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    SubjectProblem with i820 AGP patch
    Your patch to add AGP support for i820 chipset doesn't work for me, if I
    load agpgart module with agp_try_unsupported=1 I get:

    Linux agpgart interface v0.99 (c) Jeff Hartmann
    agpgart: Maximum main memory to use for agp memory: 262M
    agpgart: Trying generic Intel routines for device id: 2501
    agpgart: AGP aperture is 256M @ 0xd0000000

    That device id is different from the corresponding line in apg.h:174
    #define PCI_DEVICE_ID_INTEL_820_0 0x2500

    I tried to change that line in:
    #define PCI_DEVICE_ID_INTEL_820_0 0x2501

    And it worked! But I don't know why the id for your chip is different
    from mine...

    My motherboard is an Asus P3C2000 with a P3 500 running kernel 2.4.14

    I've also another problem (I think AGP related) with DRI/DRM ang XFree
    4.1.0, but I'm still working on it.
    If I try running some OpenGL app with more than 256Mb of RAM, the system hangs
    (need hard reset, no SysReq works). This happens with 2.4.13 and 2.4.14,
    before I hadn't tried since I had only 128Mb...)
    Someone can please tell me if this problem has something to do with
    having a "Maximum main memory to use for agp memory" value grater than
    AGP aperture value ?

    Daniele Venzano
    Senior member of the Linux User Group Genova, Italy (LUGGe)

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