Re: multiXnest

[Ander C. de O. <ac...@in...>]

Helge Hafting wrote:
> Ander Conselvan de Oliveira wrote: 
>> Helge Hafting wrote:
> 
> Well, ordinary x.org (from debian and several others) is capable of
> using several pointers and keyboards.  (One pointer+kbd per seat.)
> That's why I asked - I already run such a setup. :-)
That's the point. The x.org was modified to allow multiseat. But this is 
a hack. The whole thing is made so that just one instance of the server 
is controlling all the hardware. The right way to do it, would be 
implement something like RAC into the kernel.

>> A module called RAC (Resource Access Control) prevents conflicts 
>> beetween the video cards, allowing a server with several cards from 
>> different manufacturers to be used.
> 
> 
> Now this may be interesting, plain xorg sometimes struggle with this.
> I.e. restarting one of my xorg servers blanks the other display, so I
> have to resize it (ctrl+keyboad+) to get it back.  Easy for me, confuses
> my users.  RAC avoids such problems?
Yes. But to take advantage of RAC, you have to run an X server with 
Xinerama. And, on top of that X server, run multiXnest.


> Can all of the users use accelerated 3D at the same time too, like they can
> with a xorg setup?  (Well, with some xorg setups - not all cards will
> cooperate nicely. But some do. Children tend to want to play the same
> game, so a setup where not _all_ heads have the same fetures won't do.)
Xnest lacks accelerated 3d support. I guess it could be implemented though.

Ander