https://bugzilla.kernel.org/show_bug.cgi?id=24002





--- Comment #16 from Zhang Rui <rui.zh...@intel.com>  2011-04-01 06:41:43 ---
please set CONFIG_ACPI_DEBUG=y, uncomment the "/* #define DEBUG */" line in
drivers/acpi/ec.c and rebuild the kernel.
then run the following commands:
1. echo 0xffffffff > /sys/modules/acpi/parameters/trace_debug_layer
2. echo 0xffffffff > /sys/modules/acpi/parameters/trace_debug_level
3. echo UPBS > /sys/modules/acpi/parameters/trace_method_name
4. echo 1 > /sys/modules/acpi/parameters/trace_debug_layer
5. cat /proc/acpi/battery/BAT1/info
6. attach the dmesg output

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