[mythtv-users] Video sync not working in TV out

[Owen B. Mehegan]

That doesn't seem to be it. Force Full GPU Scaling is not checked,  
checking it changed nothing. Neither did changing the GPU Scaling  
Method to either of the other two options.

I notice that the nvidia-settings tool sees that the screen resolution  
is set to 640x480, and it seems to know that my TV is widescreen (if  
that's the meaning of the grey box that surrounds the smaller box  
labeled 640x480). But I can't set a different/higher resolution  
anywhere in the tool or elsewhere in the system settings.

When I set up X on this TV before, I had to do a lot of digging online  
before I found some modeline settings that someone else worked out,  
which worked for my TV. I'm not sure if nowadays there's an easier way  
to do this. I think this TV is fairly "dumb," not like the LCD and  
plasma displays that are basically just big computer monitors. This is  
the relevant section of my xorg.conf:

Section "Monitor"
     Identifier     "Monitor0"
     VendorName     "Sony"
     ModelName      "HDTV"
     HorizSync       33.8 - 33.8
     VertRefresh     59.9 - 59.9
     Mode "720p"
     DotClock 37.26
     HTimings 960 976 1008 1104
     VTimings 540 542 548 563
     Flags "+HSync" "+VSync"
     EndMode
EndSection

I think I just need to get X to run the right resolution. But these  
settings used to work!

On May 18, 2008, at 5:25 PM, James M. MacLaren wrote:

> I had something similar after upgrading to mythbuntu 0.84.
> I found that running nvidia-setting I had under the GPU 0 settings
>
> flat panel scaling
> force full gpu scaling checked, unchecking that fixed the problem
> I also checked gpu scaling method centered.
>
> Hope this helps
>
>
> James
>
>
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