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

Allen Edwards allen.edwards at oldpaloalto.com
Sun Aug 24 00:31:00 UTC 2008

On Sat, Aug 23, 2008 at 5:22 PM, Thomas Börkel <thomas at boerkel.de> wrote:
> 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

I saw this on my system as well but assumed that since S-Video was
interlaced, why would you de-interlace it.  Is this a problem?


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