[mythtv-users] [OT] 1080i

Andrew Gallatin gallatin at cs.duke.edu
Tue Mar 1 18:25:19 UTC 2005


Bryan Murphy [bryan at terralab.com] wrote:
> Andrew Gallatin wrote:
> >>The VGA port will not have the interlace bug, you can make it work
> >>using the Audio authority.
> 
> Question... What's the interlace bug?  I recently got 1080i working over 
> DVI on my 6600GT.  I have a lot of flickering  that I can't get rid of 
> (especially with white borders over dark backgrounds).  Is this the 
> interlace bug?

The interlace bug has been described as the card drawing the
interlaced lines at the wrong place.  So rather than drawing
line X, followed by line X+1, it draws line X, followed by line
X+10.  Then it goes back and draws line X+2 followed by X+12.
So the picture appears to "shake" up and down.

On mine, the shaking is so bad that it is aparent even when
the nvidia logo comes up.  It looked so scary that I quit
X then and there.   I had some flickering for text with the
mga, but video looked great.

Drew


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