 4, 20GB hard drive, 768MB RAM) a week or two ago, at the same time that I installed Xubuntu 10.04 on an even lower performance IBM tower server. The server functions perfectly and my other (Windows XP) desktop recognized it from the start, as did the Ubuntu desktop. However, I rearranged a few ethernet cables the other day without turning off the desktops and ever since my Ubuntu machine does not recognize my server, even though all of the devices are connected via ethernet cable to a linksys router and it connects to the internet without a problem. I'm a linux newbie - this is my first move away from Windows - and I don't know where to turn. Far more confusing is the fact that, when I boot from a LiveCD, the network is recognized and I can read/manipulate files on my server without a problem. Oh, and I briefly flirted with OpenSUSE KDE (not as noob-friendly as Ubuntu, so I'm back) and encountered the same problem.
Needless to say, booting from the hard drive is preferable to booting from CD every time
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Apr 23, 2010
The computer connects wirelessly to a router. The router is connected to the internet and that is working well. (If i use a cable connection to the router, I can reach the internet).
Why wont the wireless connection reach the Internet? It is a strong connection. It worked before wirelessly. I am on 10.04 beta, with the recent updates installed.
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Jan 20, 2011
i have a leased line ( speed 2 MB ) which we use to connect to our mail server , oracle ERP etc.. we have a dhcp scope defined as 192.168.100.1-192.168.101.254. with a default gateway as 192.168.100.90 ( which is a cisco router ) we have a pix firewall ( 192.168.100.10 ).. now the gateway passed all the request to firewall..
we have an ADSL of 4 MB speed.. ip is 83.*.*.230 from ISP. i have a proxy server ( squid ) eth0 is connected to ISP (83.*.*.230).. eth1 to LAN ( 192.168.100.79 ) now the problem is when i put default gateway to eth1 ie 192.168.100.90 the squid connects to internet via leased line.. if i leave the default gateway field empty on eth1 , the squid connects to internet via ADSL ( which i want ) but the problem is no one on the lan cant ping the squid server ( no connectivity to internet for the whole LAN ) how can i solve this problem? i want squid to connect to internet with ADSL, but if i put gateway on eth1 ie LAN squid goes through leased line which i dont want to happen.
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Oct 15, 2010
Since I have 3 Network cards in my Desktop PC I've configured it to act as a Router using GNU/Linux Ubuntu Lucid in combination with Samba so I could share my internet connection. It works on any laptop a connect to it using any of the network cards ports [regardless of the operating system installed on the Laptops], but when I plug that same network cable to any Desktop PC [regardless of the operating System installed] it doesn't even light the LED in the netcards. From the Client PC seems like nothing is plugged in the the netcards.
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Aug 9, 2010
I have one pc on which I have installed slackware and samba (fixed IP, mask 255.255.255.0) I have another PC (also XP) which also has fixed IP running XP, and I can connect that to the slackware server easily My third PC connects to the internet and gets its IP address from the Cisco router(?) that provides the IP and mask on boot up.
I tried changing the IP and Mask on the slackware server to match the internet PC (which uses a mask 255.255.254.0) but the PC mask and IP changed on the internet PC I want the PC that connects to the internet to also be able to connect to the slackware server, but I see no need for the slackware server to also connect to the internet - I will mainly use it as a file server When I worked for another company I think the IT department talked about having 2 network cards in the PC that connects to the internet
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Jun 8, 2010
When my router switches off... the wifi signals go off... then why the hell ubuntu keeps on connecting to that very wifi like hell and when doesnt connect shows the prompt to manually connect... with the wifi key already filled in... whats the use of saving the key when it has to ask the question from me either to connect or not?? and if its isnt available... just wait when its available.. and for the prompt,i have only option to cancel(because wifi isnt available at that moment if i select connect it again tries to connect like hell..which it cant) and if i cancel it wont auto-connect when wifi does get available! what the heck?
Windows has this done the right way... when the wifi isnt available.. it dissconnects silently.. and when it becomes available connects silently.. why isnt this been done this way in ubuntu??
Ive attached an image..one can see in the image that it says "authentication required by wireless network" when there isnt any.. as router has gone down!
And the second thing i want to report is that there is no way to report this bug from ubuntu... the launchpad.net talks of going through bug reporting process which is done against a definite package... now how does a user know which package would be causing this error?? there should be a more clear process of reporting such bugs to ubuntu team... which a common man using ubuntu( ubuntu says its most user friendly of all distros right?) can report..
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Mar 4, 2010
I'm sorry if i'm posting this on the wrong place and if this problem is solved in another post but I couldn't find anything to solve my problem. I'm kind of noob when it comes to these kinds of problems.
I have an Acer Aspire One 110L. I had Ubuntu 9.04 on it working fine but one day something happened. I connected to my wireless network and I got no Internet. I couldn't even ping to my router. I thought it was some kind of bad update I've installed that made it to my computer, so today I've installed Ubuntu 8.10, following this tutorial: [URL].. While following it, I used a wireless usb card to connect to my wireless network and download the packages needed. I've installed WLan via ath5k Method at the beginning, but right after unpluging the USB wireless card, the other wireless card from my Aspire One had the same problem as before. It can connect to the network but I can't even ping my router. No signal. I've tried the madwifi method too but the problem is still here, because it must be something else. The drivers must be fine.
Can anyone please tell me what to do here? I'm pissed off already with this problem. I don't really know what is the problem. I have another 2 computers at home and they work fine via Wireless.
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Jan 5, 2011
I use vpntunnel.se and followed their tutorial for OpenVPN and it connects and assigns an IP. However, once the sequence is initiated and I open my browser I cannot connect to a webpage and get a "cannot resolve" error. I e-mailed their support and they suggested I change the DNS of my network settings. I did that but the same problem. Once I close OpenVPN my internet works again. It works in windows, so I know it is not my router...I use a wireless connection with my router. I don't know if this has something to do with anything...
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Feb 17, 2010
I am new to Ubuntu, but because of my familiarity with Vista's Command Prompt, I was able to adapt easily.But there was a problem. My WiFi card didn't work. As it turned out, I was missing drivers.So I plugged into my dad's Gigabit Ethernet port and got ndiswrapper.That worked well, and my wireless card is working. The problem is that I can access the network in my house, but not the Internet. Everybody else (running Windows) can access the Internet wirelessly. But I have to steal my dad's wired work line. Is there any way to solve this? info about my computer, here it is:
OS: Ubuntu 9.10 Karmic Koala
Computer: (Laptop) Dell Vostro 1000
Wireless card: Dell 1390 wireless
Router: Netgear... some model or another
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Jan 20, 2010
just wanted to ask what is the name of the process that connects to the internet in fedora 12, i tried networkManager and /sbin/dhclient but when i tried to stop them, the my connection didn't disconnected.
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Jul 27, 2010
i am tryin to connect to internet through wifi. for this i have to connect to router first and then open the web browser to put UN and PW. I am using ubuntu. i know UN and PW. I can connect to router but my(any) web browser cannot open the authentication page.
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Aug 12, 2010
I have a 2wire card and gateway how do I install it and connect to the internet?
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Nov 10, 2010
I just installed Ubuntu 10.10 tonight on my Acer Aspire One D250 and have no internet at all. I know both the wireless and wired internet work, as I am dual booting WinXP as well.
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Dec 12, 2010
The place I will be staying at (Japanese Guesthouse) only offers internet through cable. What I'd like to do is be able to connect my other devices through wifi (Cellphone for example) to the Ubuntu machine connected through this ethernet cable in order to access the internet.I've searched for a good hour but I'm getting extremely confused about the gateways, bridges or whatever else people suggest. Most of what I've been able to find actually only covers getting internet through wifi and then sharing it through lan (I'm trying to achieve the opposite).
So if anyone could point me in the right direction, or at least tell me what terms I should be using for my searches, it would greatly help.Some computer info might be useful. I'm using a Dell XPS M1210, the network adapter is an Intel Pro Wireless 3945ABG and I'm running Ubuntu Desktop Edition 10.10.
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Dec 17, 2010
I installed Debian Squeeze on my system two days ago, using a wired connection to internet (which worked fine). After that, I had to install the non-free wireless package in order to scan wireless networks. It now works fine, and I can connect and get to internet. But with wired connection, i connect via eth0 and none of my applications work. And they're not in offline mode.Also, i already went here: URL,,, and I checked if that was my case. I tryed what they say several times in some different ways, but I still can't connect. Even more, if I change something like they say, I get "unmanaged device" and I can't even connect to the internet. And the wired connection works, I'm using it right now on my ubuntu 10.10.
If you want more information, I just tried to ping sites like google.com or ......com using network preferences and it does work, it gets 100% of the packages back around 50ms later, so the internet appears to work. Also, when I connect via wireless, everything works perfectly.
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Jan 14, 2011
I have an acer aspire one running Linpus Lite (i think) - worked fine for a year on wireless and LAN but yesterday I started it up, it connected fine and clicked up the wireless icon but when clicking the "Browser" icon it won't open the browser screen - repeated clicking brings up a screen that says Firefox was stopped and is still open - please shut it down- How do I do this when there are no screen commands ? I have tried switching off and re-starting the unit but no effect. What can I do to fix it ?
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Jan 16, 2011
My wireless adapter connects to my WPA2 network perfectly, but when I run firefox it says it can't load the webpage, no matter what page I go to. Also, downloading new software doesn't work either. Any ideas please?
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Mar 20, 2010
I've been running ubuntu for about 6 months, so i'm still abit of a newbie at linux but heres what im having issues with:I'm having troubles connecting to the internet on ubuntu, i have no problems connecting on xubuntu on the same machine. I can connect to my network but i cant access the internet on firefox or snaptic or any of that, but the weird thing is i can successfully ping address' in the terminal. I can also connect to my router config page in firefox using 192.168.0.1.
My internet worked perfectly about a month ago on this ubuntu install, so i cant figure out what i did to make it stop working. I think it may have something to do with the/etc/resolv.conf file because it only exists as /etc/resolv.conf.tmp and when i run "sudo dhclient wlan0" (or eth0) it says:
ubuntu@ubuntu:~$ sudo dhclient wlan0
Internet Systems Consortium DHCP Client V3.1.2
Copyright 2004-2008 Internet Systems Consortium.
[code]....
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