Ubuntu does not connect to the net

[techtata]

Hi, I have cable internet connection. The grey cable goest directly into my pc. There is no modem or router etc that I use. I have got another pc with Ubuntu 10.10 installed on it but it does not connect to the internet, while the old pc with Ubuntu and Windows XP (it is a dual boot system) does. What could be the prolem? The pc is ok and just like new. Is it MAC binding or something? Thanks.

 

[Sahyadri]

By grey cable do you mean CAT-5 cable ? Does it go to your Ethernet port (LAN Port)?If yes then it surely is MAC binding.

 

[techtata]

Thanks Shayandri, it is indeed MAC binding as confirmed by my ISP after so many days of enquiry.

 

[solariiknight]

MAC binding? interesting.. no modem and router means that internet is shared directly from ISP's routers?

 

[techtata]

I have found the solution here. Not sure if it is the right thing to do, but it works for me any way.

I fixed the issue by modifying the /etc/NetworkManager/nm-system-settings.conf file where I changed managed=true
and it started wotking since then.

http://ubuntuforums.org/showthread.php?t=1729339

Thanks.