[Patch] Allow to configure RANDR 1.2 outputs with no device attached

[Barry Scott]

Keith Packard wrote:
> On Mon, 2007-03-12 at 16:05 +0100, Matthias Hopf wrote:
>
>   
>> Anything that speaks against this patch, or shall I commit?
>>     
>
> The most serious issue I see is that this will encourage people to
> configure the monitor before plugging it in, which will often fail for
> monitors which cannot use the default modes. Is it not better to wait
> for the monitor to appear before presenting the supported modes?
>
> I cannot see any particularily good reason to present modes to the user
> which may not actually work, especially when it is so easy to simply
> wait and present a legitimate set when the monitor is connected.
>   
If "connected" means the monitor returns DDC info then
any monitor connected using VGA over CAT-5 will need this fixed
as those products do not support DDC.

Barry