2 dual-head PCIe NVIDIA cards to be one screen

[Alex Deucher]

On 5/2/06, Christian Parpart <trapni at gentoo.org> wrote:
> On Tuesday 02 May 2006 20:09, Jay R. Ashworth wrote:
> > On Tue, May 02, 2006 at 07:01:38PM +0200, Christian Parpart wrote:
> > > Now, our goal is to have a wide screen for X to spread over those 3 TFT
> > > displays using the two PCIe NVIDIA gards (both dual-head, as said).
> > >
> > > However, we encountered several problems in getting X finding the both
> > > cards (Xorg 7.0), so he contacted some users at the #irc channel which
> > > couldn't help much, which is - in fact - why I'm writing here.
> > >
> > > Does anyone of you have any kind of expriences in connecting *more* than
> > > two display devices to X11 and let them serve a desktop?
> > >
> > > Most ideally is, to get then OpenGL running atop of the 3 desktop, in
> > > fullscreen resolution (3*1280x1024 = 3840x1024) to play a game within it.
> >
> > Well, I did this last year on a SuSE 9.0 machine, with what I believe
> > was Xfree, and it Just Worked. The machine took 2 or 3 passes to
> > detect all three graphics cards, but all I had to do was turn on
> > Xinerama (as I recall it, or whatever it was called in the XF days, and
> > the desktop spanned all three cards.
> >
> > I would tentatively have to assume that if that's stopped working,
> > something's Broke.
>
> so is Xinerama also fine with OpenGL - most ideally with NVIDIA cards - too?
> Well, okay, I'gonna push him for given xinerama a trial as soon as we found
> some howtos on getting xinerama working :)

I'm not too familiar with nvidia's driver, but normally xinerama
doesn't work with direct rendering.

Alex

>
> Thanks so far,
> Christian Parpart.
>