XVideo problems on Radeon 9800 PRO and DVI/component dongle

[Alex Deucher]

On 5/5/06, Matthew McLean <surfer at yikes.com> wrote:
> Hello,
> I have a 32-bit Gentoo/linux system that I set up recently as an
> HTPC.  I've tried the 'fglrx' driver and I've tried the open source
> xorg 'radeon' driver.
>
> * with the fglrx driver... everything seems to work great, even
> xvideo, but it will absolutely NOT work *at all* with my
> DVI/component dongle, which ironically is sold by ATI.  Can't get a
> desktop, 3d, 2d, nothing.  Can't even hook it up to my TV at all with
> the component dongle.
> * with the open source driver... opengl and 2d acceleration seem to
> work fine (even though I know opengl is currently an issue).  but,
> XVideo won't work *at all*.
>
> Whenever I try to use mplayer with '-vo xv' all of the output from
> mplayer looks normal, but then the screen just goes blank.  It's like
> my TV is trying to lock onto the signal but can't.  Intermittently it
> will lock onto the picture (which looks almost psychadelic because
> it's mostly shades of pink), but most of the time it just sits there
> with a blank screen.  Once I quit mplayer it goes back to my desktop
> and everything is fine.  Alternatively, If I use '-vo x11' or '-vo
> gl' everything looks OK.
>
> Since most people it seems like can use Xvideo with the currenty open
> source radeon driver I'm assuming this might be related to my
> DVI/component dongle, but I have no idea why it matters.  The adapter
> works fine in windows and I'm even using the same monitor timings
> with my TV that ATI's windows driver used @ 1280x720p.  When I use a
> normal DVI/vga adapter or just plug a normal computer screen into the
> VGA port on the card, everything also works fine.
>
> Is there more debug information I can provide to help track this down?
>
> I'd rather use your radeon driver because a) it's open source and b)
> I know I'll get a lot more help from you guys than from ATI... I just
> know that I'm so close to having a usable HTPC system, but my xorg
> issues are seriously holding me back.  Any help would definitely be
> appreciated.  I'd really like to help get this fixed.  I have enough
> knowledge that I can be helpful in fixing this and I'm willing to
> devote some time to it if necessary.

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?

Alex

>
> Thanks,
> Matt.
>
> $ X -version
>
> X Window System Version 7.0.0
> Release Date: 21 December 2005
> X Protocol Version 11, Revision 0, Release 7.0
> Build Operating System:Linux 2.6.16-gentoo-r4 i686
> Current Operating System: Linux HTPC 2.6.16-gentoo-r4 #31337 PREEMPT
> Mon May 1 11:55:56 CDT 2006 i686
> Build Date: 03 May 2006
>          Before reporting problems, check http://wiki.x.org
>          to make sure that you have the latest version.
> Module Loader present
>
> (A.K.A.) Gentoo's version is 'xorg-server-1.0.2-r4'
>
> I've attached my xorg.conf and Xorg.log files since they will tell a
> lot about my system.
>
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>