On Sat, 2010-10-16 at 14:51 +1100, Adam Carter wrote:
> I use an xorg.conf, and have the following;
> 
> Section "Files"
>         ModulePath "/usr/lib64/xorg/modules"
>         ModulePath "/usr/lib64/opengl/xorg-x11/extensions/"
> EndSection
> 
> Your xorg cant find the dri and dri2 modules because its not looking
> in the second directory. 
> 
> Also, it might be worth trying the latest driver, so 
> # echo "x11-drivers/ati-drivers ~amd64"
> >> /etc/portage/package.keywords
> Then emerge ati-drivers again.
> 
> If that doesnt help, send the X11 log again after you've made those
> changes.

I made the changes above, and added the fbdev entry to VIDEO_CARDS from
Nikos' e-mail.  

I also added fglrx to my /etc/modules.autoload.d/kernel-2.6 file.

It's a bit overkill but next I did emerge -Dav system and emerge -Dav
world before running emerge -NDuav system and emerge -NDuav world.

I rebooted the machine, ran startx and it looks like success.
I reinstalled xdm to the default runlevel, and I have a working graphics
card.  Thanks all for the advice.

There are a couple of issues:
(1) Even though the resolution is set to 1920 x 1080, it appears to be
scaled so that it doesn't fill the entire screen.  It is scaled to about
90% for some reason.
(2) Compositing is not supported as it stands.  I may need to switch
that on in xorg.conf.

Does anyone know how to fix the scaling issue or whether it is advisable
should turn on compositing in xorg.conf?

Jeff