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Radeon 9600 XT pixel artifacts - HELP!

Discussion in 'Desktop & Laptop Computers Forum' started by mholgate, Jan 15, 2004.

  1. mholgate

    mholgate
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    I have just bought an ATI Radeon 9600-XT for my HTPC.

    I get what seems to be randomly-placed little 'flickering' multi-coloured pixel artifacts when playing a DVD using hardware-acceleration (DXVA). These pixels do not take up the majority of the image, just what seems to be less than 10 random seperate pixels per frame. This happens on both my CRT monitor (via VGA connection) and DVI connection to Projector.

    I know this happens when using DXVA, because it happens when this option is 'on' in Theatertek (default setting), and when turned on in PowerDVD ('off' by default). This flickering does not happen when hardware-acceleration is turned 'off', but I'm concerned about the extra CPU usage.

    I have the latest Radeon drivers, latest DirectX drivers, latest XP drivers and latest motherboard BIOS.
    The Radeon and motherboard are not overclocked.

    Please Help!!!

    Marc.



    my system:
    ---
    ATI Radeon 9600-XT
    Asus P4P800-Deluxe Motherboard
    Corsair TwinX 3200LL (Total 512MB) Memory
    Windows XP
     
  2. KraGorn

    KraGorn
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    Not something I've seen I'm afraid.

    If you're concerned about CPU usage and have XP you can run the performance monitor to see what headroom you have, on my AMD 2000+ TT uses less than 20% CPU playing a DVD with hardware acceleration. Not sure if the PQ is lower with software-only decoding.
     
  3. mholgate

    mholgate
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    ok, I've just installed some games and directx/opengl benchmarking software, and screen corruption is much worse!

    I think I have a faulty card.
    I'm planning on installing alternative drivers just to see for sure.

    Marc.
     
  4. Jeff

    Jeff
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    I have seen something very similar to this, it's caused by the Radeon card overheating. If you use Powerstrip you try setting the engine clock lower by about 10%. If you set it too low it won't work anymore so don't go beyond the 10%.
     
  5. mholgate

    mholgate
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    >try setting the engine clock lower by about 10%

    Jeff,
    I've just tried this - no change!

    What do you think? Faulty card?

    Thanks anyway,

    Marc.
     
  6. Acecross

    Acecross
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    I had a similar problem with a 9800SE. Funny artifacts in games etc. Actually returned the card as I thought it was faulty. Got the new one and same thing happend!
    I fixed it by doing a fresh install of the newest graphics card drivers.
    However, using hardware acceleration in powerdvd still causes the screen to corrupt, so don't know what it is.

    Tim
     

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