Dual Head Support on Neomagic driver?

[Alex Deucher]

On Fri, 11 Feb 2005 11:14:07 -0800, Nicholas Cullingham
<ncullingham at gmail.com> wrote:
> I have an older laptop running mandrake 10.1, the distro includes 6.7.0.
> 
> I spent most of yesterday trying to track how to set up dual head support for
> the laptop.  I found a number of documents on how to set up the xorg.conf
> file, including the parts about making more than one "monitor" "device" and
> "screen" sections.  The card I'm using is the MagicMedia 256AV (NM2200), and
> has wonderful support for the single builtin display, and I have no problems
> with the clone display for an external monitor.
> 
> So now, after reading pretty much everything I could find, I looked more
> carefully at the neomagic driver man page (perhaps I should have done that
> earlier) at http://www.x.org/X11R6.8.2/doc/neomagic.4.html (I know the
> versions don't match up, but the document seems to have never changed
> anyway).  It doesn't specifically say that the dual-head option is supported.
> The card is capable of dual-head, the function currently works in Win98.
> 
> Sorry if this isn't the best place to post. I hope this question is somewhat
> straightforward: Does the neomagic driver allow for dual-head mode?

The xorg and xfree86 neomagic drivers do not have dualhead support. 
Unfortunately there are no databooks available for the neomagic chips
for one to implement the feature.  If you really want dualhead support
your only real choice at this point is to compare register dumps under
windows in single and dualhead modes.

Alex


> 
> Gratefully,
> Nick