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DSDT for Acer Aspire 6920G


DPyro
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Ok, I think I figured out what BQC is reading the ACPI spec:

 

B.5.4 _BQC (Brightness Query Current level)

This method returns the current brightness level of a built-in display output device.

Arguments:

None

Return Value:

An Integer containing the current brightness level (must be one of the values returned from the _BCL method)

 

So it wants to return a value when the brightness has been changed.

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