Thinkpad t510 xorg fatal error -no screens found

T510

Hi, am encountering a very strange problem with ubuntu 12.04 on a nvidia card based 64 bit laptop. Problem is being described below

 

The machine is dual/ triple boot enabled - wincedows, linux os 1 and linux os2 -swap and a separate /home

it was running linux mint since the first install in 2010 - with no problems (64 bit version). A few days i tried to install ubuntu - i did this on the second partition set aside for a second linux os. This worked fine but it crashed the original install

 

Then i spent 10 hours yesterday trying ti reinstall with various boot flags and also trying to reinstall nvidia drivers and also trying to configure xorg.conf

 

nothing worked, every single time it would install succesfully and when i tried to login it would reach the login screen and after loggin in it would just flash back to the login screen. The xorg error was  Fatal Error "no screens found"

 

Late at night i then decided to do a last install but to not include the /home partition. Voila it worked, i have a system that boots without flags and can access the entire system. and the only change is the the separate /home partition was not identified during the partitioning phase.

 

Of course my next step is going to be to clean the /home of all the DE files back up the data and do yet another clean install with even the separate /home being formatted.

 

Question is what has the fatal screen error got to do with with the /home