Net connection trouble: "No Ethernet cable connected or the device is not responding"
Hello
I have been plagued by a dropping Net connection for a couple of months, and as it has been getting worse lately I have tried to sort out the problem.
I have simplyfied my connection between the computers and the VSDL fiber modem by bypassing my AirPort Express and Ethernet hub and connecting the three computers directly to the built in ports on the modem.
Since I did that a new error message has started appearing on my Mac Mini, saying that I have no Ethernet cable connected to the modem, or the device is not responding. At the moment I have two of the machines connected, and the Mac Book Air seems to work without problems. There are lights on the Ethernet ports on the modem, and they are lighting up for the iBook even when the Mac Mini connection drops. When the Mac Mini connection drops the lights go off on its Ethernet port on the modem.
This seems to point to some sort of trouble with the Mac Mini. Is there a way to monitor what's going on? Can I use Terminal, for instace? It can't be the settings, and it cant' be the cable, so it must be related to the hardware I suppose. I am using DHCP to connect to the modem.
The connection drops arbitrarily, sometimes for long periods of time, and then comes back up again by itself.
Any ideas for trouble shooting etc?
Best
Hans Karlsson