Re: [Linux-fbdev-users] probably an FAQ - g450 vs g400 tv out?

[davidm <dav...@da...>]

Umm. X on the tv-out doesn't seem to present any useful Xvideo
extension, and I was assuming that the reason for that was that it
required stuff on crtc1. Is that a false assumption? Would a g400
(instead of a 450) change this? Without the xvideo layer my p3@1GHz
seems to not be fast enough to do anything useful under X.

Actually it occurs to me now that even if X did present a nice Xv
extension on the tv-out, would mythtv (or any other player for that
matter) have any mechanism for playing interlaced video with the correct
synchronization? (Using mplayer's dfbmga output layer I need to set
fieldparity=top and vsync=1, and I'm not sure there would be any way to
do the equivalent? It would be rather sad to have to deinterlace the
video in software only to display it on an interlaced TV!).

Cheers,


David

Ville Syrjälä wrote:
> On Mon, Sep 10, 2007 at 11:01:29PM +0930, davidm wrote:
>> Hi,
>>
>> I suspect this ought to be an FAQ, but I can't find anything definitive
>> easily...
>>
>> I have a g450. I cannot get my tv to sync to the tvout if I attach the
>> primary crtc to that output (eg, taken from
>> http://www.rockhopper.dk/linux/hardware/graphics_cards.html:
> 
> G450/G550 hardware doesn't support what you want. Only CRTC2 can drive
> the TV-encoder.
> 
>> (obviously it would be nice to be able to get the goodies from the
>> primary crtc through the tv, rather than effectively having a dumb fb).
> 
> Well, the only goodie CRTC1 has over CRTC2 is the BES so you're not missing
> that much.
>