[mythtv-users] g200 tv out

Robert Dege rdege at cse.Buffalo.EDU
Tue Mar 2 21:04:38 EST 2004



> I followed Robert Dege's howto exactly and got a signal that ran at
> 64hz, had a big black bar on the right and visible horizontal retrace
> lines.

I don't remember writing a HOWTO, but I do remember using one :)  I
believe 2 other people wrote a howto that was later linked from the
marvel.sf.net website.


> To get a useable picture, I had to explicitly set the xfree86 monitor
> definition to only use a 31.5-31.5khz horizontal frequency range and a
> 60.0-60.0 vertical frequency range.  At that setting, only 640x480
> resolution works (fine for TV), but the monitor output is now unusable.
> I followed that with a
> fbset -fb /dev/fb0 -t 39682 50 0 37 10 46 2 -g 640 477 640 480 32
> to get the picture centered and filled out.

In my XF86Config file, I created 2 monitor configs.  One for Television,
and one for a regular Monitor.  Here's my TV Config:

Section "Monitor"
    Identifier  "TV"
    VendorName  "RCA"
    ModelName   "RCA"
    HorizSync   31-50
    VertRefresh 60
EndSection

Using that, in combination with fbset, I am able to display to TV @
1024x768 w/16bit color.  I couldn't get a perfect picture on both the
Monitor and on the TV, (esp. with the low refresh on the monitor).
However, I was able to get them both somewhat working at the sametime.  I
think the TV was not totally centered or something like that.  With fbset,
one minor change with upper or lower could blank out the monitor
completely.


> Anyway, it works for tv out, even though I can no longer connect a
> monitor.  I dunno if running at 640x480 instead of something like
> 800x600 makes any difference.

Have color depth set to 16bit helps out.  I don't know the technical
parts, but it has something to do with only so much information can be
processed by the card at one time.


Dege

I'm just not up2date on my al-kee-hol-*hic* lingo
Although, I do have that slurring part down ;)


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