adampigg Top Student
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ACPI not compliant with the specification


In ACPI, the DSW method is documented as requiring 3 paramters, but on this laptop, with the latest BIOS, the ACPI appears to expect only 1 parameter.  This causes problems with the linux kernel ACPI implementation. See


The full problem is logged here:


Could a HP engineer provide feedback?  What does windows do?  What is the expected behaviour? Is it possible to get a new BIOS to fix this?


Another HP model is also listed in the bug report with the same behaviour.



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