ATI 6.7.192 Dual-Head DVI

[Alex Deucher]

On 9/22/07, Bryce Harrington <bryce at bryceharrington.org> wrote:
> On Fri, Sep 21, 2007 at 06:12:58PM -0400, Alex Deucher wrote:
> > On 9/21/07, Rick <palabra_up at yahoo.com> wrote:
> > > I just upgraded to X7.3.  Since FBMERGED no longer
> > > works I am trying to get my dual head Radeon X600 card
> > > to display on both monitors again. I have already
> > > setup the 6.7.192 ATI driver. My second monitor DVI-0
> > > is just displaying a black screen. I have a green
> > >
> > > xrandr --output DVI-0 --right-of DVI-1
> > > xrandr: screen cannot be larger than 1280x1200
> > > (desired size 2304x1024)
> > >
> > > How can I resolve this?
> >
> > For dual DVI cards you'll need to use the most recent driver from ati
> > git master.
>
> Should dual cards work?
>
> In experimenting with -ati's xrandr, I could get dual screen working
> with one card, but triple head with two cards doesn't seem to work (lots
> of screen corruption).
>
> Also, is Xinerama mode on -ati now deprecated, or is there a way to turn
> off xrandr to use Xinerama?

not sure.  I haven't tried it myself.  Xinerama support (zaphod mode)
is no longer supported and will not work in the new ati driver.

Also, bug 12519 may be interesting:
https://bugs.freedesktop.org/show_bug.cgi?id=12519
I'd appreciate it if someone could help me track down the commit
that's causing a problem.

Alex