xorg 6.8 broken dual-head in radeon RV350

[Alex Deucher]

On 10/15/05, Paul Kaplan <pkaplan1 at comcast.net> wrote:
>
> > Phil Dibowitz wrote:
> > > Hey folks,
> > >
> > > So it turns out that the 6.8 branch seems to have broken the ability to
> > > use the dual-headed capability of the ATI Technologies Inc RV350
> > > [Mobility Radeon 9600 M10] card.
> > >
> > > In particular while having trouble making this work, I found this:
> > >
> > > http://lists.freebsd.org/pipermail/freebsd-mobile/2005-January/005613.htm
> > >l
> > >
>
> > >
> > > I'm using Xorg 6.8.2 in Debian unstable - not sure what the other people
> > > I pointed to are running.
> > >
> > >
> > > I suspect it's perfectly likely no one ever reported this to the
> > > developers, so I thought I'd send an email and see if it was a bug, or a
> > > new config that needs to be there, or what.
> > >
> > > Thanks,
> >
> I seem to have similar problems on a Radeon 7500 running under Mandriva 2006
> (xorg 6.9 recent cvs)...can only get an internal laptop LCD recognized, no
> luck with an external monitor.  I'm was wondering whether it was my config
> file.
> Might have to roll back to xorg 6.7.  Any idea how/when this might be fixed?
> Paul

try adding:
Option "MonitorLayout" "LVDS, CRT"
to your device section.

Alex