Bug#389007: [Xorg-driver-ati] Bug#389007: Regression: Radeon 9200 powers off Apple Cinema Display connected via DVI

[Roger Leigh]

On Fri, Oct 27, 2006 at 07:18:55AM +1000, Benjamin Herrenschmidt wrote:
> On Thu, 2006-10-26 at 19:25 +0100, Roger Leigh wrote:
> > Benjamin Herrenschmidt <benh at kernel.crashing.org> writes:
> > 
> > >> I found a solution to the problem.  Adding
> > >> 
> > >>         Option "PanelSize" "1680x1050"
> > >>         Option "MonitorLayout" "TMDS,NONE"
> > >> 
> > >> made the display work correctly.  IIRC this was needed with XOrg 6.9,
> > >> but wasn't needed with 7.0 (because it was intelligent enough to
> > >> autodetect correctly?).  This seems to be a regression in 7.1.
> > >> 
> > >> Both the PanelSize and MonitorLayout need to be exactly as above.  If
> > >> either is commented out, or I change MonitorLayout to just "TMDS", the
> > >> monitor powers off.
> > >> 
> > >> 
> > >> Just in case it's affecting anything, I'm adding
> > >> 
> > >>   append="video=radeonfb:1680x1050-32 at 60"
> > >> 
> > >> in my yaboot.conf in order to get a fullscreen framebuffer.
> > >
> > > radeonfb shouldn't need that ...
> > >
> > > What if, instead, you use Option "ReverseDDC" "true" btw ? Same
> > > symptoms ?
> > 
> > Yes, the display just powers off on startup (this is with PanelSize
> > and MonitorLayout commented out).
> 
> ANd with NoDDC ?

Sorry for the (very) delayed response.

NoDDC set to true or false has no effect.  The monitor is powered off
with all combination of this option with either or both of the PanelSize
and MonitorLayout commented out.

NoDDC set to true or false with both PanelSize and MonitorLayout
enabled result in a working monitor.


Regards,
Roger

-- 
  .''`.  Roger Leigh
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