Ubuntu Networking :: Ethernet Ports Not Working On Fresh Build
Feb 27, 2011
I had 2 Ethernet ports and neither of them were working on a fresh build a friend was struggling with. After reading the suggestions to fix the issue and thinking that there had to be an easier way I had an epiphany. I would go to my spare parts box and bring out my old Netgear GA311 and pop it into the slot. So after searching for 10 minutes I found it and installed it. Booted up the rig and it found that right away (SWEET) now that's not the fix anybody can do that, once I updated Ubuntu the on-board ports started working (that's what I'm using now). I can't explain what the update did but for a few bucks a used card in the tool box might not be a bad idea!
Mother board is a Gigabyte GAX58A-UD5 Rev.1 Personally I'm an ASUS guy.
Yesterday I switched from CentOS to Ubuntu, and wanted to install TeamSpeak3 which runs on ports 9987 UDP and 10011 TCP. The TeamSpeak3 worked fine on CentOS before this.
I believe the only firewall for Ubuntu is "UFW", am I correct? If so, "ufw status" reports:
Code: Status: inactive
I do have other things running on UDP (Counter Strike Source servers) and people can connect just fine.
When I telnet localhost 10011 I get a response from the TeamSpeak3 server:
Code: Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. TS3
Welcome to the TeamSpeak 3 ServerQuery interface, type "help" for a list of commands and "help <command>" for information on a specific command. However, telnetting from outside just gets no answer, this is what leads me to believe it is a firewall in the way.
My first one is the network: Our routers' ethernet ports are all in use and I cant get one of them. So Im asking you what I need to buy. Our router now is a speedport w701v. The new router should have wlan and good working LAN. It shouldnt be very expensive... give me some tips what I should look for (because Im very new with router...) and maybe give me a link where they tested many routers (and where I can trust the results).
I have a system with one (sometimes two) ethernet ports, that works happily in an old Fedora 5 build. But I can't get it to work on a new Centos 5.4 build. Original system: One dedicated ethernet port on card always connected to the systems dedicated equipment and no external access (the system is the DHCP master for that network). An optional second USB dongle that is a second ethernet port, used for debugging and development. (This is a DHCP client with full conectivity. In /etc/sysconfig/network-scripts I have ifcfg-eth0, ifcfg-eth1 and a route-eth0. Neither of the ifcfg files needs an explicit HWADDR, which means the same ones work for all boxes. And when one needs to be connected to the network all is fine.
The system is being moved to Centos 5.4, most is working with minimal change, but I am having problems with the ethernet ports. If it only has the on board ethernet connected, all is fine. If you have the USB dongle connected things go wrong: This system brings up the USB ethernet first, and tries to assign it to eth0 (which fails), and then brings up the on board ethernet as eth1 (which also fails). I have tried forcing the behaviour of the network by setting the HWADDR(s), but this does not result in the on board coming up as eth0, it comes up as __tmpxxxx as follows:
Currently the only solution is to unplug the USB dongle through restart and plug in afterwards, and this wont work when the unit is remote and in the field.
Just recently got a new rig, and was wondering, is there a way to share internet via a switch. I understand the problems with switches is that they dont assign IPs like routers do, but if my ubuntu machine worked like a router by assigning IPs, could it work? Current setup is as such. I have one ubuntu machine with 1 ethernet port (this shall be the main preferably) 1 mac with a single ethernet port 1 modem with a single ethernet port that cannot assign more than one IP address. And a 5 port switch. Would it be possible to place the modem into the switch, get the ubuntu machine to receive the IP address, and broadcast all other address' to everyone else via the same switch and ethernet cable?
I have 2 (some future machines will have 4) ethernet ports. I want to have them configured such that if any gets unplugged, as long as at least one of them is plugged in, it can reach the network (even if via a different IP address), and it can be reached (at least when trying a working IP address). I tried this for /etc/network/interfaces:
Code: auto lo iface lo inet loopback auto eth0 iface eth0 inet static
I'm currently using Ubuntu 9.1, and a motherboard which has two Ethernet ports on it.
What I would like to do is bridge these ports, so I can plug in another Ethernet cable and run it to an unmanaged switch in my room (handy for my work laptop when on-call and building other PCs, etc).
I.e. Router --> 8-Port Switch --> My PC. Eth 0 --> 192.168.1.100 static Eth 1 --> 5-Port Switch --> DHCP
I believe this is the config to make the ports bridged:
I have no "enable wireless" option from network manager. I successfully installed the 8172 driver, however upon enabling it causes a system freeze, and I'm forced to use the reset button. I have no clue how to proceed from here. Data that might be of use from the "how to post" thread:lsusb Bus 002 Device 002: ID 0bda:8172 Realtek Semiconductor Corp. RTL8191S WLAN Adapter
I have installed ubuntu, xubuntu on this laptop with usb drives and even net install wont work. Once the os gets installed i see no indication that the ethernet is even there...
I've installed a fresh copy of the latest 10.04 distro, lucid lynx and have problems connecting to the machine via ssh because the ports are all blocked (using nmap to check). In past releases, changing the gdm.conf flag "TCPDISALLOW" from true to false would fix this. In the new /etc/gdm/gdm.schemas, I've tried making a similar change, but it's still not opening things up. I've downloaded gufw and have made sure the firewall is off. So, I'm not sure what to try next.
I just installed ubuntu 10 on my pc and unfortunatly I don't have internet. I only have one pc wired to my 2wire modem. I want to use dhcp, no static ip if possible.
I've had an issue in KDE where each time I restart my computer, I get 5-7 notifications that it wasn't able to connect to my ethernet port. (Or something close to that) I think it's trying to connect to my marvell port over and over. Has this happened with anyone else? I think I remember this happening with Ubuntu as well only it only tried to connect to that port once and then stopped trying.
Never done it before, don't know how but its due next week. I am a computer systems student and have been required to built a hardware that will be operated by a program in G++ through the parallel ports. The hardware, thats a piece of cake, the software, now that's were the real problem is. I don't even know were to start.
lspci reports 07:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8056 PCI-E Gigabit Ethernet Controller (rev 12) 08:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8056 PCI-E Gigabit Ethernet Controller (rev 12) eth0 is picked up (light when I plug n the cable lights up). nothing for eth1.
other OSes on the same machine pick up both. My /etc/network/interfaces file looks like auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp iface eth1 inet static
[Code]...
For those who are interested, I have an adsl modem and a router is connected to the modem. eth1 is a connection to the modem. eth0 to the router.
After a fresh install of Ubuntu 11.04 (from 10.04) and spending several hours trying to figure out why the ad-hoc connection between my two computers (Fedora14 <-> Ubuntu 11.04) no longer worked - it had worked fine for almost 2 years with 10.04 - I've finally concluded it was a DHCP problem. This realisation (which was slow in coming!) dawned on me when I reversed my setup and configured the Fedora box as the DHCP server and everything was suddenly working perfectly! A quick internet search threw up an installation file called "isc-dhcp-server" which other Ubuntu 11.04 - related forums are also complaining about. My problem is that this file, although available in the repository, is not even installed!!!
It seems unlikely that the developers forgot to include DHCP support, so I hope someone can point me in the right direction.
I need to ask about Virtual Interface, as I need to use my ethernet interface to act as two ethernet ports. As I need to give eth0 an IP address and give eth0.5 another ip address, and make some natting and other issues. Can I do that with the same interface?
I'm running Ubuntu 10.10 - 2.6.35-28-generic-pae i686 on a home build machine. The wireless has not been working for several months but I "duck taped" the problem by connecting my eee to my machine and using the internet that way. I'm finally getting to fixing the issue but I can't seem to figure out what the issue is. I think there might be a driver conflict because the wireless was detecting networks last night, but inconsistently - they would appear and then leave. Also, the green light on the wireless card does not work. Here is all the information I could provide:
Just tried new Fedora 11 yesterday, did a fresh install with ext3 /boot and ext4 file system, booting looks great, but wireless doesn't work. I have tried using broadcom-wl, dnmouse script, dnmouse broadcom f11 rpm, fwcutter but not ndiswrapper
Code: # lspci -vvv | grep 4312 02:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g (rev 01) Subsystem: Hewlett-Packard Company BCM4312 802.11b/g Wireless LAN Controller ifconfig only shows eth0, lo and pan0 interfaces, and got nothing from iwconfig...
Code: # iwconfig lo no wireless extensions. eth0 no wireless extensions. pan0 no wireless extensions.
Even tried to blacklist b43 after installing broadcom-wl driver, but no luck. Broadcom-wl works fine with Fedora 10 on my laptop, is it possibly because of the new ext4 file system? Should I try ndiswrapper or install Fedora 10 again and do a preupgrade? I also use fedora at work.
I did a fresh install of Ubuntu 10.10, coming from 10.04 and the wired network connection sometimes works, and sometimes doesn't. Right now I manually removed current network from System-->Preferences--> network connections, define a new one, and reboot. This usually fixes, although I've had to do this two times in the past.
Other general info Ubuntu 10.10 64bit, EVGA P55 motherboard, on board either net.
I'm having a strange problem with my ethernet card. In previous installs of 10.10 on this same computer, I've never had any trouble with either my wireless or my wired internet. However, after messing around with some other distros, I recently did a fresh install of 10.10 on this computer, and now only wireless internet is working. When I plug in an ethernet cable, I do not get connected.
One difference between this install and the previous installs is that, previously, I had always installed while connected to the internet via ethernet. This time I did it while connected wirelessly. I've tried methods from other threads, but I've had no luck. In particular, I have trouble "make install"ing the official Atheros driver, and I've installed the compat-wireless driver atl1c, but I'm still not getting a connection.
Here is the relevant output of lspci -vv: Code: 03:00.0 Ethernet controller: Atheros Communications AR8152 v1.1 Fast Ethernet (rev c1) Subsystem: Lenovo Device 396b Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 45 Region 0: Memory at d2000000 (64-bit, non-prefetchable) [size=256K] Region 2: I/O ports at 6000 [size=128] Capabilities: <access denied> Kernel driver in use: atl1c Kernel modules: atl1c After a reboot, my ethernet is now working. I don't understand, but I'm happy.
When I start my Ubuntu machine, it says "eth0 connection established". But i could not able to ping to other machines available in LAN & also to Internet.
I am trying to setup a VPN on my FC 12 box. Looks like getting openvpn to work behind NAT is as easy as just forwarding the ports. Do I need to forward any specific protocols (GRE, etc)? Also, can I do this with one Ethernet port (IE: RJ-45 jack), or do you recommend a second ethernet port? I could add in another PCI ethernet card if it makes it easier. Anyone know if a single ethernet jack will work or do I need two?
I have a Opensuse 11.4 workstation that has two ethernet ports and I was wondering if there is the chance to use the other ethernet port as a switch to a Mac/PC?
I have put 10.04.1 386, 32bit, on a Toshiba C650 laptop. Took Win 7 off. Install seemed good. The only cd daily I could find was from August 16.I have a cdrom/dvd showing up but not much else. The mousesort of works, acts like it has an irq problem, jumps around and is slow. The touchpad works ok. USB sticks don't show up, nor ethernet card nor wireless card. An lspci shows everything there. Machine won't shutdown and is slow starting but does start
After installing fedora 13(x86_64) in my new acer aspire timelinex 4820T laptop , I have seen that the ethernet is not working. Network manager shows that "no network devices available".
I just installed Ubuntu 9.10 on my HP dv6500, and neither the wireless won't work. I don't see any drivers under System >> Administration >> Hardware Drivers, and I can't connect it to the internet any other way when I'm running Ubuntu. (I still have Vista as a dual-boot, and it works fine there). (Sorry about the title - the ethernet DOES actually work, but I can't seem to change the title of the post).
I have just installed a generic PCI ethernet card into a fairly low powered system (Celeron 766MHZ, 512mb Ram, 40 Gb HDD, Generic sound and video). The card came with no drivers. I have since installed Ubuntu 9.10, and up to a point everything is fine and looks great. However when I connect an ethernet cable up to the PCI card (in the hope of connecting with the Internet), nothing happens. I am thinking that I need Ubuntu drivers for the PCI card ? or does Ubuntu 9.10 come with drivers and I need to go into the 'engine room' to sort it all out ?
