http://bugzilla.kernel.org/show_bug.cgi?id=9915





------- Comment #47 from [EMAIL PROTECTED]  2008-05-14 01:44 -------
At the ACPI video driver's point of view, there is no difference to set the
brightness level to 1 or to 15.
Both of them call into AML code and invoke
                    Method (EC0B, 1, Serialized)
                    {
                        EC83 (0x0B, Arg0)
                        Return (0x00)
                    }
I don;t know why it works when setting the brightness level to 0~9 and fails
when setting it to 10~20.
I don;t know how to debug further and IMO we should close it and mark it as
WILL_NOT_FIX.
What do you think, len?


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