[mythtv-users] Anyone using a GeForce 6600GT wand DVI->HDMI?

Nick Ellson grimm at nickellson.com
Tue Apr 4 19:41:28 UTC 2006

I have finished my basic Myth box, and have the Nvidia based kernel driver 
displaying 720p out of my DVI to my Sony Wega Grand's HDMI port. Aside 
from a bit of overscan in all directions it looks great!

So I was trying to do some performance tweaking and hoped someone else has 
had some experience they can share?

1. My TV accepts 1080i, but search as i might, I can't fine the modeline 
or settings in Xorg that will produce it on my DVI out. My card says it 
will do it, and other report doing it with Win XP, I'd like to find out 
how I can for Myth.

2. When I play live TV or DVD on the DVI out, it's jerky. I show direct 
rendering as ON in glxinfo. I have read posts that the ivtv driver can use 
xvmc to improve this, but when I attempt to enable it, I get errors saying 
that Xvideo extensions are not enabled for this display :0.1 (when mplayer 
launches with xvmc arguments)

I have not been able to figure out in I am missing something in my 
xorg.conf of not. Nvidia's support forum doen't seem to have much on this 
either. Now I have a Pentium 4 2.4 Ghz running in Hyper Threading ( seen 
as 2 CPU's) and I am assuming that means that it's just not fast enough to 
compensate for a good hardware decoder?


Nick Ellson
MCSE 2000, Security+, Network+
Network Hobbyist, VFR Private Pilot.

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