[ILUG] Extended Desktop in Ubuntu

[Michael Watterson]

motoole at tegral.com wrote:
>>> Is your problem getting both screens to work (the xorg setup) or is it
>>> the extended desktop, you've got trouble with ?
>>>       
>
> No both monitors are cloning OK but it's trying to get the monitor to span
> across both screens that I'm having problems with.
>
> It works when using Windows with a VGA splitter but I can't get this
> working in Ubuntu. I've backed up xorg.conf and have had to restore it many
> times because of this.
>
>   
It's not a VGA splitter you have but a special connector for a Graphics 
card with two outputs on one connector.  An actual  "VGA splitter" is  
cable to feed one VGA output identically to two monitors.

This sentence  doesn't make  sense:
"No both monitors are cloning OK but it's trying to get the monitor to 
span across both screens that I'm having problems with."

Desktops can span two graphic card outputs thus two screens/monitors. 
"Monitor spanning screen" makes no sense.

If both screens (Monitors) have identical images, I'd suspect a single 
graphics output and a "VGA splitter" (hardware clone). But it you say 
your cable adaptor lets you have a larger desktop spanning two monitors 
(screens) then it's not a "VGA splitter" and you need to configure two 
graphics devices in Linux as if you had two identical separate Graphics 
cards. Which from connection signal & Software logic, it has to be two 
graphics adaptors to get differing images on each screen.





-- 
Mike