11.04 X64 Ubuntu Box Keeps Dropping Wired Network Connection
Jul 10, 2011
I have an Ubuntu box, 11.04 x64, running on a Dual Opteron SFF box (iWill ZMaxDP... pretty old machine). Up until a few weeks ago, it was acting as a Windows 2008 Server, but i moved it to Ubuntu.
Anyway, the machine will not stay on the network for any amount of time, without falling off... I have changed network cards, cables, ports on the switch, etc, and nothing seems to work. I have a Windows 2003 box giving out DHCP addresses, and for a while, i actually tured that off and setup a second Ubuntu box to give IPs... it made no difference. The box gets an IP, and can ping outside for a bit (2 min or so) and then just looses connectivity... ifconfig shows it with an IP (i have tried both Static and DHCP config) and nothing seems to work.Restarting the network stack (/etc/init.d/networking restart) some times gets a connection working for a few min, but then it falls over again..
Just to note, the main onboard network card is not showing up for some reason. I have an Intel Dual GigE PCI card installed. Eth2 is the "Working" interface, an ETH3 is not connected to anything.... Also, this is probably the first time since i installed the machine that the connection is staying up.
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Mar 18, 2012
I am running Ubuntu 10.04 on my Acer Aspire One netbook.The wireless connection works great, but the wired is totally dead.
When I plug the Ethernet wire, the little led next to the port doesn't blink.
If I do ifconfig, this is the output:
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:1659 errors:0 dropped:0 overruns:0 frame:0
TX packets:1659 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
[code]....
There is no eth0. Is that normal?
In the "Network Connections" GUI there is an entry "Wired connection 1", its "MAC address" field is blank.
How can I make the wired connection work?
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Aug 23, 2011
I have 4 PC's connected to a router, only one of the PC's connections keep dropping every few minutes for 20 seconds or so then reconnects, I can't figure out why it is doing it,
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Jul 12, 2011
Basically for no apparent reason one day when I came home several weeks ago my wired internet connection has become almost unusable. The connection to the internet severs every couple of minutes, sometimes every few seconds. The only way to get my connection back is to either wait around half an hour and it fixes itself, or to use the ''diagnose connection problems'' in the INternet Explorer tools menu. For some reason this tool fixes the problem nearly everytime, how often I have to use this tool and wait for the internet. I cannot download many important things I need as the connection keeps severing and the download is 'interrupted' (within Google Chrome).I first tried reformatting my whole system, but to no avail. I am running a fresh installation of Windows XP service Pack 3.
I have a cable running from my wall (ADSL conection I believe) that connects into a router. This router is then connected to ANOTHER router via a blue network cable (Im not quite sure the reason for this my step-dad had it set up like this when I moved here. I think it is because the 2nd router does not have a jack that fits the ADSL line coming from the wall). I am wired directly from my computer into the first router. I have tried connecting to the other router to no avail. Chrome generally tells me that there is a DNS error when I try to load a page and the connection drops out. [code] Could it be a faulty router, faulty cables, or a software issue? I have the latest network adapter installed and power save mode is switched OFF. I would like to know if replacing the cables/router would fix things.
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Dec 28, 2011
I have a Belkin 8236-4 v2 I got from Belkin because they RMA'd a 6 yearold Pre-N that kicked the bucket. I've been having a hassle trying to get my connection stable.At first I thought it was because the DHCP was causing anything connected to the router to conflict, so I set one of the PCs on the network outside the DHCP range with a static IP and gave it the Google DNS, while this worked for my PS3(connected wirelessly) it did not solve the problem with this PC. I've looked around on the internet for the past few days trying to fix it, and tried several things, but no avail. I'm beginning to think I may need to just buy a whole new router from another company, because after reading reviews on this router I got, it seems to be a big problem for a lot of people, while it seems to happen on a number of other brand routers as well, so I don't want to give up on this thing just yet.
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Sep 14, 2011
I have a Dell Inspiron 1525. At home wired/wireless internet works perfectly. At school I have to keep the laptop, wired because the wireless signal isn't strong enough. I have a brand new ethernet cable and have tried others and for some reason my internet always loses connection after a few minutes. It works as soon as I unplug the ethernet cable from my laptop and plug it back in, but then fails again shortly after.When I try diagnose and repair, it says I need to reset the network adapter, and when I click on that option it starts working again for a few minutes but loses connection shortly after.
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Feb 13, 2013
I have a strong internet signal with good SNR coming out of my cable modem, then a nice short 3ft cable going to my linksys VOIP router (I think it's a SPA 2102). Whether I have anything downstream plugged in or not, the "phone" light on the VOIP router goes off every once in a while and when I check I find that I've lost both dial tone and Internet - basically everything downstream of the VOIP router. Have tried every variation on configuration you can imagine (feeding just one phone, feeding the entire phone wiring to the house, nothing at all plugged into the phone jack, no computers downstream plugged in, replaced all the cables, ...). I've replaced BOTH the cable modem and the linksys VOIP router and the problem continues. My cable company says my signal is fine. They suggested a signal amplifier but the coax comes straight to the modem, no splitter, and I'm always seeing 6-7dBmV. My phone company says their router must be losing signal upstream and refusing to reconnect, especially now that we've tried replacing their VOIP router with no change. Any chance I got two 'bad' routers in a row? Not sure what they did for setup parameters. I'm not particularly tech-savvy but have read a lot since seeing these issues, have run my own ping and tracert checks and everything seems to be wonderful... but then most of the time everything IS fine. When I have phone it's crystal clear and when I have internet it's nice and fast. I sometimes go 24hrs or so without a drop, but other times I'm resetting 2-3x in a couple of hours. All I do is power off the VOIP router and back on and everything is fine, for a while. After first getting VOIP things were fine for 4-6 weeks.
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Feb 4, 2013
For a number of months now, our Internet connection in an office of 5 computers, 2 Macs, 3 windows boxes (1 as dell laptop) has experienced the connection of the Internet dropping off.The timing of the 'drops' is usually in the morning, when the Dell Inspiron M510 either boots up or wakes from sleep. Typically the solution is to turn off the modem, the router and switch, wait a few minutes, then turn the switch, the router, then the modem back on. Our connection via the modem is through AT&T, via a non-static IP addy.Our router is a BEFSR41, v4, with firmware up to date (circa 2006) It's becoming a daily chore now, just about, and is getting to be a bit of a headache on some days.
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Dec 16, 2012
I got an EDIMAX Nano BRN-6258n Router to replace my glitchy Belkin Wireless-G router about a month ago. My typical network setup involves a desktop computer wired to a router and a laptop connected wirelessly.
Anywhere from once a week to twice a day, the internet connection starts (selectively) dropping off. While I cannot browse the web, some of my browser add-ons and Skype/Dropbox are working fine, and Windows almost always indicates a perfectly working connection.
If I am streaming through YouTube or other sites, the stream continues to play after the connection loss.
For AV, I use a combo of Malwarebytes and AVG Internet Security.
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Feb 16, 2011
I setup a D-Link DIR-825, VB1, Firmware V2.00NA about a month ago. We have 3 Macs here at home - 1 brand new iMac, a G4 Powerbook, and an old G4 / 933 Tower. The G4 tower is connected via ethernet. The other two through Wi-Fi. My problem is that I can barely use the internet for even a few minutes on the G4 tower, connected via Ethernet, without losing my connection. I can be in the middle of loading a page or an image, and suddenly it will say "Waiting for xxx.com". Then if I try to go to Google.com or something I will invariably get "Looking up xxx.com". The connection usually returns on it's own, but it can take up to 3 or 5 minutes. When I get this message on the ethernet G4 tower, I will also have lost connection on the wireless Macs. For the first couple of weeks the tower was not connected and we were just using the two wireless Macs, and they were working well. It seems that as soon as I hooked up the G4 tower via ethernet, connections became very flaky and intermittent all of a sudden.All the Macs are configured for DHCP. We have a Time Warner cable modem. The G4 tower had previously been used at my office with it's own dedicated DSL modem / router, and it worked flawlessly for months at a time without dropping a connection. I've tried rebooting the modem, then the router, then turning all the Macs back on, several times. Same result. I just tried loading the new firmware but it didn't work. Said the Gateway was too crowded or something.
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Jan 2, 2012
I lost all Internet connnecitivity on my Linksys e3000. After determining that my cable modem was connected and working correctly, I pulled the e3000 and put my old wrv54g router in place. Wireless worked, but all wired connections showed link but no other apparent connectivity. Neither of my desktops could get a DHCP lease.
At that point, I purchased and manually installed a new e4200 router. All worked fine. Both laptops connected via wireless and both desktops via my house LAN. Until this morning (Monday). Wireless is working just fine, but both wired computers show 100 Mbs connections on an unknown network with no DHCP. Checking status shows packets going out, but nothing coming in. Checking LAN status on the router shows that both ports are connected, but it does not appear to receive anything from either desktop. All was fine last night. Oh, the router is on 1.0.03 firmware.
I have tried about everything I can think of. Configurations both on the router and the desktops (one Windows XP, 64 bit and one Windows 7) and all seems fine. I have disabled and reenabled the network connectors, rebooted both the router and the computers, etc. Nothing seems to work.
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Mar 30, 2013
I just had Comcast setup my internet and it is really fast. 30 down, 10 up, 40 ping, my connection to my computer (wireless) is very fast and my online gaming (wired) is not laggy at all.The problem lies with the connection dropping when I am online gaming. I connected directly to the modem and there's no problem at all. I connect to my Linksys EA3500 and once I start playing in an online game, I disconnect from Xbox Live and am dropped from the game... anywhere from right away until about 10-15 minutes into the game. This is the only time where my connection falters at all, otherwise it is great. But I play online a lot, and competitively, so I obviously need a stable connection.I have not had this issue with my previous ISP in New York, Time Warner and that connection was much worse. I'm thinking it must be a setting on the router that is causing this, but I can't pinpoint what. I tried automatic AND static connections from my xbox to the router. On the static connection, I even put a DMZ on it, but to no avail.
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Aug 1, 2012
I have noticed a few times over the last month that my PC would not load pages due to connection problems. If I hover over the Network icon, it say that I am not joined to a network but within minutes, it reconnects itself. I use http://www.scan.co.uk/products/zyxel-pla-4201-500mbps-mini-powerline-adaptor-twin-pack power adapters and they "appear" to work well with good speeds as I download and game online alot. I have noticed that today the problem is really bad. It loses its connection every 5 or 10 minutes and then reconnects itself as if nothing has happened. I tried using my iphone on the wireless and it also seemed to have dropped out on connection. I have tried resetting my router too but with no joy
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Mar 17, 2012
I'm looking to improve my connectivity,as the internet drops out a few times a day.Let me explain - I hope I'm correct in my assumptions.Every few hours, my PS3 will have a DNS error, and upon checking my iPhone, I notice that it's switched from wifi over to 3G and there seems to be a loss of connection. I cannot reconnect to the internet until I've restarted my router, or 'forgotten' and rejoined the network.
Additionally, we have an Apple TV, and connection drops out about 3 or 4 times every hour, which is very frustrating when trying to watch a movie.
[code]...
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Jan 15, 2011
I have two different friends that are having problems with their printers which are connected to their home network. One has an Lexmark printer wired to their router and running Windows Vista on a laptop. The other has an HP printer connected to the network wirelessly and the laptop is running Windows 7.
In both cases, they are setup to use DHCP. When first setup and the printer software was installed, everything worked fine. Now they each get a message showing 'offline' when they try to print. I went to each of their houses, downloaded and installed the latest printer software and they were printing again. After a short time, the same problem surfaces.
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Jun 28, 2011
I have a desktop computer and a laptop computer both running Windows 7 Home Premium. The desktop is connected to the router directly and the laptop is connected to the wireless network. When I restart both computers, I can see and access the other computer through the home network without problems. But after a while, sometimes just a few minutes, I can only see the other computer but cannot access it. Sometimes, I cannot even see the other computer. If I do a "ipconfig /release" and a "ipconfig /renew", it may sometimes correct the problem for a while.
I have looked at many related discussions on the web and none of the suggestions work for me.I have the firewalls disabled on both computers, as well as the ipv6 and IP service. I have also disabled the Bonjour service.I have turned a number of services, such as computer browser, server, workstation and many others to automatic as people suggested.
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Oct 17, 2011
I have two wifi routers which I have connected together with an ethernet cable to extend coverage across my house. The ethernet cable is connected to a LAN port on the first router and the internet port of the second router. This works fine and creates a second network that I can connect to the net on. The problem iseemingly randomly, about every 15 minutes, the second router will lose internet connection. My laptops and phone still stay connected to it, but windows lists it as having no internet connection. If I then wait a couple of minutes and reconnect, internet will be working again.
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Oct 6, 2011
About 4 months ago or so I had what I though was a firewall problem, tuned out to be two bad switches or so I thought. I replaced the switches with 3 com switches and everything seemed fine. Until Monday, my network was down again I though because I had a patch cable plugged into the same switch because when I took that patch cable out of the picture and reboot the switches everything seemed good. Then Tuesday I installed a new Cisco 2960 to relieve some of the stress on a switch. Then I plugged in another 2960 and started checking out the network assistant and monitoring tools but every time I clicked refresh or just clicked on the newer of the two 2960s the network connection would bounce? Now today the switch that had been in production the 3com just started to bounce its connection on and off ? I had to plug everything into the new 2960 and unplug the 2nd 2960 to keep the network stable, well its only been about a half an hour.
Are the switch trying to sync speeds with each other?
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Jan 31, 2013
Periodically I will loose internet connection even though when I click on the wireless applet in the tray it says connected. If I disconnect and re-connect it will work fine for a few hours. Takes all of 20 seconds to do. Any problems with 1703 wireless card? Have installed the latest drivers.
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Sep 16, 2011
I have a work computer...Dell Latitude 6400, AT&T Global Network Client (Company VPN service), using Novatel USB551L from Verizon, with their new 4G LTE. First connect to Verizon, then it automatically launchs ATT Global Network Client, once connected, the system automatically maps drives. I stay on for about 15 minutes average to 40 minutes that's when the Verizon drops/disconnects. This consistantly happens throughout the day!
1. If I connect to a "local" wireless signal NO dropping.
2. If I tether my Sprint Android, NO dropping.
Only dropping with the Verizon. I MUST have the Verizon dedicated to this work computer to run the VPN and hopefully (very soon) a mandated VOIP with Avaya!Called Verizon- they sent me a new USB thinking that might fix it. But same thing. They are showing signal strength 4G. Nothing on their side.
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Jul 13, 2012
I have been having a problem with my 4400n dropping connection when streaming video / audio.It is connected half duplex to a cat2950 and the media server is mediatomb on a linux box the client is a ps3 presently.
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May 12, 2011
I have a laptop1 which has its two interfaces ( wired and wireless ) working. And have another laptop (laptop2) for which only wired interface works.
I am planning to connect the two wired interfaces such that laptop2 can connect to internet through the wireless interface of laptop1. How to achieve this? Both systems use Ubuntu 10.04 Desktop edition
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Apr 2, 2012
I have a home network with a Linksys E4200 connected to the ISP's fiber box. The problem is that when I'm connected to the Linksys, either wired or wireless, the connection to the internet will drop after what seems to be a random amount of time (normally anywhere from 2-10 minutes). I can restore the connection by doing any of these things:-reboot Linksys-disconnect and reconnect cable from router to fiber box-if on wireless connection, make changes to the router wifi settings, like change the wifi channel.The internal network stays up, and I can ping both the internal and external ip of the router, but not the fiber box. I have also had the same behavior with an Edimax Wifi AP and less frequently with a Edimax router (once every 1-2 days). I have done everything I can think of:-changed the wifi channels-changed the ip ranges, subnets, turned router DHCP off and back on-booted the fiber box-changed cables-updated all routers to the latest firmware, the network cards with latest drivers...and loads other things that I don't remember right now. For the wifi side of things, there are no other networks in range that could interfere. The same problem occurs on both my and wife's Win 7 laptops and on the iMac (latest OSX). Here's a fun detail: while the Linksys has lost its connection to the internet, I can still access the internet through the old Edimax router connected to the same fiber box, either wired or wireless.
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Jan 26, 2013
I am running ubuntu 12.04, with apache2.My router configuration is set to forward port 80 to my local IP.The problem is I can only access the server as local host. Else it times out (from devices using the same network). I do not have sfw firewall enabled, neither shore firewall.
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Nov 6, 2012
To start off with, I own the network, and every system connected to it. I run and admin it, so the chances that anyone else has changed anything is essentially zero.This computer has a wired network connection (The issue) and a wireless one. They are connected to two separate networks. A few days ago the wired card stopped getting an IP address from my router, always ended up with a 169 address. Eventually I just disabled it, and installed a PCI network card.
Now what happens is that all works fine for a while, then stops. Suddenly I am "Not connected to network" despite the fact my ip address hasn't changed. I run the network troubleshooter, it tells me the "Gateway is unreachable" Resets the network card, and all is good. Then after a while the network fails again. I did already scan with malwarebytes, and everything is fine as fat as its concerned.
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Nov 30, 2011
I am getting ready to move into new digs and wanting to set up my network. Main house cable internet will come in with modum to a dlink router for both wired and wireless. desktop and a magic jack wired into router wireless for ipad and laptop. then run wire to workshop about 100' from house where a second magic jack and desktop will be set up (small biz out of workshop). I am pretty sure that the range of the router for wireless will reach to workshop fine for ipad but if not I will need to put a wireless up there tooext kids have a laptop running windows 7 but kids being kids and having had problems with self control on net in past I want to be able to make sure that I can turn them off from net when needed because
1. I do not want them running me past the data limits imposed by cable company and
2. keep them from sites such as those which got them in trouble in the past (kids are older and bought laptop for selves and pop will not go along with me confiscating it if they abuse internet privileges
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May 11, 2011
I have a laptop running win xp. It was running fine this morning. I then brought it to a Honda dealer. The problem started there ...At first, I got a strong wi-fi signal but not network connection. I tried to repair (by right clicking on wireless network icon on the lower-right corner). The first time it seemed trying to do something but nothing worked. The 2nd time when I tried to run repair, the process hang and the machine could not be rebooted or shut off. I have to hold the power key for a few seconds to turn it off.Now, I am at home using another computer to post this message, which indicates my home lan and my router are working fine. But my laptop still has no connections - neither wired or wireless
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Jul 24, 2012
I'm currently staying at a marriott in NYC and at night after work the wireless access becomes awful. As a work around I've plugged the ethernet into my apple airport express and launched my wireless network as usual.Things are all fine and dandy for the first hour or so of browsing or watching netflix. But then it seems to lock up and I lose connection. I haven't seen any caps on data transfer that would explain it but is there something else I should be looking at? The fact that it works (albeit for a limited time), is a good sign I think. I'm mostly using it for my ipad to watch netflix etc.
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Nov 16, 2011
I have a Linksys WRT54G2 router upstairs in my house that wirelessly reaches the entire house. I also just bought a Linksys Valet Plus M20 that will be my router once I get it in the mail. The problem is I want to hook up my downstairs Satellite receiver to the internet but it only has a LAN port. I cannot run a LAN cable downstairs. Is there any way to link these routers up wirelessly and then run a LAN cable to my SAT receiver? Or do I need to buy a different product?
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Mar 23, 2011
I have a laptop connected to internet via a router using WiFi.My desktop computer doesn't have a WiFi connection. I want to connect my laptop and my desktop computer using an ethernet cable in order to access the internet on my desktop computer. I've been fiddling around for over two hours with no luck so far. Both computers are on Windows 7.
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Feb 17, 2011
When I click on Network under Places I can see Windows Network folder. When I click on the Windows Network folder it displays an error message of Unable to mount location...Failed to recieve share list from server.
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Jan 18, 2013
this is my first usage of ubuntu and installing my wireless driver.
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Jan 22, 2013
how to install network drivers on ubuntu 9.4?
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