https://bugzilla.kernel.org/show_bug.cgi?id=15204





--- Comment #29 from Zhang Rui <rui.zh...@intel.com>  2010-06-22 09:01:36 ---
Created an attachment (id=26895)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=26895)
custom IBCM method

please
1. build a kernel later than 2.6.33 with CONFIG_ACPI_DEBUG set.
2. reboot with boot option "acpi.debug_level=0x2002 acpi.debug_layer=0xffffffff
log_buf_len=1M"
3. run "cat IBCM.aml > /sys/kernel/debug/acpi/custom_method"
4. try to change the backlight
5 attach the dmesg output.

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