I am quite sure that I have all the correct, original drivers installed. The ATI Catalyst control center only shows one item in the 'Graphics Adapter' selection window - 1.ATI Mobility Radeon X1400 [Default LCD + Acer AL1916]. I believe if the extended mode were achievable I should see two listings, one for each monitor so I can set all resolutions independently.
In the 'Desktop and Display' window I can see the laptop and external monitors and set up the Clone and Stretch modes. I have an active option for the Extend mode, but selecting it produces no response. I only see the numeral 1 in the accompanying window, I would expect to see 1 and 2.
If I right-click on the desktop and look at Display Properties, the Settings tab says 'Multiple monitors on ATI Mobility Radeon X1400'. The two monitors are not identified separately.
Attached is a pdf document showing the two screens I am trying to explain above.
I am hopelessly suspicious that the ATI card in the T60 computer I am using does not suppor the mode of operation I desire, can someone tell me what the problem is?