[lkml]   [2007]   [Oct]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: ARPM shutdown oops (Re: [stable] [patch 09/12] Fix SMP poweroff hangs)

    On Wed, 10 Oct 2007, Kevin wrote:
    > The last kernel I used was 6.2.22 the "dmesg" the file is attached:
    > dmesg 2.6.22 line 158 > apm: overridden by ACPI.
    > dmesg, APM on, has no line > apm: overridden by ACPI.

    Ok, this is the real reason.

    The APM code does:

    if (PM_IS_ACTIVE()) {
    printk(KERN_NOTICE "apm: overridden by ACPI.\n");
    apm_info.disabled = 1;
    return -ENODEV;

    and in previous kernels that would notice that you have ACPI enabled, and
    APM gets shut out, and you never see your buggy APM BIOS.

    In 2.6.23, this apparently doesn't happen for some reason.

    And I think I see the problem: it's a config change. You don't have
    PM_LEGACY enabled. Your config file diff shows:

    +# CONFIG_PM_LEGACY is not set

    I suspect we should make CONFIG_APM either depend on, or select,
    PM_LEGACY. But as far as I can see, nothing has actually changed in this
    area in the kernel, and this bug has been there before - just your config
    change made it appear.

    Rafael? Stephen? Opinions? I'd think that making APM depend on
    CONFIG_PM_LEGACY is the right thing to do these days..

    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2007-10-11 17:41    [W:0.020 / U:38.916 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site