dikkiedirk Posted January 30, 2016 Author Share Posted January 30, 2016 After trying several patches, possibly all wrong I have come to the conclusion that it is not possible to get brightness control working on this laptop or I am on the wrong track. Another possibility is that I have no expertise to solve this problem. So far the patches I tried were all done in the DSDT, but shouldn't they be done to SSDT-2? Because there I find PEGP.DGFX, BCM, BQL and BCL and LCD. IF so, can anyone of you analyse this SSDT-2 an possibly patch it? ACPI.zip Link to comment Share on other sites More sharing options...
H4cktosh Posted December 26, 2016 Share Posted December 26, 2016 Can you post your DSDT and extracted IOReg? This may be due to missing or incorrect PNLF device attached to the discrete GPU in the DSDT. It can easily be added if required. It'll look something like this: Device (PNLF) { Name (_ADR, Zero) // _ADR: Address Name (_HID, EisaId ("APP0002")) // _HID: Hardware ID Name (_CID, "backlight") // _CID: Compatible ID Name (_UID, 0x0F) // _UID: Unique ID Name (_STA, 0x0B) // _STA: Status ... You'll find details of a similar (but probably not entirely identical) situation here. hi greeting i have this problem i have attached my patched dsdt and ioreg file please help me if u can DSDT - Ioreg.zip Link to comment Share on other sites More sharing options...
Administrators Bronxteck Posted December 26, 2016 Administrators Share Posted December 26, 2016 if using clover try adding PNLF acpi patch and SetIntelBacklight under devices you can use cloverconfigurator.app Link to comment Share on other sites More sharing options...
H4cktosh Posted December 27, 2016 Share Posted December 27, 2016 i did this but nothing changed Link to comment Share on other sites More sharing options...
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