XVideo problems on Radeon 9800 PRO and DVI/component dongle

[Alex Deucher]

On 5/5/06, Matthew McLean <surfer at yikes.com> wrote:
> Yes, with the xorg radeon driver I've been able to use the DVI to
> component adapter.  2d and gl work OK.  xvideo does not work.  I was
> looking through your archive and had already seen that XV_SWITCH_CRT
> bug and it doesn't help if I set that.  I don't really understand why
> you need to know anything about the ATI adapter.  Isn't it designed
> to do all the work on it's own?  i.e. it does not need a software
> driver?  The video bios turns on the text console just fine and X in
> 2D works fine too.  I hope this is something that can be worked
> around without needing help from ATI.  That's pretty scary that I'm
> the only person that's using this component adapter.

Perhaps the bios can detect the component cables are in use and
initializes the hardware properly.  Generally component cables carry
YUV data and DVI and vga ports output RGB data.  Maybe your TV is able
to detect the signal type coming to it and adjust from YUV to RGB.  If
it is sending YUV data, then perhaps it makes use of the linear
tranform unit which would presumably screw up Xv.  Does it work if you
boot the computer without the component cable attached, and then try
and load the radeon driver later?

Alex

>
> Thanks,
> Matt.
>
> At 10:47 AM 5/5/2006, Alex Deucher wrote:
> >Are you saying your system works with the DVI to component adapter?
> >AFAIK, you're the only person that's either used or been successful
> >with that adapter. ATI has not released any information about the how
> >it works or what's needed to make it work.
> >
> >This looks like:
> >https://bugs.freedesktop.org/show_bug.cgi?id=5623
> >does setting the Xv attribute XV_SWITCH_CRT fix the problem for you?
>