[mythtv-users] how to set up xorg.conf for overscan

Jay R. Ashworth jra at baylink.com
Sat Oct 27 18:50:32 UTC 2007


On Sat, Oct 27, 2007 at 04:27:27PM +1000, Eyal Lebedinsky wrote:
> Tom Dexter wrote:
> > On 10/25/07, Ma Begaj <derliebegott at gmail.com> wrote:
> > Eyal:  I'm a little confused about the comment that they lied about
> > the TV being native 1280x720.  I thought most TVs tended to have
> > overscan.  My RP CRT is definitely native 1080i, but it has at least
> > 5? overscan.
> 
> This is a digital (rear projection DLP) TV, and as such there is no such
> thing as overscan, which was a feature of the analogue process in good
> old analogue. The pixels on the edge are no more wobbly than the ones at
> the center (which did happen in analogue TV).
> 
> The input is digital (DVI/HDMI) as is the projection system (DLP). Anyone
> claiming 1280x720 in a digital process and not delivering it is simply lying.
> 
> When they say that it is native 1280x720 there should be 1280x720 pixels
> all the way from the input to the DLP chip and finally on the screen.
> This is not the case for this unit, which has far less on the screen.
> 
> With the technical menu you can shift the part of the 1280x720 input
> that will be displayed (on the lower res output) but there is no way
> to simply have it all on the screen, as it should.
> 
> Executive summary: LG lied. And I hear they were not the only ones.

And so you think that no one anywhere feeds analog sources -- you know,
those things which have wobbly pixels *into* this particular model of
TV set?

Overscan isn't to protect you from the monitor; it's to protect you
from the source.  Non-digital sources almost always have it, and if
they didn't, the civilians would bitch.

If *no input to the set*, even VGA, has 0 overscan, *then* you would
have a case.  But otherwise, methinks thou dost protest too much.

Cheers,
-- jra
-- 
Jay R. Ashworth                   Baylink                      jra at baylink.com
Designer                     The Things I Think                       RFC 2100
Ashworth & Associates     http://baylink.pitas.com                     '87 e24
St Petersburg FL USA      http://photo.imageinc.us             +1 727 647 1274


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