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3D issues with Athlon X2, x64, 6600LE, and dual monitors

Discussion in 'Nvidia' started by stanmuffin, Mar 28, 2006.

  1. stanmuffin

    stanmuffin Guest

    Two development workstations at my company show the same symptoms.
    They are configured as follows:

    Windows XP x64 Edition
    Athlon X2 3800+
    ABIT AN8 (nForce4 Ultra) motherboard
    Albatron 6600LE 256MB PCIe video card
    1x hp pavilion f1903 LCD monitor on DVI-D
    1x Samsung Syncmaster 955DF CRT monitor on VGA
    84.21 WHQL ForceWare driver
    Running in DualView mode

    Often times the display stutters when in accelerated mode, by which I
    mean objects will move forward, then backward, then forward again
    quickly. It's easily noticeable in the OpenGL screensavers included in
    Windows. It also affects transition effects in Picasa.

    I suspect it may be a bug in the x64 driver since none of our users
    with 32-bit XP have complained about the problem.

    Also, if 4x AA + 8x AF is turned on in the video driver, running any of
    the built-in OpenGL screen savers will instantly hard-lock the PC. But
    disabling one monitor seems to circumvent that problem.

    Are there any known issues with dual monitors on dual-core X64 systems?
    Do I perhaps have a pair of bad Albatron video cards?
    stanmuffin, Mar 28, 2006
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  2. stanmuffin

    stanmuffin Guest

    Update: I tried trading the Albatron 6600LE with a Gigabyte 6600 from
    another PC. The problem persists. But with a Biostar 6500, it worked

    I doubt all three 6600 cards are bad. I'm more inclined to think this
    is a bug in the x64 NV43 driver. That or a compatiblity problem with
    the ABIT AN8 motherboard.
    stanmuffin, Mar 30, 2006
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