On a sunny day (Thu, 15 Mar 2012 09:00:52 GMT) it happened snipped-for-privacy@puntnl.niks (Nico Coesel) wrote in :
That depends on the type of TFT monitor. And actually also on the type of screen. And there is the start of it all, 'that 'controller' you talk about. Still the X server frame refresh is not normally locked to the frame change, only, as I pointed out if special measures are taken. On top of that, if you have a LCD teevee with VGA input then
50 Hz is NOT a VGA standard, adding even more problems. So then there are the guys running a 60 Hz display, probably most of the peesees, and feeding that with HDMI into the latest LCD TV, and then play a 50 Hz movie on it. I have tried all that to see what happens, and it is shit. I had, as referring to 'controller' a litte few inch 12 V composite in monitor. It did 50 Hz no problem, as it would just PAL decode and refresh the LCD at that rate, Those TFTs are simple analog in RGB and you can control the scanning. Nothing was 'converted'. The big LCD TVs and monitors do indeed conversion, are basically a frame store, but even those have to flip in a new frame in sync, else you get a tared picture, It is amazing how little people really know about video these days, And then do not even get me started on interlace.