https://bugzilla.kernel.org/show_bug.cgi?id=21322





--- Comment #16 from Zhang Rui <rui.zh...@intel.com>  2010-11-03 02:55:41 ---
the dmesg in comment #13 and #14 are got in the same boot, right?

in comment #13:
[ACPI Debug]  String [0x11] "Local0 and Local1"
[ACPI Debug]  Integer 0x00000001
[ACPI Debug]  Integer 0x00000000
[ACPI Debug]  String [0x04] "BATO"
[ACPI Debug]  Integer 0x00000000

in comment #14:
[ACPI Debug]  String [0x11] "Local0 and Local1"
[ACPI Debug]  Integer 0x00000001
[ACPI Debug]  Integer 0x00000000
[ACPI Debug]  String [0x04] "BATO"
[ACPI Debug]  Integer 0x00000002

Only when BAT0 equals 0x02, there is an AC notification when power cord is
plugged, thus user space detects this event.

I suspect this is because EC report bogus AC status when AC is plugged. which
means this is actually an EC bug, and it's not a duplicate of 
http://forum.sabayon.org/viewtopic.php?f=56&t=15873

Chris,
could you please redo the test, but change step 5 to "plug and unplug the AC",
i.e. run "dmesg -c" before the AC is plugged this time?

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