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    SubjectRe: Box freezes if I enable "AMD 76x native power management"

    On Sat, Feb 22, 2003 at 11:53:29AM -0700, John W. M. Stevens wrote:
    > > Starting from 2.4.20 until now (including 2.4.21-pre4 and 2.4.21-pre4-ac5",
    > > whenever I enable "AMD 76x native power management" in my kernel config, I get
    > > kernel that hangs at boot after reporting elevator stuff about my IDE drives.
    > > Is anybody interested?
    > I am. This sounds suspiciously like the bug I reported.


    > But you haven't given quite enough information for me to compare. Can
    > you send:
    > 1) Exact Mother board (Tyan what? Tiger MPX 2466N . . . ?)

    Tyan Tiger MP (bios v1.03)

    > 2) Do you have DMA turned on for your IDE drives?

    Yes. Tried to boot with "ide=nodma". It hung too, but
    first emitted about set_drive_speed_blah: ... error messages.

    > 3) Are you enabling the AMD chip support for IDE?

    Yes. I tried to disable "AMD Viper" IDE support in kernel,
    but that did not help.

    > . . . and anything else you can find out about the box?

    Well, dual cpu athlon 1700+, 1G RAM. 2 IDE disks on primary channel.
    Geforce3 video card. Some cheap cmpci sound board.
    That's it.

    > Most importantly . . . does the problem go away if you turn off DMA
    > support for IDE?


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