Networking :: Internet Connectivity Drops With Ubuntu 10.10
Jan 23, 2011
I had my desktop running ubuntu 10.10 at my sisters house hooked up to a router sharing internet with her boyfriend never had a problem with it there. I moved into my own apartment this week plugged the cable modem directly into the broadcom ethernet card and couldn't get an ip or anything it wouldn't connect period so I ended up hooking it up usb which works but only at speeds of 5-7mbit when I have 15mbit connection. So I put another ethernet card in hoping it was just problem with the card and tried it that worked.
I got a connection but it was incredibly slow like getting maybe 5k a second so I open network tools in administration menu and start pinging google. While I'm waiting on a bandwidth test to complete and it takes off getting like 20mbit keeps that connection for a while then out of nowhere just drops to almost nothing. Again for a few minutes then falls off completely so I restart and it does the exact same thing starts off slow then something clicks and it works great for 5 min then nothing?
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Jan 17, 2011
I recently got a HUAWEI E1630 HSDPA USB Modem and it was working fine until recently. Recently it starts to drop the connection and in /var/log/messages I can see a pppd error "Protocol-Reject for unsupported protocol xxxx". The protocol number is random. Only way to resume is to unplug and replug the device. The happens very frequently and hence the device is not usable.
To isolate the service provider end, I use the same SIM on a PROLINK HSDPA USB Modem and it works fine. Also I use a different SIM from another service provider in this device and the issue still exists.
I am on Kubuntu 10.10 with all the updates to date. Should I report a bug?
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Jan 21, 2010
Installed Fedora 12 recently.
For some reason, my network connectivity drops out randomly. This has happened between 5 minutes to 1 hour of booting and logging into the machine.
When the internet does work, its great, and super fast !
When it drops out, Internet stops working, cannot ping to external site and I cannot ping my router 10.1.1.1
I have onboard realtek network ports on my motherboard.
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Jan 7, 2010
We have three computers at home. I have the only one running Linux, the other two are running Windows XP and using Belkin Wireless G USB Adapters. I started using Linux around November, and used a powerline ethernet cable. (It consists of two parts. One part you plug into your router and the power socket beside it, and the other you plug into your computer and the power socket beside that. It then uses the power lines as a network, and acts like a normal ethernet cable. I used the 'Auto eth0' connection without much problem). Back then, my internet would stop working once every few hours but only for firefox. Other programs such as bittorrent and Spotify continued working.
However, since I got back from holiday a few days ago the situation's worse. The internet regularly pauses (every few minutes, including spotify and msn) for about 30 seconds, and then comes back. Downloads are not cancelled, as they are when I am disconnecting from the internet, they merely seem to pause. The other two computers in our house don't have this problem, and I have tried the wireless adapter, yet it seems to pause at the same times as the wired connection. I know that it too used to work back in November.
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Apr 18, 2011
I have a server with two ethernet ports. I configured eth0 to be static, set at 10.1.10.148. I plugged in another router into the other ethernet port in order to configure that router. I configured eth1 to use dhcp. Using /etc/network/interfaces rather than gnome network manager. When I did this, I lost internet connectivity (internet routes through eth0 of course)
- Why did I lose internet connectivity?
In order to recover internet activity, I had to disconnect the new router on eth1 of course, and do sudo ifdown eth1. That wasn't enough however. After rebooting numerous times and pulling out my hair, I finally tried configuring eth0 as dhcp, rather than static, and this fixed the problem.
- Why didn't sudo ifdown eth1 solve the problem? What information was saved between reboots that somehow remembered that I plugged in the new router? Because my thinking was if /etc/network/interfaces was identical, and the network topology was identical, after a reboot everything should be restored, but it wasn't.
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Nov 20, 2010
My internet connection drops randomly in ubuntu but works fine in XP.The connection is not disconnected but i cant browse any sites,so what i do is i will reboot my system so that i can surf again but after few minutes the same problem is happening again
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Apr 21, 2010
I have an iphone, I am trying to get internet connectivity to that phone through wifi. I dont have a wifi router. But i do have a laptop with wifi card. I am connecting to internet via cable modem. In win7 I used to create an accesspoint and do the ics from ethernet card to share via wifi card. It used to work perfectly.
Now as I am sing ubuntu, i want to do the same. I have intalled firestarter, and shared the internet connection through wifi card(wlan0).After this I created an accesspoint using the gnome network applet. Now i can connect my ifone to ths accesspoint. But there is no internet connectivity in my fone.
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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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Jun 25, 2011
Wife's laptop has AR5001 Wireless Adapter laptop model is Toshiba Satellite A215
Problem : Wireless networking randomly loses connectivity and can not regain connectivity, the only apparent solution is a full power down , this is not even certain to work. The card works under Windows, she hates Windows. (I love her for this) I know it's not faulty hardware , because it will work for days on end under Windows without problems.
Things I've tried : madwifi drivers (any and all versions available) : These increase stability of the signal and seem to delay the inevitable however it still happens. When using these drivers the only option is to unload them modprobe -r then reboot then remove them again and re add them. It makes no sense why this works, and if I don't remove them prior to rebooting it will not work.
ATH5K drivers : These are pretty much junk, results are unpredictable at best, sometimes it will work perfectly for a few hours, sometimes it will not work at all. Nothing is repeatable, I can't seem to force whatever condition is causing this. rfkill does not show the wifi being blocked (hard or soft), unblocking it anyway does nothing, only way to make this work and it's iffy is to fully power down wait 5-10 minutes turn it back on and it MAY decide to work.
Firmware update : Updated the Toshiba BIOS to the latest version of the firmware 2.0 no joy here either. Same issue both sets of drivers.
Tried different distros and kernels : I've tried Mint 9, 10 ,11 ; Ubuntu 10.10, 10.04 , 9.10 and 11.04 (which is currently installed) , Fedora and OpenSUSE. All are giving the same problems. I have also tried a slew of different kernels no joy from any of them (I'm not at the computer with the issue now I will post exactly what kernel versions I've used when I have access to the machine).
Another useful bit of information, the hard switch to disable/enable wifi WILL disable it but turning it back on does absolutely nothing. The hotkey does nothing at all. The bios does not have an option to disable or enable the wireless card.
I will also post the typical lsmod , lspci , iwconfig all that good stuff when I get back to the computer in question. I'm probably just going to buy a PC card for it and give up on that one, but this is driving me insane and I would really like to see it resolved even if I do replace the hardware.
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Nov 9, 2010
I can connect to anything locally, I can SSH in locally but nothing works from outside my network (can't access pages in apache, can SSH, etc.) I've checked the logs I can think of, but what should I be looking for? The last thing I did today was add a FW rule to log and drop from an IP, saved my iptables to a file in /etc. (this was at 10:45am). The last time I successfully logged in remotely 1:03pm. I connected multiple times in between. I've rebooted remotely once or twice. That's it. I've already flushed iptables.
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Apr 23, 2009
I've just installed Fedora 10 to basically work as a NAS for another machine - but also serve a couple of web pages. After having alot of issues with network manager (with it changing the subnet so nothing would work), I'm now almost there:
I have two network cards connected in the server:
1) eth0 connects to a switch that ultimately connects it to the net (on a 10.0.0.* network)
2) eth1 connects directly into another server for backups (192.168.0.* network).
Now when I setup eth0, I get network access can ping/ update/ surf the net - absolutely no problems, but when I connect eth1 in - the net dies and nothing works, I can ping devices on both the 10.0.* and 192.168.* networks, just nothing past the gateway. I presume this is either a route or DNS issue, but am unsure about where its falling foul - both the resolv.conf file looks fine as do the ifcfg-ethx scripts.
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Apr 23, 2010
I could not find an answer to this. I can connect to the internet no problem after I edit the connection name to NETGEAR instead of our last name. After a while it looks like it renews the connection and created a new one with the wrong name. The connection drops. It looks to me it is not using the same wireless connection each time but creating new ones that do not work for the above mentioned reason. What can I do to stop the loop and have it use the same connection always?
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Jun 20, 2011
I am new to UBUNTU. I installed the latest one alongside windows 7. I am having problem with the internet connectivity. I configured the static ip settings right I guess. Edited the Auto eth1 and assigned ipv4 settings manually and entered everything correctly.
Address 192.168.xx.xx
Netmask 255.255.255.0
Gateway 192.168.xx.xxx
DNS Server xxx.xxx.xx.x, xxx.xxx.xx.x
Do I have to put MAC Address as well? Which is addressed as 'Network address' in Windows where I put this MAC. I have on board Realtek RTL8101E Family PCI-E Fast Ethernet NIC (NDIS 6.20) Network adapter. Do I have to install the driver?
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Feb 11, 2011
I'm using Kubuntu 10.04.2 LTS on a Bangho laptop. Kernel 2.6.32-28-generic i686. My card is: Realtek Semiconductor Corp. RTL8187B Wireless 802.11g 54Mbps Network Adapter iwconfig wlan0 gives me:
Code:
wlan0 IEEE 802.11bg ESSID:"Default_WLAN"
Mode:Managed Frequency:2.442 GHz Access Point: 00:06:4F:8D:B9:AF
Bit Rate=1 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr: off Fragment thr: off
[Code]...
Usually when this happens, for 10 or 20 seconds it appears to be connected (i.e. the heart symbol is there) but I can't ping google or my router, then it "realizes" it's disconnected. It takes one or two attempts to reconnect successfully by pressing the "active" button. Meanwhile throughout the disconnections and re-connections the signal is very strong (98%).
I had the same problem with my old access point, at first I thought it was the cheap/old hardware, so now I bought an "ENCORE ENDSL-A2+WIGX2 | ADSL 2+ Modem with 4 Port Wireless Router". The problem persists only with a stronger signal.
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Mar 3, 2009
I'm new to Fedora 10 and still a newbie with Linux in general. I installed F10 on an old PC I had....and the install went well..however, I'm having Internet Connectivity issues.
Here is what I did so far:
Did an ifconfig command and I have the following:
pan0 Link encap: Ethernet HWaddr D2:30:36:AF:61:95
inet6 addr: fe80::d030:36ff:feaf:6195/64 Scope: Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:30 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes: 0 (0.0 b) Tx bytes: 8676 (8.4 KiB)
When I go to the Network Configuration Panel I see the following:
Status: Device: Nickname: Type:
Inactive pan0 pan0 Ethernet
Tried to activate and it states Activating network device pan0, please wait... determining IP information for pan0.... A few minutes pass by then. It indicates it failed. Cannot activate network device pan0! I have disabled the Controlled by NetworkManger and enabled the Activate device when computer starts.
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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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May 28, 2011
I just installed F15 on a laptop that previous had F12 working well. During install, it finds my wireless card and seems to set it up fine. The full install ran with the wireless active without any problem that I could see. Now, when I start up, I see Network Manager tells me that the wlan is active, but it doesn't show my specific network. If I click on the NM tray icon and open up the panel, my network is shown but it is not "active".
I can double click on it and it will become active - shows the little globe next to the antenna. This works fine for about 2 web pages worth and then FireFox 4 stops being able to find web pages. If I go back to the panel, double click on my wireless network (which looks like it is active already), and reactivate it, I can get the page I was looking for in FireFox, but within a couple of minutes it will stop.
Likewise with yum, while I'm installing software, I'll occasionally get errors like this:
[URL]: [Errno 14] curl#6 - "Couldn't resolve host"
If I reactivate my wireless network in the NM panel, it continues fine. Other computers/phones connected to this network seem to work fine. Is NM known to be problematic in F15?
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Jul 20, 2011
I am using both win 7 and ubuntu using grub. If I connect to internet in ubuntu its working fine
but if I connect to net using win 7 internet is not working. However if I connect internet in ubuntu and restart win 7 without switching off router I can access net in win7 even if I switch off router and start again its working fine. But when I shut down system and router and switch on in win7 its not connection.
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Feb 4, 2010
since ive upgraded to ubuntu 9.10 i have noticed that when i leave my computer for a while or just stop using it or leave it idling my internet connection drops. my comp doesnt hibernate or go to stand by. does anyone know any reasons for this? or know how to stop this? its hard to download something when my comp drops the internet connection.
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Oct 5, 2010
I just installed Ubuntu 10.04 as a dual boot with Win/XP, using the text based installer. Installation seems to have completed OK and Ubuntu boots as expected - but Firefox cannot find any web-page.
How do I start look for the problem cause?
I should say that I previously had installed Kubuntu 10.04 (64 -bit). It was installed for a few months up to May 2010, but then it suddenly lost all internet connectivity after I hibernated the system. Win/XP continued to work with no error. Despite some months of help and advice from the Kubuntu forum, I was unsable to solve the problem. Indeed one piece of advice resulted in the overwriting of my Win/XP installation. I have now re-installed Win/Xp and decided to install 32-Bit Ubuntu - but I am back into the 'no internet connection' problem again. Win/XP works fine.
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May 2, 2011
The internet has been working happily on my Mythbuntu machine for many months but stopped working overnight.If I try to do "sudo start networking" I get a "Job failed to start" message.There's also a solid orange light on the ethernet socket.As it's been working for months, I don't think my interfaces config needs updating.Looking at what's been updated recently on the system:
1) I've configured the machine to wake from USB. It was working for a couple of days so I don't believe this is the issue.
2) I set up wake-on-lan with ethtool. Again, this was working (although it did seem to disable wake-on-usb and required a reboot to fix)
3) Update to 11.04 - I said no to this, as 10.10 was working very nicely indeed.
I've disabled wake on lan and rebooted. No joy.
ethtool detects the ethernet controller ok and it's listed in lshw.
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Oct 8, 2010
I am using centOS 5.My internet connection drops at irregular intervals and it restores only after reboot the system.Even if i deactivate and re-activate it using Newtwork cofiguration utility,It shows its active but it cannot open any page.
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Oct 18, 2010
Every now and again my internet drops out for no apparent reason. I try dhcpcd -k eth0/dhcpcd eth0 and nothing. I try modprobe -r <driver> modprobe <driver> dhcpcd blah blah and nothing. /etc/rc.d/rc.inet1/2/d restart. Nothing. The only thing that works is rebooting my system. how to reset my connection without rebooting?
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Jan 26, 2010
Lately, my internet connection stops for several minutes and then re-connects. Since there are few issues to debug here (router, modem, ADSL, internet provider), I would like first to measure the failure rate. Is there a utility or script that will do the following: Wake every 1-2 minutes, verify a certain web page is available (doesn't matter which). If it fails: dump a line to a log file and get back to sleep. If OK - get back to sleep. Is there such a utility?
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Dec 9, 2010
how to install firmware-b43-installer without internet connectivity. I downloaded firmware-b43-installer from another computer with internet. Then I found out from the error messages I also needed b43-fwcutter. So I also downloaded then installed b43-fwcutter. b43-fwcutter installed with no problems. Then I tried to install firmware-b43-installer again with no luck. I saw in the error messages it said something about broadcom-wl-4.150.10.5.tar.bz2. I have no idea how to install a tar.bz2 file.
Here is where I downloaded the files I needed.
http://archive.ubuntu.com/ubuntu/poo...10.5-4_all.deb
http://archive.ubuntu.com/ubuntu/poo...013-2_i386.deb
http://mirror2.openwrt.org/sources/b...0.10.5.tar.bz2
I have all the files now so what do I need to do to install firmware-b43-installer?
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Mar 29, 2010
I noticed today my dropbox wouldn't connect, so I reinstalled, still nothing. Tried to reinstall from the repo, nothing. While doing this I noticed that apt cannot check repos, or synaptic. Browsers have no issue but it looks like the system itself does. Same goes for Ubuntu update manager and software center.
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Apr 25, 2011
I would like to share my internet connectivity on eth0 with another computer on eth1.
+-----------+ +-----------+ +-----------+
| | | | | |
|ADSL Router|-------------| Computer |-------------|NFS Client |
| | eth0| |eth1 | |
| | dhcp| |static | |
+-----------+ +-----------+ +-----------+
How can i maintain this network topology and allow internet connectivity with dns across my main computer?
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Sep 9, 2009
I have a problem on internet connectivity. Let me explain. I'm using webkit for the browser, and when I try to connect to google, it does not connect. But if I use the ip address of this, 209.85.129.147, everything works. First of I had a suspicion from DNS but it seems ok. Because when I try to ping google, it is working again. I'm using an embedded linux, this problem on a MIPS platform, not PC. But I think there should be some settings onto webkit and this should be same with PC platform.
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Jan 12, 2011
Just installed Ubuntu 10.10 on dual boot computer. Each OS is on separate hard drive with GNOME selection between Ubuntu and Windows 7 Ultimate. Firefox was working fine yesterday when I went to use today, nothing. Email through Thunderbird is down as well.
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Feb 17, 2009
I'm using Linux Mandrake 9.0 on my Dell 750MHz laptop. Linux is not making a dial-up connection, but modem test showed passed. Is there any utility to fix this problem. I have to often use dial-up connection.
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