@scar Please give the output of lspci and ifconfig of live cd. ---------------------------------------------------------- <a href="http://forums.linuxdesh.com/member.php?action=register&referrer=3%20" target="_blank">Dedicated Linux Forum in Bangladesh</a> <a href="https://twitter.com/#%21/AshickunNoor" target="_blank">Follow Me Twiter</a> Thank you Md Ashickur Rahman <div class="gmail_quote">On Tue, May 31, 2011 at 2:41 PM, Tom H <<a href="mailto:tomh0665@gmail.com">tomh0665@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> <div><div></div><div class="h5">On Mon, May 30, 2011 at 11:48 PM, scar <<a href="mailto:scar@drigon.com">scar@drigon.com</a>> wrote: > > i finally decided to upgrade an old machine from 9.10 to 10.04, and > there is something strange going on with the networking. > > this machine is only connected to my LAN using one ethernet port, and i > also had previously set up a bridge for use with a virtual machine i > have installed, so a rather simple setup but not standard. 犲 just used > the KVM setup guide on <a href="http://ubuntu.com" target="_blank">ubuntu.com</a> somewhere to setup the bridge. > > when the system boots up, it can't be found on the LAN, and it can't > connect to websites either. > > in network manager i have several different connections that i don't > remember having: > > Wired connection 1 > Auto eth0 > Auto Ethernet > ifupdown (eth0) > ifupdown (br0) > > i'm pretty sure 'auto ethernet' was the only one i used before. 犲t > seems after i pick any one of these to connect to, i then have access to > my LAN, but still can't reach any outside websites for example. > > also, when i was running 9.10 my motherboard blew out and i had it > replaced under warranty. 㗖owever, a different model was sent since the > original had been discontinued. 犲 remember something strange happened > with the networking at that time too, but i was able to get it working > with some help from my loco team, and haven't had to fuss with it since. > > it seems to me this chain of events may have really messed up my > networking (this system has been upgraded since 8.10 too). 犲'm > wondering if there is a simple way to wipe the slate clean and get my > LAN and bridge connections configured again... </div></div>The "Auto" connections are created by NM and the "Ifupdown" are created by "/etc/network/interfaces" in conjunction with "managed=true" in "/etc/NetworkManager/nm-system-settings.conf" in the "ifupdown" section. I don't understand how you can have the "Auto" and "Ifupdown" entries simultaneously. What's the output of "nm-tool"? What's your bridge setup/configuration? <div><div></div><div class="h5"> -- ubuntu-users mailing list <a href="mailto:ubuntu-users@lists.ubuntu.com">ubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-users" target="_blank">https://lists.ubuntu.com/mailman/listinfo/ubuntu-users</a> </div></div></blockquote></div>