I'm asking this again because I found this in your site in a related question:
"This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, see the FAQ." Like saying: hey, you are the only one, in the middle of nowhere, and neutrinos were moving faster than light, it's unlikely to happen ever again.
Sounds like nobody could solve it, Canonical got mad and sent everyone to hell...
The solution given once was:
"Solved by installing both of these:
http://intellinuxgraphics.org/2011Q1.html
http://ubuntuforums.org/showpost.php?p=11223913&postcount=16
I don't know which of them actually solved the problem - just installed both, rebooted, and it worked."
This reminds me to Windows...
Can you help me community? Is it possible to use a 1600x900 screen resolution in Ubuntu 12.10?