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LCD TV connection via DVI to HTPC.

Discussion in 'Desktop & Laptop Computers Forum' started by zerocool1, Aug 9, 2005.

  1. zerocool1

    zerocool1
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    I hope someone can help me here.
    My 32” LCD TV (http://www.relisys.com/products/features.cfm?cat_id=2&size=13&prod_id=94) is connected to my HTPC, with an ATI Radeon 9800 graphic card, via DVI. The panel has a native resolution of 1366x768 and I have managed to get 1:1 pixel mapping.

    Still I have 2 problems:
    - When I run 1366x768 or 1360x768 a horizontal flickering line moves from the bottom of the screen to the top. The problem is only present with the mentioned resolutions.
    - On the right side of the panel 6 pixel lines is distorted.

    Thanks :)
     
  2. lisag

    lisag
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    A guess - try different refresh rates?
    What does the manual say about this, I would try 50hz, 60hz, 70hz, 75hz, up to whatever max the panel supports.

    lisa
     
  3. zerocool1

    zerocool1
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    I think you’re probably on to something there Lisa.

    I’ve spent some hours tinkering with Powerstrip and this is what I have come up with so far:
    -I have achieved at getting the flickering vertical line to move faster, slower and in the opposite direction (from the top to the bottom). However I have not achieved in getting the line to disappear.
    - I have got the distortion in the right side to disappear (it seems that all the pixel lines are activated). However when this calibration is activated I no longer have 1:1 pixel mapping in the vertical direction.
    I think the problem lies with the 6 extra activated pixel lines.

    The 2 different descriptions are with two different calibrations.

    In the LCD manual it states that 1366x768 runs with a horizontal frequency of 48.387 KHz and a vertical frequency at 60.00 KHz.

    This is what I get when running the "Digital test pattern by Mark". It is set up as a background image and tiled on my desktop.
    [​IMG]

    This is how it looks when I succeed in getting 1:1 pixel mapping.
    [​IMG]
     

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