Very Computer

1. agp problem: cannot write combine agp aperture

I have an MSI 8831 video card (geforce 2) and a FIC AD11 mom board (AMD
761). I'm running Slackware 8.0 (XFree86 4.1.0) with a 2.4.12 kernel
that I compiled (mtrr support is compiled in). I'm using the nvidia
1.0-1541 driver.

When agpgart isn't compiled in, after I startx "dmesg | grep NVRM" yields:
        NVRM: loading NVIDIA kernel module version 1.0-1541
        NVRM: *** Cannot WriteCombine the AGP Aperture

"cat /proc/nv/card0" yields:
        ----- Driver Info -----
        NVRM Version: 1.0-1541
        ------ Card Info ------
        Model:        GeForce2 GTS
        IRQ:          10
        Video BIOS:   03.15.01.00
        ------ AGP Info -------
        AGP status:   Disabled
        AGP Driver:
        Bridge:       Generic AMD
        SBA:          Supported [disabled]
        FW:           Supported [disabled]
        Rates:        4x 2x 1x  [-]
        Registers:    0x0f000217:0x00000000

When agpgart is compiled in, after I startx, "dmesg | grep agpgart" yields:
        Linux agpgart interface v0.99 (c) Jeff Hartmann
        agpgart: Maximum main memory to use for agp memory: 203M
        agpgart: Detected AMD 761 chipset

and "dmesg | grep NVRM" yields:
        NVRM: loading NVIDIA kernel module version 1.0-1541
        NVRM: AGPGART: unknown chipset
        NVRM: AGPGART: unable to set MTRR write-combining

        NVRM: AGPGART: aperture mapped from 0xd0000000 to 0xd598f000
        NVRM: AGPGART: mode 4x
        NVRM: AGPGART: allocated 16 pages

and /proc/nv/card0 says:
        ...
        ------ AGP Info -------
        AGP status:   Enabled
        AGP Driver:   AGPGART
        Bridge:       Generic AMD
        SBA:          Supported [disabled]
        FW:           Supported [disabled]
        Rates:        4x 2x 1x  [4x]
        Registers:    0x0f000217:0x00000104

Does anyone have any ideas? Is this just a configuration problem? Am I
having a hardware problem?

Much thanks,
Jason

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