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Date: Fri, 2 Nov 2012 15:21:35 -0600 (MDT)
From: Warren Block <wblock@wonkity.com>
To: ds <dk-sk@skynet.be>
Subject: Re: ATI HD 4850 driver
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On Fri, 2 Nov 2012, ds wrote:

> I installed stellarium and the 3d acceleration of my ATI 4850 card didn't 
> work in FreeBSD 9.0. The /var/log/Xorg.0.log showed that AIGLX could not load 
> the r600_dri.so driver because it was missing in the /usr/local/lib/dri/ 
> folder.
> So I recovered the r600_dri.so file from a PCBSD 9.0 installation and copied 
> it to my FreeBSD 9.0  /usr/local/lib/dri/ folder  and now my 3d acceleration 
> works. Are there plans to resolve this bug in FreeBSD version 9.1 ?

It's hard to say what happened on your system, but it works on others. 
The DRI libraries are installed by the graphics/dri port.  Deinstalling, 
rebuilding, and reinstalling that port should create them.  If it does 
not, something else is wrong on that system.