Dual Head Video Card Configuration

[Amichai Rotman]

Hello,

I am running Ubuntu 11.04 with a Dual head (DVI and D-Sub) nVidia GForce
8400GS.

I have a Samsung 932BF (connected to the nVidia through DVI) and to a 26
inch LCD TV with 16:9 ratio, through the D-Sub.

I have the nvidia-settings package installed and I am trying to figure out
the best way to switch my computer output to the TV.

I am currently using TwinView, RightOf or Clone @ 1024x768. Any higher
resolution results in an 'out of range' error - claims the virtual desktop
is too big...

I'd like to edit the xorg.conf file to set the LCD TV as a  separate X
Screen with the correct resolution (1366x768, I think).

1. How do I find out what's the optimal screen resolution for the TV (I've
lost the original documentation).
2. How do I edit the xorg.conf file for what I need. I tried to follow
different guides, but got very confused....

Thanks!

Amichai.
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