http://bugzilla.kernel.org/show_bug.cgi?id=9902


[EMAIL PROTECTED] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO




------- Comment #2 from [EMAIL PROTECTED]  2008-02-18 18:39 -------
hmm, can the backlight sys I/F, i.e. /sys/class/backlight/acpi_video0/..., work
for you?
please set CONFIG_ACPI_DEBUG, and do the following test:
1. dmesg -c;
2. echo 0x40 > /sys/module/acpi/parameters/debug_layer
3. echo 0x8800001f > /sys/module/acpi/parameters/debug_level
4. press the fn-f7 and fn-f8 for one time.
5. attach the dmesg output.


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