[mythtv-users] VGA to Component on WEGA
Cory Papenfuss
papenfuss at juneau.me.vt.edu
Thu May 19 15:55:19 UTC 2005
On Thu, 19 May 2005, Eric Jensen wrote:
> I have a Sony Wega FD Trinitron (KV-36FS100) hooked up with a VGA to
> Component adapter. I am having some troubles getting it to output
> correctly on theTV. I spent several hours going through various guides
> meant more for the HDTV models, but with no luck. Mostly because I
> don't understand video at all, I'm sure. It looks the the refresh and
> colors are good, the video doesn't roll or anything like that. But it
> is squished and repeated into 3 columns accross the TV. If anybody has
> some tips on what I need to put in my xorg.conf that would be greatly
> appreciated. I'll put what I have now up too.
>
If it is squished and repeated three times, then the refresh is
*NOT* good. The TV is not syncing to the signal you are providing. It
sounds like it's catching the vertical sync, but not the horizontal.
> ModeLine "ATSC-480-59.94p" 23.916 640 664 736 760 480 482 488 525
The frequencies on this seem to be correct for 480p (23.916e6/760
= 31.468kHz = 2x 15.734 kHz = 2x SDTV). You might try appending one of
these to the end of the modeline to see if you can convince the transcoder
to change its sync to something the TV likes.
+vsync +hsync
+vsync -hsync
-vsync +hsync
-vsync -hsync
Also, check the /var/log/Xorg.0.log file and make sure you're
using the ATSC-480-59.94p modeline... the other ones are NOT 480p. Since
you're seeing three squished images, I'm suspect that you are using the
72p one.
-Cory
*************************************************************************
* Cory Papenfuss *
* Electrical Engineering candidate Ph.D. graduate student *
* Virginia Polytechnic Institute and State University *
*************************************************************************
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