Coloured lines on screen with DVI

Discussion in 'Computer Components' started by chrisbaker42, Jan 12, 2008.

  1. chrisbaker42

    chrisbaker42
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    I have a Saphire X1550 PCI-E graphics card and have just got 20" Viewsonic monitor and I now have coloured lines flashing across the screen particularly noticable when using VMC. I noticed this before when outputting DVD's to my plasma over DVI, I have never noticed it over VGA. Is it a graphics card problem as I have already tried different leads?
     
  2. chrisbaker42

    chrisbaker42
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    As an update to this, the lines are always horizontal and appear far more frequently if I am doing graphics dependent things such as using VMC to either play music with a slide show, show a DVD or when using photoshop to edit large files.
     
  3. pjclark1

    pjclark1
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    plug your display into the other output on the graphics card.
     
  4. chrisbaker42

    chrisbaker42
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    The other output is VGA, this is not a dual DVI card.
     
  5. chrisbaker42

    chrisbaker42
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    I seem to have significantly reduced the problem by changing DVI settings in ATI catalyst to Reduce DVI Frequency on high res displays and the Alternate DVI operational mode. Perhaps this seems to suggest a better graphics card may be the solution. For a relatively cheap alternative would the ATI 2400XT or 2600Pro be suitable?
     
  6. Sukh88

    Sukh88
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  7. pjclark1

    pjclark1
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    All the ATi 2xxx series have the same problem, on the 2 rear sockets, one has a slightly "out of spec" output which certain monitors don't like. Getting a new card may not cure the problem (I know I tried it). Of course getting a new ATi card with dual DVI sockets will cure the problem, as you can use the working DVI socket.
     
  8. chrisbaker42

    chrisbaker42
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    As this problem either has now dissappeared or at least is no longer noticeable is there anything to be gained from upgrading the graphics card as I do not use the machine for gaming but mainly editing large photographic files and occasionally watching DVD's.
     

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