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    SubjectRe: APM problem after 2.6.13.5
    Pekka Enberg wrote:
    > Hi Alessio,
    >
    > On 6/16/06, Alessio Sangalli <alesan@manoweb.com> wrote:
    >>>> if I enable "APM support" I get a freeze at the very beginning of the
    >>>> boot, without any explicit erro message, just after the PCI stuff. If
    >>>> you need a transcript of the messages at boot, let me know, I will have
    >>>> to write them by hand).
    >>>> 2.6.13.5 is ok. I need APM support to let the "Fn" key and the battery
    >>>> meter work!
    >
    > Pekka Enberg wrote:
    >>> There's a lot of changes between 2.6.13 and 2.6.14. It would be
    >>> helpful if you could narrow down the exact changeset that broke your
    >
    > On 6/16/06, Alessio Sangalli <alesan@manoweb.com> wrote:
    >> done:
    >>
    >> 4196c3af25d98204216a5d6c37ad2cb303a1f2bf is first bad commit
    >> diff-tree 4196c3af25d98204216a5d6c37ad2cb303a1f2bf (from
    >> 9092b20803e4b3b3a480592794a73030f17370b3)
    >> Author: Linus Torvalds <torvalds@g5.osdl.org>
    >> Date: Sun Oct 23 16:31:16 2005 -0700
    >>
    >> cardbus: limit IO windows to 256 bytes
    >>
    >> That's what we've always historically done, and bigger windows seem to
    >> confuse some cardbus bridges. Or something.
    >>
    >> Alan reports that this makes the ThinkPad 600x series work properly
    >> again: the 4kB IO window for some reason made IDE DMA not work, which
    >> makes IDE painfully slow even if it works after DMA timeouts.
    >>
    >> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
    >>
    >> :040000 040000 629d4d303048bffa610017e81e0e744bae08660d
    >> 33e154ffe96822d09f37ae2d433de5152216501b M drivers
    >>
    >>
    >> let me know any other test I should do to help find a solution to this
    >> problem, thank you!
    >
    > So reverting the above commit from git head makes your box boot again?
    > Linus, any thoughts?


    Yes, exactly. I can run 2.6.17-rc6 with only that commit reverted.

    The mahcine is a notebook COMPAQ Presario 800 Model 80XL4
    Pentium3@700MHz 256MB ram etc

    Thank you
    ciao
    Alessio Sangalli


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