[ltp] xorg.conf file for T42p?

Alex Deucher linux-thinkpad@linux-thinkpad.org
Sat, 4 Dec 2004 13:57:29 -0500


On Sat, 04 Dec 2004 11:12:35 -0500, Donald B. Altman
<dona@singulartech.com> wrote:
> ** Reply to message from morpheus <morpheus@post.harvard.edu> on Wed, 01 Dec 2004 22:28:28 -0500
> 
> Hi There,
> 
> I'm not an expert with X, so this is only a guess - more like brainstorming.
> 
> How about if you give it a videocard 1, which is also the radeon.  Then you could bind videocard0
> and monitor 0 to screen0 and monitor1 and videocard1 to screen1.
> 
> But, I don't believe that the radeon chip can simultaneously display different resolutions
> on internal and external, so I don't know if this would work.
> 

most modern GPUs have two display controllers but only one drawing
engine.  They way xfree86/xorg handles multiple head chips is to load
the driver twice, once for each head.  then in the code are multiple
paths, one to handle each head.  each display controller can run at
its own mode and refresh.

Alex

> Good luck.
> 
> Don A
> 
> --
> Donald B. Altman
> Singular Technologies
> Croton-on-Hudson,  NY