Ubuntu :: Network Shuts Off And Internet Stops Working
Mar 21, 2010
I just recently erased my hard drive and installed ubuntu 9.10 all over again. I updated as expected and everything was going well, until, my internet stopped working after maybe 40 mins or so after a successful boot. Now this same thing happens every 40 mins and I have to reboot the computer by forcing my laptop to shut down by holding down the power button. This also made me aware of another problem when restarting or logging off my laptop. The laptop hangs at that terminal-syled screen and the underscore blinks and fails to shut the computer down/log off. I resort to holding down the power button to restart. I am using a wireless connection with WEP key protection.
Atheros network chip
Laptop Acer Aspire 5532
It just happened again..... I am typing now in tomboy notes....
Time to restart again......
I also try to open terminal and it fails to function (after the internet stop working), any reason for that? I would also like to note that the signal strength decreases as time passes by.......
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May 7, 2011
Sometimes my file share network stops working,and will then work again.I'm lost with this problem. The server pc is a Zenwalk pc.The other pc is a win7 pc. This error only occurs on Zenwalk. When i run puppy from the live cd the file shares are always visible,without fail.Under puppy i use pNethood. When the ping command is used there is no problem, and the pc name can be pinged.This is shown below:
[Code]...
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Apr 18, 2010
This holds true in Transmission and NOT in Vuze. UPnP is enabled, ports are randomized and open each time. Pings to outside still work fine, but I cannot browse to websites (404 errors) when the app is running. I'm stumped, is Transmission locking all other in bound traffic/ports except the one it wants to use?
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Mar 2, 2011
Not sure if I've listed the specs of this machine before, so I'll do it again. 'm running an HP Pavilion 760n with 512MB of RAM and (I think?) a Pentium III processor... not sure on that one right now. It's currently running a laptop version of Ubuntu 10.04.I went to log into my online classes tonight only to find that the computer wasn't responding at all. I did a hot shutdown and restarted it, and now the system isn't detecting the internet connection at all. It should be noted that the connection was working perfectly fine earlier today, perhaps 6 or 7 hours ago.I know it's something to do with my computer and not my router, as I'm on my wireless network from a Windows 7 laptop and it's connecting just fine.
In viewing another thread,..lems+-wireless, I found a bunch of commands that it was said would be helpful diagnosing this issue. That said, below is the output of all the commands that I could think of.
Sudo ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:e0:18:5c:45:7a
inet addr:192.168.2.1 Bcast:192.168.2.255 Mask:255.255.255.0
[code]...
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May 31, 2010
Im having problems with Ubuntu 10.04. My wireless disconnects frequently and firefox seems to stop working. it seems the connection times out sometimes when firefox stops. other times the connection just disconnects. When I was running 9.04 everything worked and nothing disconnected, so I know its not my computer.
My laptop is an IBM t40, 1.4 ghz, 2gig of ram.It does not seem to mater if Im using the wireless or the wired connection. The problem happens either way.does anyone have a solution for this?
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Nov 13, 2010
I'm running Ubuntu 10.10 Maverick Meerkat 64-bit on my desktop with a wired internet connection (with no firewall). For the past 2 days, I have observed that1. Firefox randomly throws up errors like "Problem loading page" whenever I click on a hyperlink. When I click on Reload, the page loads up just fine. This has been happening a lot recently..and I do not remember updating anything consciously. By the way, ipv6 is disabled in Firefox.2. The network stops working all of a sudden (usually indicated by the Firefox error). The Autho Eth0 indication is active, but I am unable to connect to any external machine.
3. Needless to say, this error is manifesting itself in apt-get as well. I get "something wicked happened" errors all the time, and am unable to download or install anything.That this is not a problem with the ISP is obvious because I also have Windows (from which I'm typing this, ironically), which is able to access the internet.Is this a bug in Ubuntu 10.10?
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Feb 6, 2010
i did install opensuse and everything ok; i did configure it to be the server and gateway for a little office network Everything seems to be ok most of the time but sometimes (usually between 5 and 7 pm each day) internet stops working and there is no way to let it start again. So i turn off the suse, switch all cables to the old fedora server, just turn it on fedora and internet works. Turn off fedora, connect suse, let it start and everythng ok...it happens all the times
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Sep 1, 2011
I have a wireless network using this driver:
Bus 001 Device 002: ID 0bda:8187 Realtek Semiconductor Corp. RTL8187 Wireless Adapter
and everything works fine for some time. After a few hours or maybe less (if I push bandwidth to the limit) the Internet freezes. I can't even ping my router. If I disconnect and reconnect either the device or the connection via network manager , it does work for a minute only and then freezes again. If I restart Ubuntu entirely, it works again. But for a while...
It works 100% in Win7 and I have no problem at all there. But I am very annoyed that I cant have reliability in Ubuntu. I want Ubuntu as default.
It has something to do with drivers or an inner variable or buffer or something.
At least, is there any way to reset my network connection without rebooting the OS?
I tried sudo /etc/init.d/networking restart but it gives me: Ignoring unknown interface wlan0=wlan0.
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Jul 25, 2011
I have a wireless cable modem/router and a PCI-E 1x wireless card in my desktop PC. It works perfectly until I connect my Ethernet cable to my local router and printer, no more internet connection. I am guessing there is a setting somewhere that tells the networking software that the hard wire connection is the primary internet gateway. How do I tell it to use the wireless as the primary gateway?
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Jan 19, 2011
this is with both network manager and WICD, a problem i've had since i got ubuntu - multiple wipes and reinstalls the wifi is supported out of the box, the problem i've randomly run into since installing is, it will randomly stop detecting networks "no networks detected"
i've noticed over time as this as been happening, that it usually happens whenever there is a high load - multiple videos going on multiple tabs, videos queued up etc. its never happened during regular browsing - theres always a lot going on when it happens, almost like it collapses. the only way to fix this, is to quit the manager - shut off the computer (restarting doesnt work) and then it comes back after
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Aug 10, 2010
I have an issue on a few servers where IPv6 stops working after a reboot. I can ping anything within the same subnet but anything outside of that it gives me host unreachable. I believe that it is not routing for some reason, but I am not sure why. I have tried adding a default Ipv6 route for Eth3 but nothing seems to work.
uname -a
Linux server-1 2.6.27.19-5-default #1 SMP 2009-02-28 04:40:21 +0100 x86_64 x86_64 x86_64 GNU/Linux
Code:
route -A inet6
Kernel IPv6 routing table .....
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Aug 8, 2011
I have one major problem that is going to cause me to switch back to windows. My wireless network shows connected and works fine for a while but periodically stops working. It always says it is connected but sometimes stops working to where I have to disconnect and reconnect for it to start back up again.
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Jan 21, 2011
my netbook (running 10.10) has recently decided to only work with my wireless for a short while after connecting. After this time, it just won't load a page at all, but remains connected to the router. Disconnecting then reconnecting to the network allows me to use the internet again, but only for a short while. This is a recent problem, and the netbook used to "just work" with wireless.
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Jul 17, 2009
I'm having a bizarre problem where my network connection stops working randomly. At first I thought it was a DNS issue since Firefox simply chilled out on "Looking up [hostname]" until it timed out, but after further investigation (pinging IP's, "host" and "dig" being unable to reach servers) it became apparent that I couldn't even access the DNS servers i.e. the Wicked Connection of the East was most sincerely dead.
There are two strange things about this: one, there are no errors except "timeout". The network manager is happy, Firefox is happy until the lookup fails... Two, the failures only start *after* DHCP configuration. DHCP configuration never has any trouble sending or receiving packets. I'm going to try static IP and whatnot to see if that helps, more information later.
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Sep 21, 2010
I just started using Ubuntu at the advice of a friend. I am running it from a flash drive.I have a wired network that always works fine with Windows on this computer.After starting up Ubuntu it connected right up and I was able to use it. Then, out of the blue the machine shut off. Upon restart, I was unable to connect to the internet.I reinstalled Ubuntu to a different flash drive and it worked fine once again.I left the computer running while I went out for supper, returned and the computer was "asleep" and would not wake back up.I shut off the computer and restarted Ubuntu.No internet again. As always, it works fine in Windows.Also, BOTH times this has happened, the OS says I am connected to the internet, and I can turn the connection on and off, but it is not connected. This happens even if I reboot the computer. (I have a cable connection.)
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Dec 17, 2010
I use an internet connection with a proxy. I have set the proxy in Firefox and systemsettings so now I can browse the web and I can ping Google from Console. But when I start Software Management, it says "Cannot access installation media". Whats wrong?
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Aug 25, 2010
I have windows 7 dual-booted with ubuntu. Im having issues with ubuntu however and i am very new to using linux (sorry). When i intalled ubuntu and ran on it a seperate partition everything seemed to work fine until i tried connecting to the wireless internet in my university. This is what's driving me crazy. When i first turn ubuntu on it connects normally to the internet, and i can usually get onto google for 30 seconds. After 30 seconds, the wireless loses its connection and the internet shuts off, even though it can still detect the wifi in the area. I try to reconnect but it consistently fails... I also get some sort of .local avashi error message (dont remember what it said exactly) for a brief moment and then it fades away. Can someone tell me what to do? This is driving me crazy. btw, i have a realtek rtl8191 wlan nic driver installed on windows, so im assuming thats the driver installed on linux to. Do i need to install a different version like kubuntu or xubuntu?
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Jun 6, 2010
When I try to transfer a large file lets say 700Mb or so my wireless shuts down and i have to restart my ubuntu computer the other computer is vista.ubuntu is on a wusb54gver4 and vista is going through a wrt54g tm running dd-wrt mega.I
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Aug 18, 2011
I've just upgraded to xubuntu 11.04 and every thing seems to work fine and better than version 10. The only problem I have is that after some hour of working programs like vuze, amule, qbittorrent shuts down and disappears. if example: if I leave those software on for teh whole night the morning after they are closed and i have to restart them again
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Aug 17, 2011
i installed a linux flavor (Ubuntu 10.04 LTS, Ubuntu 11.04, and then Linux Mint).. They all gave this same problem about the wired network (see the picture). The connection seems to be fine but i can't connect to internet or even to my router. Which is weird since it knows my router IP 192.168.1.79. Wasted the whole night trying to figure it out but i just can't understand why. I have a separate partition on this computer to run Win7 also and confirmed that the network connection is working.
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Apr 4, 2010
Just recently installed Opensuse 11.2 in a KDE environment. The problem I am facing is that when I connect it to my network either via wired or wirless neither getting internet or access to the network although the network manager shows the connection as active
I am using a Dlink Di-524 Wireless Router at home
The Wirless router for the computer is Broadcom BCM 4312
Was able to install the drivers for this from the packman repository
Also when I connect my laptop directly to the internet connection via wired it is working fine. However if i connect it to my wireless router either over wifi or thru wired it just shows connected but i can neither access internet or other computers on the network.
Have checked the wireless router other computers (windows and ubuntu are being able to access the internet via it)
Results of my ifconfig-a command when i am connected over my wirless connection code...
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Apr 4, 2010
I'm new to OpenSuSE and have just booted up an Acer Aspire 4736z laptop with the 11.2 livecd. All of the specs (gathered from lspci -n) are available here: Debian HCL - Acer / Aspire 4736Z. Wired internet does not work. I have tried `modprobe atl1e` then `service network restart`to no effect. NetworkManager says nothing is plugged in (perhaps a hotplugging issue?). eth0 is listed in ifconfig.
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May 27, 2010
I have just installed openSuse 11.2, but my network connection isn't working. I'm new to linux so i don't know how to approach this problem and how to diagnose what's the problem. Few information about my system: I have Asus X51L laptop with KDE installed. I have cable internet wired to laptop via ethernet network card. In Windows XP my connection is working without problems, but in Suse I have problemsThe main problem is when I enter Suse PC light (on modem) is not working, and it should blink (at least in Windows does). Cable and power light is turned on, and that's good.
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Jan 15, 2010
I've installed opensuse 11.2 on an old IBM thinkpad. The install went without a hitch and when I got to the desktop I inserted my Dlink DWL-G132 wireless USB adapter. Opensuse immediately recognised that a wireless device was attached and I could see my wireless network listed. I entered my WPA password and was able to connect to my routers configuration page by entering 192.168.0.1 in the URL bar of firefox. For some reason I am unable to navigate to any webpage. When I enter a URL firefox acts as though there is no internet connection. The only way I can get the internet on my laptop is to connect it to my router with a cable. I used a wired connection and ran the update utility thinking that perhaps an update would fix the issue but it did not. I know the adapter works because the laptop used to have windows xp installed and I could connect fine with that.
Does anyone here have any idea why I would be able to connect wirelessly to the routers configuration page but not to the internet? I appreciate any advice anyone may have.
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Jan 23, 2010
recently ran into a problem with my internet access. Im using open suse 11.2 on a Dell Vostro 1520 laptop. I managed to get my wlan running and i can use firefox to access my router. In my router the laptop is also showing as connnected, dhcp reserved an ip for it.However if i try to browse the internet, no page is loading, actually no software that needs access to the web is working.
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Jul 3, 2011
I've been dual booting Windows 7 and Debian on my desktop ever since. But recently I installed Debian again on a new laptop that I recently bought and unfortunately it's being very different from my first successful installation. The first problem is that Network Manager is not picking up internet on the new laptop. The Wireless tab is grayed out, so I can't click it and look for a new one. I've been using Wired internet since, but if I want to take it to work I have to have it be Wireless-able. Currently my Wireless Card is a Broadcom 4313 802.11 b/g/n which I'm fairly sure is supported. The second problem is installing Firefox. On my first installation it worked fine, and the bin file loaded and everything. However, for this second one that's been a completely different situation and the bin file hasn't worked (by this I mean I can't double click it to open it).
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Feb 19, 2010
I tried to set up my internet connection using the network manager and not the classic iufp method. At first it just didn't work but after deactivating IPv6 I got it working: firefox can connect to the internet. What troubles me is the online update with Update Applet. The following message pops up: "Error: packageKit error repo-not-available: Failed to download /media fromAlso when I go to Yast->Software->Software repositories I get the msg:Systemadministration is blocked by PID 2459 (/usr/sbin/packagekitd). Close the application and try again.Using the command "sudo zypper refresh"eates the same message.I spent already hours trying to figure out the problem without luck
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Feb 11, 2010
Internet stops on downloading. I have windows xp dualbooted and it hasn't this problem. I am sing 8.04 LTS
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Jun 30, 2010
Internet connection has been very unstable on my system latley. Think it was because of last update.
Basically for example i watch a video on ..... and it never fully loads. Even when i browse pages dont fully load and i must wait a few seconds before i press reload.
I am connected through cable. Network is working fine on other OS
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Jul 29, 2010
My PC is connected to an modem (DHCP) with IP 192.168.1.21 on eth0 Internet works perfectly I have installed an additional LAN card and configured it as eth1 with IP of 192.168.0.1 When I connect this LAN card to a LAN switch which in turn is connected to 6 other PCs, the internet stops working. As soon as I switch OFF the LAN switch, I am able to access internet. The IP addresses of the other PCs are configured as 192.168.0.2 etc. with gateway as 192.168.0.1 and DNS same as the DNS on the external interface. I can ping 192.168.0.1 from the LAN but neither LAN nor the main PC can access net. I was planning to Masquerade and NAT the other computers without using squid
My setup is as follows
ISP - Modem(192.168.1.1) - Ubuntu desktop 9.04(external interface eth0 192.168.1.21 & internal interface eth1 192.168.0.1) - switch - LAN (comprising of Ubtuntu 9.04, 9.10, 10.4 & XP machines with IP 192.168.0.2 - 8 and gateway of 192.168.0.1) I did NAT as per [URL]
This worked perfectly well 1 day Next day onwards whenever the LAN switch is "ON" the main Ubuntu wudnt get internet and the internet connection would work only when the LAN switch is turned "OFF". Even if all the PCs in LAN were to be switched off, the main Ubuntu would behave similarly i.e. internet would work only when switch isn't connected to it or switched off.
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