[mythtv-users] [OT] 1080i

[Bryan Murphy]

> 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

That's almost certainly what I'm seeing then.  I get it a little bit 
with my 720p modeline, but it's nowhere near as pronounced as the 1080i 
modeline where it's almost unbearable.

I snagged my modelines from windows using PowerStrip.  I haven't really 
tweaked them yet, I don't even know where to start.

I have another, related question:

When I use my 1080i modeline, xvidtune reports my resolution as 
1920x1080.  When I use my 720p or 480p modelines, instead of 1280x720 
and 720x480, I get 1024x768 and 640x480 respectively.

When I was in windows using powerstrip, windows reported I was using the 
correct HDTV resolutions.

My question is:  Why am I not getting standard CRT resolutions instead 
of HDTV resolutions on Linux?  I'm using the modelines Powerstrip 
generated for windows when I had it working correctly.

Here are my modelines for those who are interested:

Section "Modes"
   Identifier   "Modes[0]"
   Modeline     "720x480"  27.000 720  736  798  858  480  489  495  525 
-hsync -vsync
   Modeline     "1280x720"  74.250 1280 1398 1438 1666 720  727  732 
754  +hsync +vsync
   Modeline     "1920x1080" 74.250 1920 2008 2052 2200 1080 1084 1089 
1125 interlace +hsync +vsync
EndSection

Section "Monitor"
   Identifier   "Monitor[0]"
   ModelName    "Sony"
   Option       "DPMS"
   VendorName   "Sony"
   UseModes     "Modes[0]"
   HorizSync    30-50
   VertRefresh  60
#  Option   "TVStandard" "HD720p"
   Option   "TVStandard" "HD1080i"
   Option   "TVOverscan" "0.0"
   Option   "IgnoreEDID" "true"
EndSection


I'm currently using SuSE 9.2 with an Nvidia 6600GT card and the 6629 and 
everything is over DVI.

Bryan