Ubuntu Networking :: Wired Connection Not Working, Tried Everything?
Sep 1, 2011
I recently installed 11.04 on my PC (was running 9.04), and beforehand "tried it out" and networking was fine. I could access the internet no problem.I then ran the install, and fully formatted my HDD (i have 1 HDD for the OS and another for storage)It crashed halfway thorough, so no problem, i just re-formatted the hardrive and installed.However, It didnt connect to the internet, I literally tried every single forum looking for the solution, including editing the Network interface file.After a bit of diggingfound my user privileges did not allow me to connect to ethernet, and randomly use audio devices.SO, no problem I checked the boxes, but it still wont connect to the ethernet now, and it was fine before, tried re-installing twice with full format, but still doesnt work.
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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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Nov 1, 2010
I have a wired problem in Ubuntu 10.10, My Ubuntu can connect with Wireless network, however it cannot connect to Wired Connection. I installed dual System, one is Ubuntu 10.10, the other one is Win7. Under Win7, I can both connect to the Internet in Wired or Wireless mode.
The more wired phenomenon is: When I plug in the cable, I can see the icon connected in my network manager. But I cannot visit any URLs. By checking the "ifconfig -a", I can see the IP addr was assigned to my eth0.
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Dec 4, 2010
installed Ubuntu 10.04 on my Dell 1564. My cabled netwo connection is not working.buntu has been dual booted with Windows 7. Internet connection on Windows is working. I have an ADSL modem connected to my laptop via the cable.I have given the details of commands asked to be execute(viewed various posts).
isr@ISR:~$ lspci
00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 12)
00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16 Root Port (rev 12)
[code]...
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Jan 7, 2011
Running a wired connection through a Linksys router that suddenly stopped working today.I thought this was a ipv6 issue sinced I enabled some of those settings to share a connection with my PS3.I have since disabled IPv6 in Firefox and through the grub. The RealTek adapter will not even show a connection through the network manager when connected.The onboard adapter will show a connection, give me a ip address and MAC but still will not load the internet. I've tried uninstalling and reinstalling both adapters through the network connections, as well as reinstalling Firefox to no avail.I've also tried using Open DNS servers.I cannot ping through the network tools either. Hard for me to paste a ifconfig since I'm on my laptop.I'm running Ubuntu 10.10 (not dual booting).I did some updates this morning but it worked fine for a little while after that, until I tried to connect to my PS3.
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Jan 31, 2010
After installing UNR onto my dell mini 9 and downloading the correct drivers to enable wireless internet (using this site: [URL]), I decided to load ubuntu onto my brothers netbook. After the installation completed, I went to do complete the steps listed in the above article, however I was unable to connect to the internet using an ethernet wire.
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Oct 25, 2010
Ubuntu 9.10. Everything works fine until yesterday when I cannot connect to network. My lan card is Realtek PCI and is present on system (i can read mac address and all settings). In connection manager I was try to set everything manually (IP, netmask, gateway and DNS) or leave automatic - without success. I am connected to router. I don't want to feed "log-hungry" people because how to resolve ubuntu lan problem can help me (not someone who will want to try). I cannot connect manually because there is no option when I click on network icon (I can just uncheck connection, but that's all). I can't even access to my router (from computer with Ubuntu, because I can access from another computer). All logs shows lan card proper. Windows XP on the same computer booted from another HDD works fine.
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Mar 20, 2011
I'm running 10.10 on a brand new computer, and up until this afternoon the wired connection was working fine. All of a sudden it stopped working (and doesn't work in Windows either).I ran sudo dhclient and it gave me:
DHCPDISCOVER on eht- to 255.255.255.255 port 67 interval 3 (7, 9, 10, 18, 13)
No DHCPOFFERS RECEIVED
No working leases in persistent database sleeping
[code]...
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May 23, 2011
I am using a livebox with two wired PCs. One windows and one Ubuntu. The Ubuntu machine used to work fine on the internet. I have not used it for some time,t having got it running again there is no wired connection - Ubuntu searches but comes upd connection disconnected. I have checked the cable and that is fine I swapped the two cables over and it works fine on the Windows machine.The cable in the livebox shows two constant lights. The green light does not flash though - it is constantly on - I beleive this means the connection is good but there is no data flow
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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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Feb 6, 2010
My ubuntu karma desktop is plugged into a wired connection that goes through a router and into my cable modem.Everything was working fine like it had been foseveral months yesterday morningSomething happened by the end of the day that has screwed up my wired networking. I plugged my laptop into the same cable thats plugged into my ubuntu, and the cat5 cable is live. Also when I plug said cable into the ubuntu box, the ethernet lights come on, or atleast a solid green one. Meanwhile the network connections Icon continues to have a red X and a tooltip saying "No network connection".
Under network settings, there is only one wired network "Auto eth0", but it says "last used: never" which is strange since I've been using this for months. When I click edit the main settings are MTU automatic, ipv4 automatic DHCP, and ipv6 ignore.hat could the problem be? By chance did a karma update get released that broke the networking
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May 7, 2011
Ever since my BT Hub 2 has updated a few weeks ago I'm unable to connect to the internet either wireless or wired. I duel boot on my netbook with xp and duel boot my desktop PC with windows 7. None of the Ubuntu�s are able to connect, I have no problems with the windows side of things.
Has anyone any ideas on how to fix this until BT decide to fix the problem. Preferably a step to step guide as I have limited experience with Ubuntu. I�m using Ubuntu 11.04.
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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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Jan 17, 2010
My brother installed Ubuntu 9.10 on a Packard Bell Easynote NJ65. He has a wired home connection, which seems not to be working now. It was working with the same machine under Vista. What are the first places I should look? Any hints or clues or people with similar issues would be most welcome.
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Dec 2, 2010
my wireless network connection is not working but wired connection is working .at networkmanager wireless connections are not showing .
[walkingtree@localhost ~]$ iwconfig lo no wireless extensions.
eth0 no wireless extensions.
wmaster0 no wireless extensions.
wlan0 IEEE 802.11bg ESSID:""
Mode:Managed Frequency:2.422 GHz Access Point: Not-Associated
Tx-Power=20 dBm
Retry min limit:7 RTS thrff Fragment thr=2352 B
[Code]....
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May 31, 2011
i m connected it with wired bb airtel connection but its not working i have one more operating system windows 7 thats working nicely with that connection.
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May 14, 2010
My wireless connection has been giving me some problems, so I decided to try a wired connection directly to the router. However, when I try to do that, it doesn't work. When I click the network manager icon, it says that the wired device is not managed.
ifconfig gives this:
Link encap:Ethernet HWaddr 00:13:d3:dd:12:79
inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::213:d3ff:fedd:1279/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[Code]...
I ran sudo dhclient to try release and renew my IP, in case that was the problem. It released and renewed successfully, but still didn't connect to the Internet.
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Feb 7, 2011
I tried to install Ubuntu 10.10 with the live CD and it kept freezing at creating ext4 file system for /. I finally got it installed using the alternate cd method. Now, my internet connection is not working. I am connected to a router with DHCP. When I boot up with windows, everything works fine. Ubuntu says that I'm connected with a wired connection but I can't access anything on the internet.
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Jun 21, 2010
I have been looking around the forums searching for similar problems, it seems not only me had this problem. About a month ago I did a regular update via Upd Manager. The next day - no wired connection.Still managable, since the local library has wireless. Now that won't work either.Just after I upgraded from Jaunty, I accidentally removed NetwMngr from the top right corner of the screen, but that should not have anything to do with how the program works, right? I now cannot reach NM, if I run it from the terminal, nothing happens visibly.
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Jun 1, 2011
I just installed Ubuntu 11.04 desktop on my desktop in dual boot with Windows 7.
Heres my problem, I am unable to connect to the Internet even though my wired Ethernet connection says it is connected normally. The wierd thing about this is that I also have a wireless card in my desktop and when I connect through that I am able to connect to the Internet. I am connecting to a router that is functioning as a repeater to my main router/cable modem. I have tried to solve this myself but am having no luck. Ironically, earlier today suddenly my ethernet connection worked for a few minutes without me modifying anything.
The output of some terminal commands are below.
Quote:
Quote:
Quote:
However a pint to that ip address (my router) is successful.
Quote:
Hosts.allow and hosts.deny are both fine (not blank but no entries)
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Jan 22, 2010
I have two PCs one has Windows XP the other has Ubuntu 9.10 on it, the Windows PC has no problems getting on the Internet (I'm posting this with it) and getting an IP address from the wired router. The wired router I have is ONLY wired it does not have wireless at all, it is currently setup to hand out IP addresses between 192.168.1.2 and 192.168.1.254.
The Ubunutu 9.10 PC worked great last night surfed all over the place for hours, then finally shut it down last night when I went to bed, shut down appeared to be normal like it always does when it shuts down, then this morning when I booted it up it gave error: "WIRED NETWORK - disconnected you are now offline".
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Mar 15, 2010
I am using ubuntu in my new office, and I can't get the network working. The "official" OS installed was a Windows, and it has a special "dial-up" app for the LAN connection (not wireless). My network admin is apparently not helpful, since he actually knows nothing about the internals for the "dial-up" app (he did not even ever heard of TTLS, PEAP, MD5, etc), and claimed that no OS except for Windows can work...
Well, I have tested various configurations with my Mac laptop, and apparently the LAN connection requires 802.1X authentication, and it's using a very weird combination "TTLS+PEAP+MD5" (if I check these options in Mac OS X, the connection works). However, in NetworkManager, I can't select both TTLS and PEAP, and moreover, TTLS does not work with MD5. So, is there anything I could try?
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May 17, 2010
Fresh install of UbuntuStudio 10.04. This is really bizarre.
I can't seem to connect to the wired connection mainly because there is no connections tab (pic attached).
Here's some printouts:
dmesg:
Code:
lshw -C network:
Code:
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Jun 1, 2010
When I unplug the ethernet cable from this laptop and plug into my Ubuntu 9.10 Desktop I get a wired connection automatically but I have no internet connection in Mozilla
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Aug 17, 2010
I've had a computer running Ubuntu connected to my TV for a few weeks now, but as of yesterday, I can't get it to keep a connection to the Internet. Everything works well for an hour or so after a reboot, but then no WAN connections work. When this happens, no sites load in Firefox or Chrome, I can't ping Google, I can't SSH to the box from work, and none of the pages I have running on apache load from remote computers. However, all local area connections seem to work fine. SSH from within my LAN takes much longer than usual, but it does still connect.
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Sep 1, 2010
The situation is I have one machine just installed 10.04yesterday, and I plan to take it as FTP server sharing filesvia LAN and WAN as wellBut after setting up all network withNetwork-Manager found that my dsl connection willdisconnect while my wired connection was connected.
my network-manager setting process is:
1.wired tab:
IPv4:192.168.1.x
[code]....
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Nov 19, 2010
connect to wired LAN in ubuntu 10.04? I think I have specified the IP address and everything correctly. But it says no connectivity. In windows it says connected but I am unable to open any webpage.
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Dec 16, 2010
I recently did a whole system wipe and got rid of windows all together!! Unfortunately, that means I have to start over with the whole networking thing. I know I have a bcm4311, but I have no idea what I have for a wired adapter. I know that I could search through everything to find what I need, but there is so much info for all the different versions. I have ubuntu studio. Can someone tell me the commands to type into the terminal to find out what I have for the wired network card and recommend a place to get the proper "drivers" to get my computer working again?
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Apr 19, 2011
i got wired connection using Ubuntu 10.10 and im new using ubuntu pls tell me where i must write the words not to write codes and i don't where i must do it.what is the best version of Ubuntu didn't had that problems?as i saw that Ubuntu 10.10 had same problem for all people.
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Apr 20, 2011
i can't connect to the wired connection, but i can connect to the wireless... i'm using Ubuntus 10.04. when i run this codes into the terminal it shows:
root@valdivia-laptop:/home/valdivia# sudo lshw -C network
*-network
description: Wireless interface
product: AR9285 Wireless Network Adapter (PCI-Express)
vendor: Atheros Communications Inc.
physical id: 0
bus info: pci@0000:04:00.0
logical name: wlan0
[Code].....
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