Re: G550DH + G450DH Framebuffer succes & directfb question.

[Petr V. <VAN...@vc...>]

On 19 May 04 at 13:40, Svetoslav Slavtchev wrote:
> > On 19 May 04 at 13:16, Svetoslav Slavtchev wrote:
> > > 
> > > and it would be nicer to not need matroxset in order
> > > to get two independant fbcon on G550
> > 
> > It would need sensing card outputs to find which outputs have connected
> > monitor and which do not, and as there is no doc...
> >  
> 
> isn't it possible to simply assume that both outputs
> have connected monitors ?
> or does the driver need to retrive monitor data,
> in order to setup properly ?

Problem is that "analog" (HD15) output on G550 is actually
secondary output. So you have to do:

nothing on DVI/nothing on HD15:        anything -> primary output,
                                       anything -> secondary output,
                                       anything -> DVI output,
nothing on DVI/monitor on HD15:        anything -> primary output,
                                       CRTC1 -> secondary output,
                                       anything -> DVI output,
analog monitor on DVI/nothing on HD15: CRTC1 -> primary output,
                                       anything -> secondary output,
                                       anything -> DVI output,
digital monitor on DVI/nothing on HD15:anything -> primary output,
                                       anything -> secondary output,
                                       CRTC1 -> DVI output,
analog monitor on DVI/monitor on HD15: CRTC1 -> primary output
                                       CRTC2 -> secondary output
                                       anything -> DVI output,
digital monitor on DVI/monitor on HD15:anything -> primary output,
                                       CRTC2 -> secondary output,
                                       CRTC1 -> DVI output,


As you can see, you can put CRTC2 to the secondary output only if
monitors are connected to both outputs (or at least if primary output
has monitor connected). If you'll put CRTC2 on secondary output
unconditionally, you do not support (only) analog monitor connected
to analog G550 output...

Moreover, user may want CRTC2 on primary output and CRTC1 on secondary
(if his first monitor is analog one). And you cannot make this
config default too, as it would not work with TV-Out: user would
have primary display on TV then, and it is probably not what user
had in the mind.

So I still think that CRTC1 on all three outputs is configuration
which satisfies most of the users.
                                                Petr Vandrovec