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    SubjectRe: [2.6.17.8] noapic and /proc/acpi/event
    Len Brown wrote:
    > On Thursday 07 September 2006 14:52, Andreas Steinmetz wrote:
    >
    >>I do have a problem with a new laptop (Acer Ferrari 4006):
    >>
    >>It does suspend either to disk or to ram only when I do boot with
    >>"noapic". So far, so good.
    >
    >
    > Well no, that isn't so good either. You shouldn't need "noapic"
    > for anything, either normal operation or suspend/resume.
    >
    > Do ACPI events work properly w/o noapic if you don't suspend/resume?
    >

    Yes, they do, that's how I tested.

    > You should be able to kill acpid, and cat /proc/acpi/event
    > and open/close your lid and watch events appear --
    > same for power button.
    > You should also be able to see the acpi line in /proc/interrupts
    > increment for each of these events.
    >
    >
    >>If, however, I do boot with "noapic" no events are delivered to
    >>/proc/acpi/event so lid switch and power button can't be used to suspend
    >>anymore.
    >
    >
    > Does noapic work properly before the suspend?
    > (test the same way as w/o noapic above)
    >

    No events, no ACPI interrupts.

    >
    >>The strange thing is, that at least in /proc/acpi/button/lid/LID/state I
    >>can view the lid switch state.
    >
    >
    > The problem with your system is that it isn't getting ACPI interrupts.
    > The lid state in /proc is immune to that problem because when
    > you read that file Linux asks the hardware for its state on demand.
    >

    I see.

    > cheers,
    > -Len
    >


    --
    Andreas Steinmetz SPAMmers use robotrap@domdv.de
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