XVideo problems on Radeon 9800 PRO and DVI/component dongle

[Matthew McLean]

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.

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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