I'm at home right now, then I can't try, but between my mail and now, I
tried some xorg.conf modifications, and there's a thing I just can't get,
it's how to give to each GPU a display number when there's no screen, in the
xorg.conf ? Because at boot, if xorg doesn't find any plugged screen, he
will just don't give a display number to the GPU, no ?
Thanks and sorry if it's annoying :(
Philippe.
On Wed, May 4, 2011 at 8:56 PM, DRC <dcomman...@users.sourceforge.net>wrote:
> Example of a multi-card xorg.conf:
>
>
> http://www.mail-archive.com/virtualgl-users@lists.sourceforge.net/msg00335.html
>
> How to run headless:
>
> http://comments.gmane.org/gmane.comp.video.opengl.virtualgl.user/477
>
>
> On 5/4/11 6:09 AM, Philippe wrote:
> > Hello,
> > I've got two questions without answer, maybe because I don't found it in
> > the documentation, or maybe because I just don't understand it in the
> doc.
> >
> > First, I'm trying to use VirtualGL on a server without plugging a screen
> > on the graphic card.
> > I already configured vgl with vglserver_config, and with this, I'm able
> > to use VGL without the need to open a session before.
> > But if I try with no screen plugged on the graphic card, I just get the
> > classical "[VGL] ERROR: Could not open display :0." (same with xdpyinfo
> > -display :0 ).
> > So how can I be able to use the capabilities of VGL without screen ?
> >
> >
> > The other question is related to the use of multiple GPUs with Xinerama.
> > The VGL doc says :
> > VirtualGL can redirect the OpenGL commands from a 3D application to any
> > 3D graphics card in the server machine. In order for this to work,
> > however, all of the 3D graphics cards must be attached to different
> > screens on the same X server using Xinerama. They can then be
> > individually addressed by setting |VGL_DISPLAY| to (or
> > invoking |vglrun -d| with) |:0.0|, |:0.1|, |:0.2|, etc.
> >
> > So, I want to do this, obviously without any plugged screen, and then I
> > need xinerama to create/attach the displays I suppose.
> > How to do this then ?
> >
> > Thanks for answers guys, and don't hesitate to request more informations
> !
> >
> > Have a nice day.
> >
> > Philippe.
> >
> >
> >
> >
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