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.
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