How to make keyboard backlight work?

[mihael]

If I understand correctly... (abort in ECRD at Store(DerefOf(Arg0)...) where Arg0 is RefOf(CMDR))...

How is CMDR defined?

Yes you understand correctly, thanks!

CMDR defined as:

CMDR,   8,

 

[RehabMan]

Yes you understand correctly, thanks!

CMDR defined as:

CMDR,   8,

But in what kind of OperationRegion?

It could be that OS X's ACPI implementation cannot deal with RefOf in this case. You may have to re-write the code without RefOf/DerefOf.

 

[mihael]

But in what kind of OperationRegion?

It could be that OS X's ACPI implementation cannot deal with RefOf in this case. You may have to re-write the code without RefOf/DerefOf.

The H_EC OperationRegion. I tried to re-write the code in those methods without RefOf/DerefOf but have no luck...

 

[RehabMan]

The H_EC OperationRegion. I tried to re-write the code in those methods without RefOf/DerefOf but have no luck...

You need to keep the same semantics but re-write the code without passing a ref. You will need to have a good understanding of ACPI/AML language.