Networking :: Automatic Internet Configuration Lost After Update?
Sep 10, 2010
After running a large update and rebooting a few weeks ago, I found that my internet connection had stopped working. My internal network still worked fine though, so it I know it's not the card itself or its configuration. After a bit of trial and error I discovered that simply running dhclient brings the connection up again, so it appears that something is interfering with the initial dhcp update to my ISP (or something like that; I'm no expert in this area. ) My usual policy in cases like this is to wait through two or three updates in the hopes that it's just a temporary problem, but it's been a while now and subsequent updates haven't fixed it.
I've tried looking around, but I can't come up with search criteria specific enough to narrow it down to my specific situation. I'm not even sure where to begin looking to diagnose the problem, nor do I know which package update(s) could've affected it. I'm not sure what might be useful, but here's the relevant entry in /etc/network/interfaces. I have it configured with a static internal address, with my router as the gateway.
Code:
# The primary network interface
mapping eth0
script grep
map eth0
[code].....
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Nov 1, 2010
I've just installed debian sid and see that I've the kernel 2.6.32. I was a bit surprise as on ubuntu I had the 2.6.35 and debian sid is supposed to be more up to date that ubuntu (maybe I'm wrong).So I checked what were the packages available :
mart@mart-laptop:~$ uname -a
Linux mart-laptop 2.6.32-5-686-bigmem #1 SMP Sat Oct 30 23:25:58 UTC 2010 i686 GNU/Linux
mart@mart-laptop:~$ sudo aptitude search ^linux-image
[code]...
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Nov 9, 2010
After an automatic update from Debian I get the following error while starting a root terminal:
An error occurred while loading or saving configuration information for gnome-terminal. Some of your configuration settings may not work properly.
Failed to contact configuration server: the most common cause is a missing or misconfigured D-bus session bus daemon.
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Oct 29, 2010
When I make a vpn connection to an openvpn server, I loose the internet connection.
The VPN works all right.
Server config (extract)
Client config
Client route without the VPN connection
client route with VPN connected (internet lost)
Is there anything I can do to the push rule of the servers's config file?
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Apr 19, 2011
I just purchased a router that supports IPv6 and configured my eth0 to use IPv6. I have tried automatic and automatic, address only with no results. My Windows 7 and OS X 10.6 boxes both work w/o issue of need to change settings. I have done a bit of Google searching, but not found much in the way of useful advice. Can someone point me to a good article or let me know that the product is broken at this point.
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Jul 8, 2010
i have recently configured squid with dansguardian. Squid was running on a whitelist mode, meaning i deny every single traffic, and allow traffic that matches with what i allow only.
this however, introduced a problem where i have to manually update the list of sites allowed for kids, which is not efficient. is there any websites where i can use' wget' to download recommended websites for kids, and plug it into the list of allowed websites.
or I'm thinking that maybe if there's some way to write a script where it will automatically add the search results to the list, from reliable search engines like www.kidrex.org.
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Sep 5, 2010
I'm working in France right now. And my internet access is through a router on a local network (LAN) of the hotel in which I stay. In order to have internet access I must type in my room number, my name, check the agreement and then click Enter.The problem is that the router cuts off internet every two hours.What I need is some script that does the followings:
- detect if there is no more internet connection (the LAN connection stays on)
- if there isn't to run the script that does all those things above.
What I've managed to do is the script that puts room number, name, check the agreement and click Enter using DejaClick, making it a bookmark and then open the firefox and run the script.The command that I've used in Terminal and which I think I can use in my script was:
[URL]
It works well. It's connecting to the net.What remains is the detection of the cut off of the internet connection.
Tried with Wicd, going to the properties of the wireless connection and then on Script. here I'm stucked.Don't know what to do anymore.It has the post-disconnection script option, but my LAN connection is not disconnecting, only the Internet access through this LAN is disconnecting.
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Aug 15, 2011
connect to the Internet through my newly bought USB adapter, and it works just fine now... But - after boot I can't connect to the Internet before i open a terminal and type
either: sudo modprobe ndiswrapper - from the ndiswrapper-1.56 folder
or: sudo iwlist wlan0 scan - from the root
Both commands are some I learned during installation of the USB device - I don't know if any other commands would work;
It would be nice if my device connected automatically - is this possible?
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Jul 5, 2011
AMD 64 Upgrade to testing last night killed my internet connection. The lan works, I can ping the dns server from my IP, however no mail, browser possible. Is something in testing broken again?
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Jan 23, 2010
I am running ubuntu 9.1 on a Dell Dimension 2400. After installing ubuntu on the pc, it was automatically recognizing my router and connecting to the internet fine via ethernet. Then, my roommate unplugged the router and it won't recognize it. I can't access my router settings, and ubuntu is recognizing it as "inactive" but every other computer in the apartment runs fine. My PC uses a broadcom ethernet controller, and my router is a Linksys wireless N.
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Apr 16, 2010
I added RAM to my Acer (dual boot Windows XP / Ubuntu 9.1). Windows continues to work. Ubunty will no longer recognize the internet connection. I don't know if adding the memory is what did it, but I am puzzled why I can use the ethernet card from Windows but no longer from Ubuntu.
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Aug 31, 2010
I was downloading the Android SDK when, mid download, I lost my internet connection. Now I cannot connect to the internet via hardwire connection. I can still connect on Vista, and I can connect via wireless, but I cannot have a hardwired connection.
I was following these instructions [URL]
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Mar 6, 2011
I was having trouble with some software detecting ports so i removed ufw and now have no internet
Ive tried and none of these work:
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Jul 25, 2011
I was running 8.04 and my internet (Comcast) comes via a Motorola SB5100 cable modem then into a Netgear router then into my Dell. When I upgraded to 10.04 yesterday, I lost the wired connection. The wireless connection still works fine, but I have not been able to get a wired connection. Also, most online solutions reference the Network Manager, which is nowhere to be found.
Anyone have any solutions? I would be willing to revert to 8.04 if needed, as that worked fine, and obviously I quite regret the upgrade!
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Dec 8, 2010
We have an Asterisk machine that we suspect periodically loses internet connectivity, causing all calls to drop. First, would this sort of thing be logged anywhere out of the box? I haven't noticed anything in /var/log, but that doesn't mean it's not there. If this is not typically logged, how I might go about logging it? I'm currently running a bash script from cron every 5 or 10 minutes which pings Google and writes success or failure messages to a log file. This works fine for extended outages, but if the internet connection drops and comes back between cron runs, it won't be caught.
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Jun 13, 2011
after giving me no problems whatsoever (currently 10.04 Lucid Lynx) I lost wireless connectivity on my laptop after the following updates were processed yesterday:
Commit Log for Sun Jun 12 16:18:28 2011
Upgraded the following packages:
dkms (2.1.1.2-2fakesync1) to 2.1.1.2-2ubuntu1
flashplugin-installer (10.3.181.14ubuntu0.10.04.1) to 10.3.181.22ubuntu0.10.04.1
flashplugin-nonfree (10.3.181.14ubuntu0.10.04.1) to 10.3.181.22ubuntu0.10.04.1
[Code].....
but as it all worked fine before and this was just an update not an upgrade I suppose drivers etc are all OK anyway.
Also, rfkill showed nothing was blocked to need unblocking, and ifconfig gives a permissions error
I have a wired connection operating without any problems at all.
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Mar 12, 2009
On one of my F10 boxes yesterday, I installed several NM packages with yum update after being advised of their availability. Today, (the first reboot since installation) I no longer have network access on that box.
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Jun 16, 2011
I installed Fedora today, and I automatically had internet connection, I never had do configure anything myself. Then, I was playing around with VPN for a good while (trying to set up the VPN connection to my University), and now, I suddenly lost my connection to the internet!
But only Fedora can't connect anymore, the Windows PC has connection as well as my Mac OS X (I dualboot Linux on my MacBook). The Ethernet connection works as well, when I unplug the cable, Fedora gives me a message, but I just don't get into the internet!
Does anyone have an ides what I have to do? I don't know anything about network connections and I'm new to Linux...
I already restarted the Computer, but that didn't work, and Google didn't really held either.
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Mar 16, 2010
As I view it, Ubuntu has a great security risk in that it still allows internet access when the VPN connection has been lost, for whatever reason. As it is now, when the VPN connection fails you get bumped back to using your regular IP, and whatever you are doing becomes transparent to anyone watching. This is simply unacceptable for an allegedly secure platform. Does anyone know of a way to fix this with a script/program, or is there a distribution/OS that allows this? Windows re-dials the vpn automatically, but still allows internet access in the mean time.
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Nov 24, 2010
I am a non-techie, have been gratefully using Ubuntu 8.10 for a few years for the basics: email, web, documents, photos. I have somehow lost my internet connection, but strangely my email still works...!?!? My router is showing all the correct green lights, but I cannot get to any url. I am posting this thread via work (windows) pc. I have searched on this forum and in anticipation have done as much homework as possible, see below.I have a Netgear wired router. I cannot find Network manager on the menus and tried this from the terminal:
Code:
network-manager
bash: network-manager: command not found
networkmanager
[code]....
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Apr 23, 2011
I do have a problem with my internet connection at home, I've a Huawei router and ubuntu 10. When I connect to the internet whether wireless or wired I become able to surf the internet for less than 10 min then it cuts off! and to be able to surf it again I need to restart the whole system!
I used this command to restart the networking but in vain
Code:
sudo /etc/init.d/networking restart
On windows I do not face this problem with the same internet connection. I do not face it either when I'm using my campus wireless connections using ubuntu/windows!, so the problem is related to my home connection+ my OS.
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Apr 24, 2011
Like the title says, is there a way to restart the computer if the internet connection is lost?Is this possible on ubuntu?
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Feb 1, 2010
i have a acer aspire one (zg5) with a 2 week old installation of unr. shortly but not immediately following my last update my wifi no longer functions. when i go to the network connections tab in my toolbar it does not list available wifi networks. does not apparently recognize wifi capability at all. but the wifi worked right off the rip on new install.
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Sep 1, 2011
After I updated ubuntu 10.04.3 and restarted my PC, something weired happend and my wired connection was completely lost. I tried different things but it seems that I have lost my ethernet connection. I only have ethernet card and the interface was set to eth0 which is not recognized anymore.
The /etc/network/interfaces includes the following commands, which btw I tried to play with a bit by commenting and uncommenting the lines but was not helpful (but this is the original one):
Also in /etc/udev/rules.d I deleted 70-persistent-cd.rules hoping that it would be automatically regenerated but it did not,
Here are some messages I get :
lspci:
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Oct 1, 2009
For the past few days, the automatic GUI update has been crashing, complaining of a "Transaction error."
Here is the output that pops up in a separate window:
Code:
I tried the following:
Code:
And got the following (similar) output:
Code:
I very rarely use xfce and I don't quite know what exo is, but I'd like to fix this problem if it's not too involved.
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Sep 28, 2010
I have a windows 7 ultimate host machine, installed oracle virtual box on it. Made a iso image to boot fr fedora. All this is fine when the installation is complete, it asks for reboot. Reboot done. Then I went to terminal. Did a SU - root to get into the root. Then I did a firstboot command to enter information. I created a user for myself and at the end rebooted the virtual box.
When it starts up, it does not show my user. It just shows "Automatic Login" and it logs in as Live System User. Even if I try to switch user then it gave me a authentication failure when I enter the credentials of the user which I created. If I try to create users manually using system administration, the user is lost after reboot. I have tried all possible steps...as instructed on the net.
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Mar 16, 2010
I thought to uninstall Gnome Network manager since it was always asking for to connect with wireless internet but it was working fine with wired internet.I uninstalled it and installed wicd. and then for some unknown reasons the internet disappeared.Kindly let me know How can i get back network manager without having internet and make internet work on my computer.I did searched a lot on Ubuntu forums using somone's else computer but no success.So if you let me know how to approach the problem in right manner it shal be great .
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Apr 6, 2011
I have been using ubuntu netbook 10.10 on my Dell Mini 9 for the past few month without any problem; it connects wirelessly to the internet via a wireless router. Yesterday in the middle of web surfing, suddently firefox cannot see any website outside of my home network (Firefox displays Server not found page). No help when I rebooted a few times and connect to my home network via wireless or even wire cable; it can access files in my network file server (DNS-321) but not the internet. My desktop computer running Windows Vista and ASUS media player has no problem accessing the internet.
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Apr 18, 2011
After i install it i lost my internet connection . i got a message " Wired Network " " you work offline ". i use cable ADSL ,.... my Pc information HP Pavilion 6700 running with both Window 7 & Ubuntu 10.10 note... my network connection work correctly on W7.
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Sep 4, 2010
Recently i got bb internet connection, how to configure my linux pc to internet using DSL modem i.e in bridge mode.
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