> > > So, as I already said, I think some kind of serialization of video
> > > device accesses is needed between the multiple X servers.
> >
> > So who would be qualified to attempt such a thing?
> > Who do we have to beg ? :)
>
> Well, I'm still hoping that perhaps some XFree Xpert (this is the
> right mailing list, isn't it?) will either confirm or refute my
> assumptions about the inner working of XFree VGA device access, and
> ideally even provide some advice. Then, I'm willing (and eager) to
> have a try at this mighty task...

It seems my hope is in vain. I will try a more specific question,
then.

What if I force the variable needRAC (or was it need_RAC) to true?
The server would then call xf86EnableAccess(screen_nr) every time
they need access to a video card. However, AFAICS there is no way of
notifying the RAC subsystem of no longer using the card, or is there?
I want to avoid having to change the drivers. Do you think that it
would be sufficient to guarantee free access to the video card for,
say, 1 second after the return from xf86EnableAccess(), and then
allowing the other running X servers to gain access?

Vaclav Dvorak   [EMAIL PROTECTED]
IDAS, s.r.o.    http://www.idas.cz
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