Re: G550DH + G450DH output selection patch for testing

[Helge H. <hel...@ai...>]

On Fri, May 21, 2004 at 01:29:24PM +0200, Petr Vandrovec wrote:
> On 21 May 04 at 12:18, Helge Hafting wrote:
> 
> > Still, it'd be nice to have an option (specified on the kernel command
> > line or the module.conf file) that allows overriding this.
> > 
> > Something like matrox:outputs:xyz
> > x, y, and z can be 1, 2 or 0, in order to connect CRTC1, CRTC2 or nothing.
> > The first position(x) then correspond to the primary output, the second(y)
> > the secondary output, and the third(z) DVI.
> > 
> > The default then, when not sepcified, would be matrox:outputs:111
> > which is your default with CRTC1 everywhere.
> 
> Yes. It looks reasonable.
> 
> > Are you interested in supporting such an option?  I can try to make a
> > patch myself if you aren't interested in developing it yourself.
> 
> I started working on it, but then I made 'bk pull' and found that
> fbcon changed a bit and that I have to adapt my infrastructure to get
> it back to work (as with stock fbcon I cannot drive my system in a
> way I want :-( ).

Here is a patch that works for my G550. 
It probably needs some polishing, and more work in order to
work with other cards than G550 / G450. It is meant for testing by anybody
interested.

Still, it works on my G550, the kernel parameter video=matrox:outputs:21
connects CRTC2 to the first plug and CRTC1 to the second plug.
outputs:11 is the default if the parameter is omitted.


The first position is the first plug, the second position is
the second plug. I didn't figure out any third output.

Specifying 0 connects nothing to that plug.
Specifying 1 connects CRTC1, and 2 connects CRTC2. Other values
won't work and the default of 1 will be used instead.

Helge Hafting