[mythtv-users] Modeline adjustments?

[Tim Scholl]

Cory, Steven,

Tied Cory's suggestion, that actually moves the "whole" image left or right
on the screen but does not effect where the position of the center is.

Steven,

How would I sent a standard a standard modeline in the Nvidia drivers?

Thanks


--------------------------------
Newer Nvidia drivers also have the HDTV standard modelines as
"1920x1080_60i"
"1280x720_60"



On 8/8/06, Steven Adeff <adeffs.mythtv at gmail.com> wrote:
>
> On 8/8/06, Tim Scholl <tascholl at gmail.com> wrote:
> > Cory,
> >
> > Thanks for the suggestions I'll give them a try and let you know!
> >
> > Tim
> >
> >
> > On 8/8/06, Cory Papenfuss < papenfuss at me.vt.edu> wrote:
> > > On Mon, 7 Aug 2006, Tim Scholl wrote:
> > >
> > > > The final frontier!  Have Myth running great I am now trying to
> > transition
> > > > to the HDTV display!
> > > >
> > > > I found a standard modeline of 1080i and put it into my XF86Config-4
> > config.
> > > > ----------------
> > > > HorizSync 31.5 - 37.9
> > > > VertRefresh 59 - 61
> > > >
> > > > ModeLine "ATSC-1080-60i" 74.25 1920 1960 2016 2200 1080 1082 1088
> 1125
> > > > Interlace
> > > > ---------------
> > > >
> > > > I startup mythtv and the dispay looks good on my monitor!!
> > sooooooooo...
> > > > I attached the vga output to an Audio Authority A960 transcoder,
> turned
> > on
> > > > my HDTV, and got WALLA!!   A fantastic picture,  great color,
> stable, no
> > > > jitter and looks great.
> > > >
> > > > Only one problem!!
> > > >
> > > > The left hand side of what should be the normal display,  is in the
> > middle
> > > > of the screen!!   Then rest of the display drops off at the end of
> the
> > > > screen and wraps around to the other side and joins again in the
> middle.
> > > > The full display is visable and clear as a bell!
> > > >
> > >
> > >         You could try adjusting it to something more like this:
> > > ModeLine "ATSC-1080-60i" 74.25 1920 2060 2116 2200 1080 1082 1088 1125
> > >
> > >         I added 100 dots of black on the right hand side and removed
> 100
> > > dots of black on the left-hand side (i.e. changed 1960->2060 and
> > > 2016->2116).  That should move the screen, but it won't move it
> anywhere
> > > close to half a screen width.
> > >
> > > > Since it looks good on the monitor, why is it so far off when
> displayed
> > on
> > > > the HDTV?
> > > > Not being a that familer with modelines, is this a modeline issue or
> do
> > I
> > > > need to look elsewhere?
> > > >
> > > > Does anyone know what needs to be adjusted to get it to shifted to
> the
> > left
> > > > hand side?
> > > >
> > >         You might try different combinations of [+-]hsync and
> [+-]vsync at
> > > the end of the modeline:
> > > ModeLine "ATSC-1080-60i" 74.25 1920 1960 2016 2200 1080 1082 1088 1125
> > +hysnc -vsync interlace
> > >
> > >
> > >         It definately sounds like the HDTV has having trouble finding
> the
> > > sync pulse.  Strictly speaking, HD-component requires bi-directional
> sync
> > > signals, and that's a much harder thing to generate (correctly) from
> RGBHV
> > > like VGA.  I don't know if the A960 does that, or makes the easier
> > > uni-directional sync.  Any jumpers to twiddle on the transcoder?
> > >
> > > -Cory
>
>
> Newer Nvidia drivers also have the HDTV standard modelines as
> "1920x1080_60i"
> "1280x720_60"
>
>
> --
> Steve
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-- 
Tim Scholl
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