[mythtv-users] Re: VGA to Component on WEGA

Cory Papenfuss papenfuss at juneau.me.vt.edu
Thu May 19 18:16:28 UTC 2005


> You mentioned to have me check if my xorg was actually using that line,
> how do I make it use it?  Just have that the only one in there?
>
 	Down in the 'Screen' section, you need to have stuff like:

Section "Screen"
         Identifier "Screen0"
         Device     "Videocard0"
         Monitor    "Monitor0"
         DefaultDepth     24
         SubSection "Display"
                 Viewport   0 0
                 Depth     16
                 Modes    "ATSC-480-60p" "800x600" "640x480"
         EndSubSection
EndSection

 	The label is arbitrary but it has to match your modeline 
definition.  Make sure that it's used in the /var/log/Xorg.0.log.  Most 
likely it'll say something like "Not using Modeline 'ATSC-480-60p' HSync 
out of range'  You'll need to redefine your monitors sync range to be 
NTSC-friendly.... something like this is what mine says:

Section "Monitor"
         Identifier   "Monitor0"
         VendorName   "Monitor Vendor"
         ModelName    "Dell D1626HT"
         DisplaySize  380        290
         HorizSync    30.0 - 95.0
         VertRefresh  50.0 - 160.0
...

 	The "HorizSync    30.0 - 95.0" needs to include 15.734kHz or X 
will protect you from yourself.  Change it to "15-64" or something...

 	Note that a VGA monitor won't sync that low (garbled picture), and 
could possibly damage it... don't connect one when using that modeline if 
worried.

-Cory

*************************************************************************
* Cory Papenfuss                                                        *
* Electrical Engineering candidate Ph.D. graduate student               *
* Virginia Polytechnic Institute and State University                   *
*************************************************************************



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