T61p Wuxga display refresh rates

Hi!
I suspect that my GNU/Linux installation sets the wrong refresh rates for my 15.4" WUXGA 1920x1200 display. It sets the vertical rate at 50, which seems very low.
I can't seem to find what the correct rates are in the documentation that came with the computer. Does anyone know? If you don't know the horizontal rate, I'm still interested in the vertical rate. What does Vista set? (I removed Vista, so I can't check myself.)
Please help!

Adamaxus -- searching the web I find a lot of such claims. I didn't know this. But I do know from my own experience that vertrefresh has a huge impact on my stationary lcd monitor. Are there different kinds of lcds that behave differently in respect to vertrefresh?
Anyway, I don't have any flicker on my T61p screen. It only bothers me that xorg and nvidia-settings report different refresh rates, and that some GL applications might get the wrong info and slow down because of it.This is one of the explanations floating around the net for slow gl desktops on T61p.
If 50 is the default refresh rate, I would think that xorg is right and nvidia-settings is wrong (it reports 60).

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