[mythtv-users] Bob and TV-Out: refresh rate too low

Thomas Börkel thomas at boerkel.de
Sun Aug 24 00:22:35 UTC 2008


HI!

I realize, this is a problem that appeared several times here, but I did
not find a solution.

TV-Out (S-Video) worked with 50 Hz and Bob Deinterlacing some time ago.

Now, with newer NVidia drivers, it does not ("refresh rate too low"). I
think, because NVidia driver reports 49.99 Hz (I see that in
nvidia-settings) to MythTV.

I tried lots of variations in xorg.conf to get 800x600 at 50 or 720x576 at 50.

I can get 720x576 only with 59.96 Hz or 800x600 with 49.99 Hz, but
neither with 50 Hz. I am using TV-Standard PAL-B and metamodes.

On my new LCD TV, metamode 1920x1080_50 gets 50 Hz. But the _50 does not
work with 800x600 or 720x576 (falls back to 1024x768 at 60 then) on my old TV.

So, I set vertical refresh capability of the monitor to 50, but that
gets me 49.99 with 800x600 and is ignored with 720x576. Why?

Any hints would be greatly appreciated.

Thanks!

Thomas


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