[Openchrome-users] 720x576Noscale does scale 720x576Over doesn't scale

[Paul Gardiner]

Ivor Hewitt wrote:
> Paul Gardiner wrote:
>> I've recently set up a MythTV frontend using Minimyth on a board with  
>> a CN700 and a VT1622A. I'm using TV out via S-Video to a CRT TV with  
>> Scart input. I initially set up mode 720x576Noscale, and was pleased  
>> to find the TV image fitted to the TV screen exactly, but there were 
>> a  few strange things that started to make me think that the image 
>> was  being scaled:
>>
>> 1) The OSD images had to be adjusted to about 650x550, for it to also 
>> fit the
>> TV screen.
>>
>> 2) The TV image showed various artifacts that could be exaplain by  
>> scaling (jagged diagonal edges, rippling during pans, a general  
>> softness of focus).
>>
>> When I first looked at the X screen via VNC I found TV was being  
>> scaled. The X screen was 720x576, but the decoded TV image was being  
>> mapped onto a 650x550 subarea, and this area was somehow mapping  
>> exactly onto the TV screen.
>>
>> I've just swapped to using the mode 720x576Over. I get a much better  
>> quality image, and now the TV image extends off the edge of my TV  
>> screen by the same amount as the OSD. If I look via VNC, I can see 
>> the  TV image mapping directly to the full 720x576 area of the X screen.
>>
>> Anyone know what's going on here? Also, anyone know how I should  
>> adjust the mode to fit correctly to the TV. I have no real experience  
>> of adjusting X. Is there a tool that allows on-the-fly adjustment of  
>> mode variables?
>>   
> please post a gzipped xorg log of the noscale mode. It should work.

Sorry, sorry, sorry: I've been talking rubbish! I did somehow have
the "Use GUI size for TV playback" option set! (I'm using a theme
that makes button state difficult to discern).  Now that I've
corrected that setting, I seem to have both Over and Noscale working
equally well.

I still have the problem of only a subarea of the X screen being
visible on the TV. Is there anything I can do about that?

Is the Xorg log still worth posting?

Cheers,
	Paul.