Re: NVidia on Compaq presario and video output

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Lonni J Friedman a écrit :

nvidia card gives priority to "CRT", the external display, so, if you
^^^^^^^^^^ Is this driver?

All mobile NVIDIA chips support TwinView. TwinView on a laptop can be
^^^^^^^^^^^^^ Is this driver?

configured in the same way as on a desktop machine (please refer to
Appendix G); note that in a TwinView configuration using the laptop's
internal flat panel and an external CRT, the CRT is the primary display
device (specify its HorizSync and VertRefresh in the Monitor section of
your X config file) and the flat panel is the secondary display device
(specify its HorizSync andVertRefresh through the SecondMonitorHorizSync
and SecondMonitorVertRefreshoptions).

</cite>

Again, you're confusing hardware behavior & driver behavior. The two
are not necessarily the same.

Your remark is irrelevant! (See above)


I'm not sure where you got this from, but its not true.
Maybe no longer true, if your laptop is new (mine is one year old) and
has a dvi connector. We can read in Nvidia readme:

<cite>

NOTE: anything attached to a 15 pin VGA connector is regarded by the
driver as a CRT. "DFP" should only be used to refer to digital flat
panels connected via a DVI port.

</cite>
Again, that has nothing to do with your original statement. You've
proven that you can read the README, but you apparently don't
understand it very well.
I just wanted to say, using this statement (and it works like this for
me since fc4), that in the xorg.conf file the values put on the line
"CRT" are for the configuration of the external monitor whatever it is,
LCD or CRT or beamer.

And this is incorrect. If the external display is a DFP, its going to
be treated as such. An external display device is not always a CRT.

The external device connected to a VGA port is "considered" (not "is")
as a CRT. You would have to explain why a LCD connected to the VGA port
complain that the freq given for the CRT in xorg.conf are out of range,
if you give wrong values, and works smoothly if you give the correct ones.


- --
François Patte
UFR de mathématiques et informatique
Université Paris Descartes
Tél. +33 (0)1 44 55 35 61
http://www.math-info.univ-paris5.fr/~patte
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