Edubuntu 11.10 LTSP installation shuts off other network to internet
I have two network connectors, one on the mainboard and the other in a PCI slot, and have tried LTSP several times both from a live-CD session (actually Edubuntu 11.10 comes on a DVD) and by installing to disk. Both network connections work fine for connecting to the intenet, but as soon as LTSP is tested from the live-CD session the internet shuts off and nm-tool reports that connection -- whether it is eth0 or eth1 -- as unavailable or unmanaged. Same if I install Edubuntu to the hard disk and select LTSP Server as an installation option.
I wonder if this could be related to the computer, Dell Optiplex 755, because using the same PCI card on an older computer I did have LTSP from Edubuntu 8.04 up and running OK.
I have tried switching cables each way and reinstalling, switching cables after installing, every possibility, and the behavior is the same.
For example, if I install LTSP (or test LTSP via live-CD session) with the internet cable on the mainboard connector (eth0) and the gigabit router on the NIC card (eth1), then eth0 does not work, registering a state of unmanaged or unavailable with nm-tool. The internet is cut off. But I can get the internet back by switching the internet cable to eth1, and then nm-tool reports eth1 as connected and eth0 as unmanaged. The same phenomenon occurs in reverse with the two network connectors. I do not want internet and the thin-client network to be on the same network and don't know I would hook it up that way, anyway.
BTW, I have been unable to find an explanation anywhere of the exact meaning of the State reports for nm-tool, the differences among unavailable, unmanaged and unconnected. Unconnected, I guess, means something previously connected but unplugged or something. The other two, however, occur in my nm-tool reports at various times without any seeming logic.
Any possibilities? Thanks for thinking about this...
Last edited by eccampbell; 03-20-2012 at 04:49 AM.