radeon hd4650 problem

[beni]

On Sunday 14 March 2010 18:53:40 Robert Noland wrote:
> On Sun, 2010-03-14 at 17:32 +0100, beni wrote:
> > Hi,
> > I'm running 8.0-RELEASE-p2.
> > I am trying to use the radeon (or radeonhd) driver for my Sapphire HD4650
> > card. But it doesn't work. I get a black screen just before the
> > logon/login screen should appear. And my pc freezes. I can not get into a
> > console with alt-f<x>. The only way out is a cold reset/reboot.
> > The only driver working now is Vesa in 1280x1024, but that leaves a black
> > border of 7-8 cm on both sides of my 23 inch monitor...
> > I asked for help on the OpenSuse mailinglist (i found their email address
> > in the Xorg.0.log) but they said it is the drm kernel module that is not
> > up to date (see thread on
> > http://lists.opensuse.org/radeonhd/2010-03/msg00012.html). I manually
> > recreated a new /root/xorg.conf.new and copied it to /X11, but with the
> > same negative result so far.
> 
> The linux folks don't know much about what is going on in FreeBSD...
> Especially not the suse folks.  The ATI/AMD folks are fairly aware,
> but...
> 
> > I am pasting my /etc/X11/xorg.conf and /var/log/Xorg.0.log here.
> > Please cc me as i not subscribed to the list.
> > Thanks for any help !
> > Beni.
> 
> This is an agp card?

This is indeed an agp card. 

> I have an idea of what is going wrong, but I would like to see an Xorg
> log file using the radeon driver to verify.  Based on the addresses
> reported, I suspect that your ring buffer is being mapped inside of the
> framebuffer, which usually appears as corruption along with other odd
> issues.  If so, I already have patches for that...
> 
> Other possible things to try are to force it into pci mode.
> 
> Option "BusType" "PCI"
> 
> robert.
> 

The Xorg.0.log file was below in the previous mail, under the xorg.conf file. 
But i can post it pastebin if you want it.

Where do i put that option ? In the Section Device ?
Thanks for your help !
Beni.