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    SubjectRe: EC interrupt mode by default breaks power button and lid button
    * Yu, Luming <luming.yu@intel.com> [2006-02-07 13:33]:
    > >> Please don't revert that patch, and test kernel parameter ec_intr=0
    > >
    > >Yes, boot option ec_initr=0 helps power/lid buttons. (Tested with
    > >yesterdays newest kernel from linus' tree.)
    >
    > Any difference with ec_initr=1 with this kernel ?

    No. Neither powerbutton nor lidbutton works with ec_initr=1.

    > If pressing power button, can you see acpi interrupt increases?

    Where do I find this? Do you mean interrupt 9 "IO-APIC-edge acpi" in
    /proc/interrupts?

    With ec_initr=1 I don't see that interrupt 9 increases.

    --- tmp/ec1/interrupts 2006-02-07 14:31:54.000000000 +0100
    +++ tmp/ec1/interrupts-after-powerbutton 2006-02-07 14:33:07.000000000 +0100
    @@ -1,10 +1,10 @@
    CPU0
    - 0: 42181 IO-APIC-edge timer
    - 1: 446 IO-APIC-edge i8042
    + 0: 60423 IO-APIC-edge timer
    + 1: 676 IO-APIC-edge i8042
    2: 0 XT-PIC cascade
    9: 1 IO-APIC-edge acpi
    - 12: 2177 IO-APIC-edge i8042
    - 14: 6494 IO-APIC-edge ide0
    + 12: 3221 IO-APIC-edge i8042
    + 14: 6547 IO-APIC-edge ide0
    16: 0 IO-APIC-level uhci_hcd:usb5, i915@pci:0000:00:02.0
    17: 1 IO-APIC-level Intel ICH6, ipw2200
    18: 0 IO-APIC-level uhci_hcd:usb4
    @@ -12,6 +12,6 @@
    20: 0 IO-APIC-level yenta, Intel ICH6 Modem
    23: 0 IO-APIC-level ehci_hcd:usb1, uhci_hcd:usb2
    NMI: 0
    -LOC: 42140
    +LOC: 60383
    ERR: 0
    MIS: 0

    With ec_initr=1 /proc/acpi/button/lid/LID0/state seems to work sane:

    gps@medusa:~$ cat /proc/acpi/button/lid/LID0/state # lid opened
    state: open
    gps@medusa:~$ sleep 5 && cat /proc/acpi/button/lid/LID0/state # closing lid quicker than 5 seconds
    state: closed

    With ec_initr=0 (and acpid *stopped*) I see interrupt 9 increases.

    --- tmp/ec0/acpid-off/interrupts 2006-02-07 14:40:55.000000000 +0100
    +++ tmp/ec0/acpid-off/interrupts-after-powerbutton 2006-02-07 14:42:13.000000000 +0100
    @@ -1,10 +1,10 @@
    CPU0
    - 0: 27910 IO-APIC-edge timer
    - 1: 375 IO-APIC-edge i8042
    + 0: 47228 IO-APIC-edge timer
    + 1: 599 IO-APIC-edge i8042
    2: 0 XT-PIC cascade
    - 9: 27 IO-APIC-edge acpi
    - 12: 755 IO-APIC-edge i8042
    - 14: 6259 IO-APIC-edge ide0
    + 9: 28 IO-APIC-edge acpi
    + 12: 2105 IO-APIC-edge i8042
    + 14: 6465 IO-APIC-edge ide0
    16: 0 IO-APIC-level uhci_hcd:usb5, i915@pci:0000:00:02.0
    17: 1 IO-APIC-level Intel ICH6, ipw2200
    18: 0 IO-APIC-level uhci_hcd:usb4
    @@ -12,6 +12,6 @@
    20: 0 IO-APIC-level yenta, Intel ICH6 Modem
    23: 0 IO-APIC-level ehci_hcd:usb1, uhci_hcd:usb2
    NMI: 0
    -LOC: 27872
    +LOC: 47191
    ERR: 0
    MIS: 0
    With ec_initr=0 and acpid *started* I see this change in /var/log/acpid

    --- tmp/ec0/acpid-after-boot 2006-02-07 14:20:21.000000000 +0100
    +++ tmp/ec0/acpid-after-powerbutton-and-lid-switch 2006-02-07 15:01:50.000000000 +0100
    @@ -327,3 +327,20 @@
    [Tue Feb 7 14:13:41 2006] exiting
    [Tue Feb 7 14:18:44 2006] starting up
    [Tue Feb 7 14:18:44 2006] 8 rules loaded
    +[Tue Feb 7 14:20:25 2006] received event "button/power PWRF 00000080 00000001"
    +[Tue Feb 7 14:20:25 2006] executing action "/etc/acpi/actions/my_powerbtn.sh"
    +[Tue Feb 7 14:20:25 2006] BEGIN HANDLER MESSAGES
    +[Tue Feb 7 14:20:37 2006] END HANDLER MESSAGES
    +[Tue Feb 7 14:20:37 2006] action exited with status 0
    +[Tue Feb 7 14:20:37 2006] completed event "button/power PWRF 00000080 00000001"
    +[Tue Feb 7 14:23:20 2006] received event "button/lid LID0 00000080 00000001"
    +[Tue Feb 7 14:23:20 2006] executing action "/etc/acpi/actions/lm_lid.sh button/lid LID0 00000080 00000001"
    +[Tue Feb 7 14:23:20 2006] BEGIN HANDLER MESSAGES
    +[Tue Feb 7 14:23:20 2006] END HANDLER MESSAGES
    +[Tue Feb 7 14:23:20 2006] action exited with status 0
    +[Tue Feb 7 14:23:20 2006] executing action "/etc/acpi/actions/my_lid.sh button/lid LID0 00000080 00000001"
    +[Tue Feb 7 14:23:20 2006] BEGIN HANDLER MESSAGES
    +[Tue Feb 7 14:24:27 2006] END HANDLER MESSAGES
    +[Tue Feb 7 14:24:27 2006] action exited with status 0
    +[Tue Feb 7 14:24:27 2006] completed event "button/lid LID0 00000080 00000001"
    Hope this helps
    -- Gerhard
    -
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