Will R200 sample in WDK6000 work when VidPN support changed toMMDMM_SUPPORT_TEST?

Discussion in 'Windows Vista Drivers' started by jerry lee, May 23, 2008.

  1. jerry lee

    jerry lee Guest

    In line 1887 of source file miniport.c, if changing the
    dwMMDMMSupportType from MMDMM_SUPPORT_XDDM_PARITY to
    MMDMM_SUPPORT_TEST, it seems that the built driver will light only
    one of two pixel in VGA monitor and the rest be black. If changed
    back to MMDMM_SUPPORT_XDDM_PARITY, then everything will be OK. I am
    using a Radeon 8500 with 64M DDR installed.

    Anyone encounter such probelm?
     
    jerry lee, May 23, 2008
    #1
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  2. jerry lee

    jerry lee Guest

    After some tracing work, It seems all of the 4 source mode IDs used in
    the VidPN test path are not included in correspoding XDDM version. Why
    DDK provide VidPN test in this way?
     
    jerry lee, May 23, 2008
    #2
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  3. jerry lee

    jerry lee Guest

    It turn out to a document fault in WDK 6000. The code path of
    MMDMM_SUPPORT_TEST follow the document in WDK 6000, but that part has
    been updated in WDK 6001.
     
    jerry lee, Jul 1, 2008
    #3
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