Re: NVidia on Compaq presario and video output

On 12/13/07, François Patte <francois.patte@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:
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Lonni J Friedman a écrit :
On 12/12/07, François Patte <francois.patte@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:
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Lonni J Friedman a écrit :

nvidia card gives priority to "CRT", the external display, so, if you
plug an external screen/beamer, the display is on this one by default.
That was the case for the nvidia X driver, however never for the
hardware. And its no longer accurate for the driver. For many
notebooks, the internal DFP is given priority.
Nvidia readme:

<cite>

All mobile NVIDIA chips support TwinView. TwinView on a laptop can be
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>

Sure, but that quote has no relevance to what you were discussing originally.

I just said that when I plug an external monitor (whatever LCD or CRT)
on the VGA plug of my laptop, the display is on this external display
and *not* on the LCD panel of the laptop at boot time and I have to
switch the display (to LCD or LCD+CRT) using the keys (Fn-F5 on
Toshiba). And it is always like this (Toshiba, Dell, Sony). But you
maybe have another meaning for "primary".

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



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.

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