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    Subject2.5.51 - Strange UP APIC / 8139too / USB issues
    Hi all.

    I have a system with an Abit AT7 motherboard: VIA KT333, single Athlon,
    512M RAM, onboard RTL8139 network, USB, USB2, 1394. *NO* onboard PS/2
    keyboard or mouse ports.
    Other: IDE HD, CD-RW, and DVD. Radeon 8500DV (will try getting that
    working later :)

    I have used the system successfully with 2.4, and have been trying to
    get 2.5 to work. Until now, I haven't been able to get the USB keyboard
    to work. It is initialized by the BIOS, and is usable by GRUB for
    selecting boot images.

    I finally found the culprit - "Local APIC Support on Uniprocessors" and
    "IO-APIC on uniprocessors". If both items are enabled, the network
    functions, but USB doesn't work. If not both are enabled (neither, or
    Local APIC but not IO-APIC), then the USB system works, but the network
    doesn't. :(

    I am not using modules.

    these are the only differences in .config:

    multimedia linux-2.5.51 # diff -u working_network
    --- working_network 2002-12-11 15:43:31.000000000 -0500
    +++ working_usbkeyboard_config3 2002-12-11 15:15:53.000000000 -0500
    @@ -63,9 +63,8 @@
    # CONFIG_SMP is not set
    # CONFIG_PREEMPT is not set
    +# CONFIG_X86_UP_IOAPIC is not set
    # CONFIG_X86_MCE_P4THERMAL is not set
    I can send complete configs, lspci / lsusb / whatever else anyone wants.

    - Steve

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