Re: [Dri-users] DRI and Dual-Head

[Alex D. <ale...@gm...>]

On Fri, 12 Nov 2004 16:02:54 +0100, Klaus Reimer <k-...@ai...> wrote:
> Hello,
> 
> Does DRI work with Dual-Head in newer DRI drivers? I'm currently using
> the DRI stuff shipped with Xfree86 4.3.0 (Debian sarge packages) and
> Kernel 2.6.9 and I get this:
> 
> (WW) RADEON(0): Direct Rendering Disabled -- Dual-head configuration is
> not working with DRI at present.
> 
> I tried the current radeon-dripkg snapshot but it segfaults. Before I
> try to solve this segfault problem I want to ask if there IS DRI-support
> for Dual-Head configurations in newer drivers or not.
> 

It is possible on radeon, sis, and mga dualhead cards using the
mergedfb feature.  It's only possible right now on cards with two
outputs.  multi-card dualhead will require quite a bit more work.  For
radeon you will need at least xorg 6.8.0 for mergedfb support.  See
the radeon man page or Thomas' sis page (http://www.winischhofer.net/)
for more on mergedfb mode in general.

Alex

> My Hardware:
> 
> Compaq Evo N800c Notebook
> ATI Technologies Inc Radeon Mobility M7 LW [Radeon Mobility 7500]
> Primary (internal) display: TFT 1400x1050
> Secondary (external) display: TFT 1280x1024
>