[mythtv-users] most resolutions cause nv tv-out to get chopped

Nick Bartos spam1001 at 2thebatcave.com
Mon Mar 6 15:48:11 UTC 2006

I am trying to use the standard ntsc resolution (720x480) for output, but
the nvidia tv-out is causing a large portion of the screen to be outside
of the viewable range.

For testing I don't have overscan enabled, I can see black borders on my
TV (which normally I would use overscan to get rid of).

The edge of the actual X screen would be beyond the edge of the svideo
output (edge of the black border on my tv).  There is actually a lot of
information lost and as such I can't use most resolutions.

I have used 800x600, and 1024x768 without this issue.  However 720x480 and
640x480 don't work.  I really want to use 720x480.

In addition to using the standard modelines, I have tried these (outputted
by the gtf utility):

Modeline "640x480_59.94"  23.83  640 656 720 800  480 481 484 497  -HSync
Modeline "720x480_59.94"  26.69  720 736 808 896  480 481 484 497  -HSync
Modeline "800x600_59.94"  38.12  800 832 912 1024  600 601 604 621  -HSync
Modeline "1024x768_59.94"  64.04  1024 1080 1184 1344  768 769 772 795 
-HSync +Vsync
Modeline "720x480_60.00"  26.72  720 736 808 896  480 481 484 497  -HSync

I have tried both 59.94 hz and 60 hz refresh rates, but that doesn't seem
to matter.  Also it doesn't seem to matter if I use the built-in modelines
or the custom ones (except for doing 720x480, which of course I need to
use a custom modeline for or X won't accept it at all).

I have also tried 7667, 7676, and 8178 driver versions.

Any ideas?

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