[mythtv-users] xorg.conf Section Extension

[Sarah Katherine Hayes]

Drew Tomlinson wrote:
> I'm attempting to enable XvMC on a Nvidia FX 5500 card.  I've followed 
> the instructions on the wiki 
> (http://mythtv.org/wiki/index.php/XvMC#NVIDIA_2).  My question is 
> regarding adding these lines to my xorg.conf file:
>
> Section "Extensions"
>     Option "Composite" "Disabled"
> EndSection
>
> What do these lines mean?  "Section Extensions" is not in the xorg.conf 
> man page.  Googling reveals lots of advice to *enable* it for Compiz but 
> no explanation of what it does.
>
>
>   
Basically there are multiple ways the compositing system can work, the 
Nvidia cards (and drivers) have a way of doing this without needing 
assistance.  Enabling it, as you say, is required for Compiz on Nvidia, 
but won't let XvMC work.  TBH that's all I know.

It'd have guessed the chromakey functions might well require the same 
things Compiz does; which might mean you've walked slap in to an Nvidia 
driver limitation...  but I can't so for certain.