T61p and 1920x1080 via VGA?

I have Thinkpad T61p (6457-CT0) with NVIDIA Quadro FX 570M and internal LCD with 1680x1050 running on XP SP3, and now I bought Samsung SM2333HD 23” external LCD monitor with 1920x1080 (HDTV) resolution and I want to use dual view (int. 1680x1050 + ext. 1920x1080). The problem is when I connect ext. monitor via VGA with 1920x1080 - picture on ext. monitor is cropped from left, smaller and positioned beyond borders of visible area. Picture adjustments aren’t helping at all. When I lower resolution to 1680x1050 it is ok, but the image is blurry because it’s not native resolution of ext. monitor, so I don’t want to use it. When I try only ext. monitor with 1920x1080 with disabled internal LCD, there is still the same problem, and on 1680x1050 picture is ok, but blurry. Resolutions higher than 1920x1080 are not possible in Display Properties/Settings/Screen Resolution settings or in NVIDIA Control Panel.
I have borrowed Thinkpad Advanced Mini Dock with VGA and DVI output, and when I use DVI to connect ext. monitor, everything works fine and picture is ok, but via VGA on docking there is the same problem.
I have latest drivers for NVIDIA Quadro FX 570M from Lenovo 6.14.11.7715 (2009-01-08), and latest IBM Presentation Director 4.03 (2009-02-12), but I have also tried with older drivers and Presentation Director, but it’s all the same, only picture is differently cropped, smaller or wider. Also, strange thing is when I, , try to make a new Display Scheme in IBM Presentation Director on internal LCD + ext. monitor via VGA, it offers max. resolution of 1680x1050, which is not the case with DVI.
Just to be sure, I connected T61p via VGA to LG 32” full HD LCD TV, the picture has identical problems, so it’s not up to monitor. I have also tried to connect HP 6710b laptop via VGA to same Samsung SM233HD monitor and there are no problems, it can produce 1920x1080 with clear picture. I have also connected T61p via VGA to Lenovo L220x monitor, and now Display Properties/Settings/Screen Resolution settings (other than 1680x1050) offer 1920x1080 and 1920x1200 resolutions. When I set 1920x1080 the problem is identical, but when I select 1920x1200, picture is ok.
So my conclusion is that T61p is not capable of producing 1920x1080 via VGA correctly, although it can produce 1680x1050 and 1920x1200. The main difference is that 1680x1050 and 1920x1200 are 16:10, but 1920x1080 is 16:9, so I am guessing that VGA output on T61p has problems with 16:9? Or is there problem with sending analog signal via VGA when it exceeds internal LCD native resolution (1680x1050) only for some resolutions? I have tried searching Internet and forums, but there are no answers. Maybe it is the problem when internal LCD is 16:10 and external monitor via VGA is 16:9 and I use dual view? I think there should be no problems with Quadro FX 570M and I don’t want to buy Thinkpad Advanced Mini Dock just because 1920x1080 only works with my monitor via DVI which is present on casing of T61p (and because it’s firm’s laptop, not mine). Do you have any suggestions what is wrong with graphics adapter, drivers or VGA output or how can I solve it?
Solved!
Go to Solution.

Through NVIDIA Control Panel, which you should have if you installed drivers.. You can get it via Display Properties -> Settings tab -> Advanced button -> Quadro FX 570M tab -> Start the NVIDIA Control Panel.
In NVIDIA Control Panel on the left side in the tree select Display, Manage custom resolutions, select external display on the right and click Create...
In the Custom Resolutions window click on Advanced >> and (in Back-end parameters section) in Timing Standard select Manual. You'll be able to enter (in Advance Refresh Rate Parameters) under Desired refresh rate value from 59.500 to 60.499. I have tried 59.500 and it worked... You can also try to change other settings, if you understand the meaning. There is a Test button in the upper right corner.
Hope it helps...

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Go to Solution.

If the vga looks like this ( minus the blue of course )
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