Re: Gnopernicus

[Bill Haneman <bill haneman sun com>]

On Fri, 2002-08-23 at 06:37, Michael Meeks wrote:
> Hi Bill,
> 
> On Thu, 2002-08-22 at 15:42, Bill Haneman wrote:
> > There is however one important missing piece; fullscreen magnification
> > requires two X screens.  This is a problem for most people's Linux
> > setups, for obvious reasons which include limited support for multiple
> > video cards, etc.  Xvfb doesn't do the trick since it doesn't do
> > keyboard events, etc.
> 
> 	XFree86 handles multi-headed video cards just fine - and they're cheap;
> I have a Matrox MGA G400 AGP, which has dual outputs, I don't think
> hardware support is such an issue.

We had lots of trouble actually tracking down cards/drivers that would
work, when we last tried to do this... we were unsuccessful in obtaining
cards that were "known to work"; maybe you have better information?  At
any rate I wasn't directly involved so I don't have better info on the
issues we (Sun folks) found.  But I believe we were looking at
"multi-card" setups and not "multi-head cards".  This sounds like a good
solution if the cards are readily available as you say.

-Bill

> >   Applications (e.g. the normal GNOME desktop) would
> > write to this virtual screen, to which the keyboard and mouse would be
> > connected, and the magnification service (which has a 'reference
> > implementation' in "gnome-mag") would grab pixels from the virtual
> > screen via normal X API and display the magnified result on the physical
> > X screen.
> 
> 	It's an interesting problem; hmm.
> 
> 	Regards,
> 
> 		Michael.
> 
> -- 
>  mmeeks gnu org  <><, Pseudo Engineer, itinerant idiot
> 
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