Ubuntu Networking :: Wired Network Stopped Working / Wireless OK
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...
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
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...
I'm new to Ubuntu - I've decided to give Ubuntu Studio a go as an alternative to Windows. However, after installing it, neither of my network cards work. I have a Intel Pro Wireless 3945ABG wireless card, and a Broadcom Netlink Gigabit Wired card. Neither work, And I'm not sure how to. I've tried searching, and have come up with the .tgz file here, but I have no idea what to do with it I'm concentrating on the wireless card for the moment, seeing as that will be the main one I use.
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 :
I'm running Lucid 10.04 on a Dell Studio 15. I first noticed it today, but it could have been happening for a couple of days. I get no IP address for my wired connection when running ifconfig. Wireless is connecting perfectly. Normally when I start up both wired and wireless connect and get a local IP address like 192.168.1.11*. Additionally, the router has a slowly blinking light corresponding to this connection, which is different from other good connections like my printer which has a solid light on. Here is output from running route -n:
Code: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.1.0 0.0.0.0 255.255.255.0 U 2 0 0 wlan0 169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlan0 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 wlan0
I'm running 10.10 on a brand new computer, and up until this afternoon the wired connection was working fine. All of a sudden it stopped working (and doesn't work in Windows either).I ran sudo dhclient and it gave me:
DHCPDISCOVER on eht- to 255.255.255.255 port 67 interval 3 (7, 9, 10, 18, 13) No DHCPOFFERS RECEIVED No working leases in persistent database sleeping
I had shut down my laptop at work last week and when I booted it up the wired internet connect was not working.The wireless connection is working (I'm typing now via wireless).I have WinXP Pro on this machine (but I've never used it--I'm all Linux now). So I booted into WinXP and turned off the wireless and got internet connection through the ethernet cable, so it doesn't seem to be the cable or my ethernet card.Here is the output of "ifconfig"
Code: eth0 Link encap:Ethernet HWaddr 00:1c:25:7a:fa:b6 inet addr:xxx.xxx.xxx.xx Bcast:xxx.xxx.xxx.xxx Mask:255.255.255.0
I have been running Natty on my MacBook Pro for a while now and then suddenly while just using it normally (not installing etc), my skype crashed and would crash again on restart of the program. Now this could be a red herring, but though I'd include as much info as pos.
I installed all the updates the system told me to, to see if this would help and restarted.
On restart, the wired network would not connect. I get the following errors in my log:
May 26 12:46:40 richard-MacBookPro NetworkManager[763]: <info> Saved default wired connection 'Auto eth0' to persistent storage May 26 12:46:41 richard-MacBookPro NetworkManager[763]: keyfile: updating /etc/NetworkManager/system-connections/Auto eth0 May 26 12:46:41 richard-MacBookPro NetworkManager[763]: Ifupdown: get unmanaged devices count: 0
[Code]....
ipconfig does not exist on my computer, otherwise I would echo this for you also.
My ubuntu karma desktop is plugged into a wired connection that goes through a router and into my cable modem.Everything was working fine like it had been foseveral months yesterday morningSomething happened by the end of the day that has screwed up my wired networking. I plugged my laptop into the same cable thats plugged into my ubuntu, and the cat5 cable is live. Also when I plug said cable into the ubuntu box, the ethernet lights come on, or atleast a solid green one. Meanwhile the network connections Icon continues to have a red X and a tooltip saying "No network connection".
Under network settings, there is only one wired network "Auto eth0", but it says "last used: never" which is strange since I've been using this for months. When I click edit the main settings are MTU automatic, ipv4 automatic DHCP, and ipv6 ignore.hat could the problem be? By chance did a karma update get released that broke the networking
Wired and wireless networking have been working flawlessly for years on my HP Compaq 6710b laptop. Several weeks ago, after an automatic update via the update manager, my wired network stopped working. I did not notice it directly, since my wireless connection took it over. I only noticed it when I had to work in an office where I didn't know the wireless password.Since then, I have been trying several things and searched several forums. It is hard to find any troubleshooting information about wired networking, as most of the problems seem to occur with wireless.
I did verify that there is no hardware problem. My laptop is dual boot and when I boot the other operating system, the wired network works without problems (as does the wireless.)My Ubuntu version is Ubuntu 10.04.1 LTS. My kernel version is 2.6.32-25-generic i686. I hope anybody can help me getting my wired network working again.
I can not get my network to work.Wireless shows no networks at all and wired the ethernet light does not even turn on. I have dpne heaps of searching but i can not seem to find a solution.
I can connect to the internet with wired connection. The switch for the device is on but this command "sudo lshw -C network" has the following results:
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.
I have Ubuntu 9.10 installed on a VM Server 2.02 with a Win7 32 bit host. When the host is wired into my network, the Guest (Ubuntu) has internet conductivity. However when the host is connected via Wireless, the Guest Does not have any internet connectivity. The VM Network connection is set to Bridged.
I dualboot Win7 and Ubuntu 10.04 for quite a long time now with no problems.... but now wireless works perfect on Win7, but I can't even connect Ubuntu with a direct wired connection.... ubuntu connects to the actual Linksys Wireless router just fine, but just won't take the internet, and I've tried two different Wireless cards.this all started (I dunno if its relevant or not) when I put in a new TV tuner, which I obviously took out right away. But the problem is still there. I don't think its the card, I'm pretty sure its just some kind of setting that I've messed up or something because when I connect to the network its near 100%.
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?
Everything seems to be fine while she is connected via Wireless. When she plugs in the wired connection a problem occurs, it seems that every SSL Site and/or encrypted Website cannot be shown on her Notebook, for example shopping at Amazon.com. The Problem does not persist the whole time, sometimes it works for a few seconds and you are able to fill your cart.
Other Informations: The Connection has been tested with Windows 7 and with Ubuntu (USB-Live-Stick Lucid)... no difference.
Is it possible that her Hardware is not running correctly? What should we do next?
Tomorrow we want to reset the computer to factory default status.
Are there any possibilities of testing a SSL Connection using the Terminal?
I'm running Windows 7 and Xubuntu 10.10 on a dell pc. My wireless works fine when I run windows 7, but on Xubuntu, the wireless doesn't even come as an option. When I try to plug in the wired connection, it loads for about a minute then tells me I'm disconnect. The option for the wired connection is there, but when I try to click it, the same thing happens. What do I do?
I just installed (dual-boot with Vista) Ubuntu 9.10 in my Toshiba Satellite M300. The problem is that (when using Ubuntu 9.10), its network is dead, both wireless and wired. The LEDs of the LAN port don't even blink. My wifi is not also detected. Both of my wifi device and LAN port are functional when using Vista.
The reason for this is I can connect to the internet on my ps3 through my laptop, and I can stream from my laptop to ps3 through wired connection. This works fine in windows 7 all I had to do was right click bridge connections. As I dual boot I don't want to have to make any changes to the settings on the ps3.
My interfaces are: eth0 - wired wlan0 - wireless
I installed bridge-utils and created a bridge and added both eth0 and wlan0 to it. However I could not get it to work. I have also tried internet sharing through network manager and firestarter.
I have just installed Ubuntu 10.04 on an HP Pavilion dv6000 series laptop, dual-boot. Everything is working except the networking. It can see wireless networks, and when I type in the password for my wireless network, it tries to connect, then asks for the password again. When I plug in the Ethernet cable, again it tries to connect, but after a few seconds gives up and tells me I am now offline.
I recently upgraded to 10.04 and now my wired network no longer works. I am unsure if it worked at all since the upgrade as that computer is rarely used, but it was definitely working prior to the upgrade. It is some sort of Realtec card, I believe. Does anyone have any suggestions? I'm running 32 bit 10.04 on a 2 GHz P4.
I use Ubuntu 10.04. Last night, I installed the most recent updates for this istribution, and before I shut off my laptop, my internet was working smoothly. However, today my Internet connection is behaving very strange. When I try to connect to the internet, my browser times out or cannot establish a connection. I'm able to connect to low-input sites like Google search, but I cannot connect to sites like Facebook, Wikipedia, or even the Ubuntu forums (I'm currently using a friend's laptop to post this). Pidgin and Skype work without a problem, as well as Transmission. I primarily use Firefox, but I also tried Chrome, Opera, and Epiphany; none of them worked. Oddly enough, my update manager also cannot connect to the Internet to retrieve updates.
I have restarted my router, but it still works properly, as it is running fine on my friend's laptop. I have tried 'no proxy' in Firefox, but it did not help. I also disabled IPv6 in etc/sysctl.conf by adding the code:
I have a laptop Acer aspire 5100. I installed Ubuntu a while ago and it was working well. Last week I updated it using Update manager and ever since I haven't been able to connect either wireless or wired connection.
I posted here a couple weeks ago about my wireless issues and someone suggested I download an update of firmware for my Broadcom wireless card. The problem is I can't even connect to the Internet with a wired/Auto Ethernet connection in order to download said firmware. I tried downloading it on a different computer then using a flash drive to transfer it, but when I opened it on my computer, a message popped up saying the files were corrupted (this happens every time I try to install any program/update from a flash drive). So I tried today to use the wired connection to download the firmware but a) it wouldn't recognize the connection, so I deleted the AutoEthernet connection, rebooted, and activated the new one, as per the solution I'd read in a different thread on the forums. The wired connection worked, but only intermittently--it disconnects about every minute or so--and even when I'm connected, Firefox won't load any pages so I still can't get the update I need for my card.
I feel like I'm out of options here--I've been having this problem for about 7 months and I, or my much more Linux-savvy acquaintance, have not been able to figure out the problem. I'm thinking the only solution at this point is to go back to running Windows, which I really don't want to have to do.
I am unable to connect to any network, wired or wireless. Network-manager and wicd are both gone, as in no longer installed. Please don't tell me to apt-get anything. I have no network connection. I have tried downloading packages for nm onto a usb stick only to find myself in dependency hell which ended with the impassible error "Requires installation of untrusted packages".
I'm using Archlinux with NetworkManager to connect to the internet. When I'm in my room, I've an ethernet cable and still receive the wireless signal.Sometimes (like when we have a power cut, somebody is rebooting the router or simply something wrong with the provider), I'm disconnected during a few seconds, NetworkManager ask me again the password of the wireless (even if it remembers it), and then I'm ok.But when I'm not in front of my computer, while I haven't push the button "ok", it doesn't connect, even with the wired connection.That's not very normal in my opinion as there is supposed to have two different and independent connection. No ?
I intent to install an ssh server on my computer but if I cannot access it every time there is a problem that won't be very useful.
