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    SubjectRe: [PATCH] updated version of Jens' SATA suspend-to-ram patch
    Bad news regarding sata suspend/resume, thought it may not
    specifically be a problem with the patch but something more
    fundamental.

    I have a tecra M3 which uses the i915m and ich6m chips and
    as such should be very similar to various dells and ibms which
    this patch works great on.

    However, for my particular machine, the step of putting the
    sata controller pci device into D3 locks the machine up
    completely. If I skip this part of the suspend process, it
    doesn't lock up. but something is clearly not right with it
    as the hd will fail to wake up if I leave it suspended too
    long (if it's suspended and then quickly resumed like this,
    it seems to work). Putting the PCI device into D1 leads to
    problems after resume regardless of the amount of time
    suspended.

    I disassembled the acpi DSDT and checked it for errors but
    didn't find anything of note, so I'm not sure why it does
    this. It's obviously not a fundamental problem because windows
    can suspend fine on it, but there's clearly a piece of the
    puzzle missing. It's all very frustrating because this is
    the only part of the machine that can't handle suspending yet.

    I tried the reformatted patch with and without Jens' workaround
    but the behavour is unchanged.

    --phil
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