radeon 9000 (rv250) dvi 1920x1200 troubles

[Andre Puschmann]

Alex Deucher wrote:
> On Wed, May 14, 2008 at 2:50 PM, Andre Puschmann
> <andre.puschmann at stud.tu-ilmenau.de> wrote:
>> Hey guys,
>>
>>  sorry for waisting this thread again.
>>  Unfortunately, I am still having problems with permanently adding the
>>  configuration to the Xorg settings.
>>
>>  I added the modeline to my xorg.conf and also set "PreferredMode" but it
>>  doesn't work. I also tried to disable DDC (at the display and at xorg.conf).
>>
>>  However, I am still getting something like this:
>>
>>  (**) RADEON(0): Option "PreferredMode" "1920x1200"
>>  (WW) RADEON(0): Option "PreferredMode" is not used
>>
>>
>>  Any hints?
> 
> You'll have to add the option and modeline to the monitor section
> associated with the output in question since your card supports
> multiple outputs.  see this page for more info:
> http://www.intellinuxgraphics.org/dualhead.html

Ah, I see.
That works excellent, except the fact that I have to disable the
internal output manually using "xrandr --output LVDS --off".

I am not sure If it is possible switch between two settings.
- Laptop standalone with no external monitor
- Laptop with external monitor, Laptop display switched off


Best regards,
	Andre