[mythtv-users] nvidia mx 440 - tv blanks after a few minutes

[J. Donavan Stanley]

malcolm wrote:

>
>Sorry that was just a typo in the email.  I do have TVOverscan in there.  I
>tried different settings from 0.1 up to 1.0 and the only difference I see is
>the number of flickering lines on the blackbox gui right before mythfrontend
>starts.  The black bands on the top and the bottom of the screen don't
>change.  They are pretty large too.  I'd say at least an inch.  My pvr-350's
>tv out doesn't do that.
>
>  
>

Are you using the 4363 video drivers? Later versions have overscan (and 
other important things) broken.

>>Are you using XvMC?  You can tell if your OSD while watching TV is
>>grey.  Are you using twinview?  Do you have the deinterlace filter
>>turned on?
>>    
>>
>
>XvMC?  Not sure what that is exactly.  My OSD while watching TV is in color.
>If I pause I get blue background with a red boarder and white writing.  I do
>not have the deinterlace filter turned on.  I tried turning it on but that
>looked worse so I turned it back off.  That's only for monitors right?
>  
>

XvMC is a way to accelerate MPEG2 playback using your video hardware.  
It also precludes using things like deinterlacing filters.  The 
deinterlace filter isn't just for monitors, it's for anything that's not 
using an interlaced signal, and since the Nvidia drivers aren't 
outputting an interlaced signal that's pretty much everything.  That 
being said, on some chipsets the drivers appear to deinterlace 
automagicly so it may not be needed.


>>>      
>>>
>>You might want to fine tune things a bit.  Try searching the archives
>>for "modeline".
>>    
>>
>
>I've seen lots and lots of modeline examples posted to the list but I really
>don't understand what they are.  I tried just pasting in a few but not
>knowing what I'm looking for I'm just blindly picking them.  I couldn't see
>any changes with the few I tried.
>  
>

The modelines allow you to tune your video card to the monitor (or TV) 
better than just dropping in a resolution and a couple refresh rates...