Output VGA to TV

[Paul Groves]

Hi all.

So I have a small foxconn nettop NT-3700 PC which I wish to use on 
ubuntu in the bedroom, mainly to run kodi.

It has VGA output  on the onboard AMD 6000 series graphics card which 
supports C-Sync on the H pin.

I have set up the graphics card to output PAL 576i at 25fps 50HZ

However I cannot work out how to change the Horizontal sync from 31KHz 
to 15.6KHz, with the result being that I can see the picture but it is 
continuously scrolling across the screen very fast.

Is there a way do do this with a command? Of course if the graphics card 
supports it. How would I check this?

Does anyone have any experience with this?

Thank you

Paul