slides from my talk at DDC

[Dave Airlie]

> >
> > In my original scheme if you owned both heads the valid merged fbmodes
> > would be added to the mode list. You can generate the valid list by
> > knowing the chip capability and the DDC from both of the monitors. If
> > you then set a mergefb mode both monitor would change mode if needed
> > and the CRTC would be adjusted for the new resolution. Set either
> > monitor back to a non-merged mode to cancel.
> 
> Just to make sure I understand where this fits in: lack of this is one of the
> reasons it's so difficult to get laptops working correctly with projectors at
> the moment, right?

Not really, fixing this won't really enable anything on current X but
it will centralise a single modesetting system for X/Xgl/anything else
that appears, along with a memory manager it will allow easier dynamic
 reconfiguration of heads when a projector is plugged in etc..

Dave.