Using Ubuntu and having problem with my network.
I have a Netcomm NB5580W ADSL modem/ethernet switch device.
When I boot my computer up, one of the LAN lights illuminates on the ethernet switch. Linux begins to boot then before the login screen appears, the LAN light extinguishes.
If I shut down computer down, the ethernet port light comes back on.
So now I am wondering what step of the boot up process is causing the network to stop working.
Looks like some sort of network problem, what commands can be used to gather clues?