Networking :: Network Cable Just Stopped Working
Dec 14, 2008
I have a laptop, and the wireless and cable worked fine for a while, but one day, for some odd reason, the wireless and network cable just stopped working. I'd connect to the web, and I would get output using "ifconfig" and the GUI wireless signal. When I hook up the wire, it detects it. However, no matter what I can't load any web pages. The wire does work in another house, and my windows partition utilizes these devices well. Any ideas?Additionally, I am able to log into my wireless router and change configurations, but that's about it :/.
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Apr 2, 2010
I have been using my laptop as a development machine for a few months now, developing php/mysql applications, and testing them offline via the same laptop by pointing the browser to url.
But a few days ago, my url stopped working and I discovered that it will now only work if I have an active internet connection plugged in. Why has this happened and how to I fix my test server so localhost works with or without an internet connection via an ethernet cable.
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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.
I thought it might be a NIC failure so I installed a new PCI NIC but no change, still no communication throught this NIC.
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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Sep 1, 2011
I have not used wired network on my desktop for some time, and now it appears to be not functional. Wifi works fine.
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Apr 8, 2011
Network stopped working about a month ago. I installed ubuntu again, and network worked fine, and I turned off updates to keep things stable. Now network stopped working again. No changes had been made to it.I put in the ubuntu install cd, and network works fine off of it. I did not reinstall again. ifconfig shows eth0 with correct ip address, but 0 RX/TX packets.
Cant ping anything from it, and cant ping to it from other computers.I'd really rather not reinstall yet again, any ideas on how I should go about diagnosing this problem?Ubuntu 2.6.35-28-generic-pae #49-Ubuntu SMP Tue Mar 1 14:58:06 UTC 2011 i686 GNU/Linux
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May 7, 2010
i have lucid installed on my toshiba laptop after after an update my wireless stopped working keep asking for password and my wireless card is not detecting no wifi :
*-network UNCLAIMED
description: Ethernet controller
product: AR5001 Wireless Network Adapter
vendor: Atheros Communications Inc.
[Code].....
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Sep 21, 2010
I'm not a total newbie, but run into some strange problems with my installation of Lucid.Everything was working fine yesterday. I shut down the laptop and powered it up this morning and had problems with network. I have two NICs (wired and wireless). Both are set to pick up IP settings from DHCP and both do, however when using wired network I can't communicate with outside world - can't even ping the default gateway (but pinging 127.0.0.1 or IP address of the NIC no problem, so stack should be OK).When on the wireless network everything works fine (otherwise I would struggle to write this post ).What is very weird though is that I have a VMWare Player installed and using Windows VM on wired network works just great!
I noticed that when you're persistent it happens that you can ping but huge chunks of traffic are lost (e.g. packet 1-10 would pass, 11-40 would be lost, 41-59 would pass and so on).I restarted Ubuntu, tried shutting down interfaces, disabling networking and nothing helped. I don't recall performing any changes (at least that I would be aware of).Can anyone suggest something?BTW. This is not DNS issue as both IP addresses and FQDNs do not work. When I refer to using a given network (wired or wireless) the other one is down with ifconfig command...
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Oct 22, 2010
It has been a while and many ubuntu updates since i connected the windows laptop, it used to work fine but this ubuntu machine keeps telling me the cable is unplugged. When i boot into windows XP the network works fine and the laptop can connect through the network to use the internet. I have a very simple home network ... 3 pc into one switch. I am by no stretch of the imagination good with networking
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Jan 15, 2011
My desktop computer has another Linux distro on it. Wired networking was working fine. I wanted to try Ubuntu 10.10 so I installed it on a spare USB HDD. After install, networking still worked on both distros.
I moved the USB HDD to my win7 laptop and Ubuntu 10.10 booted fine. Once booted, Ubuntu asked to configure wireless on the laptop. I tried to do this but it did not work.
Therefore, I moved the USB HHD back to the desktop and booted. Now the wired network does not work from either Ubuntu or other distro (fedora 14). And to top it all off, the wired network will not work even from the Ubuntu live CD.
I have checked all connections, switches & cat5 cables to my desktop computer. I can still access the network and internet from my laptop (in win7) so I do not believe it is an infrastructure issue. I can confirm that everything works from the cable out of the back of the desktop through to the internet.
Here is the output from the usual troubleshooting commands in Ubuntu 10.10 code...
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Jul 26, 2011
My network manager application went missing a few days ago. I enabled it by right clicking on the taskbar above and opting for "show". It reappeared and worked fine. After I rebooted, however, it was there ok, but it doesn't respond to clicking at all. It has stopped working.
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Nov 25, 2010
Right so yesterday my internet worked fine. Today - no connection at all. The light for my cable on the router doesn't even show up. I originally had indicator-network installed, so when the internet first stopped working, I tried a few other options such as tethering to my phone via usb and bluetooth (which I have successfully used in the past). However, these didn't work, and I figured that as connman is still in beta, maybe that was why. So I reinstalled network-manager and network-manager-gnome via a usb stick, uninstalled indicator-network, and rebooted the computer. Still no internet.
When I click on the applet, it says "No network devices are available". This is odd, as I definitely have a network device... it is part of the motherboard. So I thought I'd do the SMARTlan test or whatever it's called. It's part of my BIOS, so I ran that and it returned results that I (kinda) expected: when the cable wasn't plugged in, it returned one set of results. When it was only plugged into my computer (and not the router), it returned another set of results. And when it was plugged into both my computer and the router, it returned a third set of results. So that leads me to believe the cable itself is fine.
And when I move the cable to a different port on the router, nothing changes. The corresponding light still doesn't come on. Network-manager, telling there are no network devices. The BIOS can see the ethernet port and the cable. And the router is functioning perfectly for my parents' computer and my ps3. And I have checked the cable to my computer for physical damage - it follows the same path as the one to my ps3, and on top of that, nothing physical can possibly have happened to it in the last day. This happened once before, except I don't think the network devices were lost.
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Feb 19, 2011
I have somehow messed up my network (onboard) card in the process of configuring network settings. how I managed to do so is that I did not use ifdown before making changes to my "/etc/network/interfaces" file. Also I think it might be relevant to mention that the sshd was running -although with no active connections at that time- since I have the service installed on my 10.04 Ubuntu Server (x64). So step by step what I did to end up with no network connection:
1) sudo cp /etc/network/interfaces ~/myfiles/interfaces.original
2) chmod 444 interfaces.original
3) sudo nano /etc/network/interfaces and then applied my network settings (IP, netmask, etc.). The syntax and configuration of my "interfaces" file is without flaw since it was simple, typical and was assigning my up to then DHCP assigned IP of 192.168.2.3 to static.
At about that point and although "ifconfig" showed the changes had been applied as planned the network card stopped working. I could no longer ping anyone but myself and the leds both on my network adapter and on my switch were turned off. Since my configuration also has a Windows 7 installation I rebooted to Windows in hope of troubleshooting through device manager but I got an error code 10 which means that the adapter could not start. Did I fry my network adapter for good and for all or I still have a chance of repairing it?
PS: After a closer look I saw that the NIC's LEDs indicate that the device cannot start. I am considering to reboot my MB as a last resort since the NIC is an onboard device and changing BIOS settings has done nothing to restore it.
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Mar 16, 2010
We were moving our cluter and during this process eth1 cable(external internet cable) was pluged-out. After pulg-in that wire again cluster is not working nicely and some process including mysql is not working.
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Feb 14, 2010
I just got connected to Charter Cable Internet service a few days ago and I'm having a weird problem with my home network. Prior to this my network worked fine. On my network I have a desktop running Ubuntu 9.10/64 and Virtualbox with WinXP installed, an HTPC with Ubuntu 9.10/32 installed and a laptop dual booted with Ubuntu 9.10/32 and WinXP. The desktop and HTPC are hard wired to a wireless router and the laptop is wireless. The cable modem is hard wired to the router. I have samba installed and UFW is disabled. The problem is: with the cable modem turned off or on standby, all machines connect to each other and can transfer files, etc just fine but when I activate the cable modem all of the machines can connect to the Internet but the machines running Ubuntu can't connect to each other on the home network. If I boot the laptop into Windows, it can connect to the Linux machines just fine but if I boot it into Linux, it won't connect to the Linux machines but it can connect to the Internet and as far as the desktop, Ubuntu won't connect to the network but Windows running in the Virtualbox with bridged networking can connect to all of the machines.
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Apr 22, 2011
I thought id give 11.04 a bash and i cant connect to internet via wifi i have a broadcom network adapter built into my hp530 laptop , and my network port is broken so cant use cable connection , so i thought id go back to 10.04 , guess wat i need to d/l the drivers again ... and again i have the same problem ? i have another laptop running win 7 , anyone know how i can get the drivers or what i can do ... ? its a broadcom BCM4311 802.11b/g
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Dec 16, 2010
I have a Verizon wireless/wired router that I access the internet through. I have a desktop computer running Slackware 13.1 i386, but it is in a place where it would be impossible to run a network cable to. Would you buy a USB wireless card? Would it work with Linux? Is there another way I can get my computer networked that I am not thinking of?
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Feb 14, 2011
At the outset I would like to tell everyone that I am still relatively a newbie in linux. I use a usb mobile broadband data card to connect to the internet, and I recently purchased another desktop for my wife. Both of us do not share any files, but I do not have a router and was wondering if I could share my connection with her using a crossover cable.I did a lot of Googling around and tried various different things, I even followed another thread in the same forum but the most that I have got is my network manager saying that connection has been established. I am however not able to see her computer under my windows network and don't know how to proceed.I don't know where I am going wrong, and considering that my knowledge of networking is at below basement level, I would really appreciate any help in this regard.
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Sep 9, 2009
I'm using Debian Lenny and installed wicd package.It does not ask me for the credentials and i can't find where to define them?!
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Apr 13, 2011
After 2 years of good service and after I've changed IP addresses in the router from 192.168.1.2 to 192.168.1.102 my autofs stopped mounting my NAS with NFS. That was the only change.
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Aug 2, 2010
I have posted this in networking, but perhaps it should have been here. Can anyone give me a clue on how to get my networking to work again? I don't care about sound.Last night I was trying to get my printer working, and when I rebooted, I lost networking and sound.I am currently booting on a live CD, and sound and networking are fine-- so it can't be a hardware issue (obviously). I must have inadvertently broken something, but I can't figure it out.
I have tried restarting networking, but it doesn't respond-- it says stop/waiting or something like that.I can't access the sound preferences-- it says waiting for sound to respond (or something like that).When I reboot, sometimes I see a terminal window with the same line scrolling very, very quickly-- something about waiting for USB.Additionally, the system is very slow to respond-- clicking a menu item can take a long time for it to appear, etc.
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Mar 25, 2010
I have 2 network adapter, 1 wireless and 1 wired. Both are connected to different network. Whenever I plugin the cable, wireless stop working. I need to get both working simultaneously. Do I need to do any settings to make both work?
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Jul 13, 2011
When originally installing 11.04 I had problems getting my Ralink 5390 wireless card to work.
Today my computer froze completely and I had to turn it off via the power switch. When I turned it back on, wireless was no longer recognized! My iPod can connect to the network just fine, so it must be an Ubuntu problem. There are no problems with my ethernet connection either.
I researched this and found several threads about blocking and unblocking wireless devices using the rfkill command. Well, unfortunately for me the rfkill command doesn't work. When I type sudo rfkill list or sudo rfkill unblock all, nothing happens; it just returns me to my bash prompt. I even tried uninstalling and reinstalling rfkill...nothing.
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Mar 6, 2011
Im a long time Ubuntu user (since 5.04), but networks were never my speciality, I have a desktop running 10.10, connected to the internet trough a US robotics modem (connection eth1), and i want to share its network with my laptop running win7, over a cat5 cable (connection eth0), but the problem is I dont seem to understand what i am doing wrong, what the missing steps required, or in which end is the problem (either ubuntu or windows side).
From what I could grasp was needed googling about the subject, i already set the eth0 connection to share with other computers (in network manager edit connections auto eth0 ipv4 configuration set to share with other computers). Also using the cli set eth0 for static ip using :
Code:
sudo ifconfig eth0 192.168.0.1 Now the question is what i am missing? or is everything needed already done and i just have to properly configure the win7 side (which i already checked several times)?
Here is my ifconfig output:
Code:
eth0 Link encap:Ethernet Endereo de HW 00:01:29:a6:55:fe
inet end.: 10.42.43.1 Bcast:10.42.43.255 Masc:255.255.255.0
endereo inet6: fe80::201:29ff:fea6:55fe/64 Escopo:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Mtrica:1
[Code]...
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Aug 5, 2010
I've run into a situation where knetworkmanager tells me networking is disabled. If I switch to the ifup method in Yast then I can get online but when I switch back to user controlled knetworkmanager tells me that networking is disabled.I've actually had this happen twice.The first time I somehow managed to get it working again (I thought it was by right clicking on the icon in the system tray). This time I don't see the same option.Has anybody got any suggestions on how to get knetworkmanager working again.
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Sep 18, 2010
over the last couple of weeks, firefox has asked to be upgraded a few times. shockwave flash has also asked to be upgraded. sometime last week after upgrading shockwave flash all video stopped. so i have no videos, video in webpages just shows a grey box, with a light grey arrow.i have been very busy so i have taken time here and there to check the internet for solutions. there appear to have been problems with macs' and a lot of the problems appear to be from august 2009 onwards,am not sure it is the same problem.i am running opensuse 11.1mozilla firefox 3.6.10shockwave flash 10.1 r82 is enabled
code:
uname -a
gives me:
[code]...
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Sep 1, 2011
After a recent flash update it has stopped working in firefox 6 and konqueror. I am using 11.4 kde 4.6.5. Never had a problem with flash till now.
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Jan 24, 2011
I am a Windows refugee who discovered Ubuntu as a way to save my files from my virus-ravaged computer. Had no installation discs for Windows, so when I had to wipe my hard drive and start over, I decided to give Ubuntu a try. I've had mixed success, but that's another post...
Right now, the problem is that I installed 10.10 two weeks ago and was able to connect to the Internet with no problems - until yesterday. Suddenly, our wireless network (the only one in the vicinity) does not come up as available in Network Manager. In fact, the entire wireless option disappeared. I know there are many posts and threads on here about this, but weeding through them trying to find an answer is more frustrating than actually dealing with the problem. I know the router works because I can post on this forum from the Macbook. I really like Ubuntu and would like to keep using it, but not being able to connect to the Internet now on top of the other issues I've had is making me doubt I want to continue down this Linux road.
P.S. When I attempted an analysis through System Testing, it said something about there being no proprietary drivers?
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Feb 20, 2010
I'm a new user of Ubuntu, so i'm not that familiar with this OS. My wireless network is detected but when I'm entering my 128 bits WEP key, it doesn't connect at all. I have no clue where to start troubleshooting.
Here's some of my specs if that's of any help:
Computer is a Sony Vaio laptop model VGN-SZ370P
My wireless card is from Intel Corporation 82801G (ICH7 Family) USB UHCI Controller
The ethernet cable connection used to work before, but I fooled around with some commands and now seems to be disabled...
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Jan 22, 2011
I have a strange problem that I cannot diagnose -- slow wifi. About two or three weeks ago, I noticed that my wifi began to slow down dramatically. The problem is the same on my ubuntu laptop and my ipad. But when I connect directly to the router with a network cable, my connection is fine. So it is definitely a problem with the wifi signal itself.
What I have done so far:
(1) I checked all of the MAC addresses connected to my wifi. I identified my tivo box, laptop, and ipad. Nothing else.
(2) I used [I]wifi analyzer[I] on my android phone and selected an unused wifi channel (channel 8).
(3) I changed the username/password on my wifi signal. I also changed the password for my router's admin privileges.
(4) I restarted my router and computer.
None of this helped.
I am using a Netgear WGR614 wireless router.
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May 2, 2011
Since I upgraded to Ubuntu 11.04 my system freezes when I plugging-in an ethernet cable.My network devices:
Code:
#sudo lshw -C network
*-network
[code]....
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