HI, I'm new here,
I saw this thread but unfortunately I didn't understand it very well :/
I have the my graphic card recognized with QE/CI Fully functional on OS X Mavericks.
My laptop is Lenovo Ideapad Z510:
Intel core i5 4200M
Intel HD 4600
But the problem is that the screen is a way too bright which is hurting my eyes at night :/
IF someone can help me out with that thread.
or just tell me something else that is working I hope you can help me, Thanks for reading
Haswell Brigthness Fix:
You will need to extract all DSDT/SSDT from Linux. Your GFX0 device is probably in one of the SSDTs not DSDT and to get a proper disassembly of your DSDT (and the SSDT that has GFX0) you will need all of them. They are available in /sys/firmware/acpi/tables and /sys/firmware/acpi/tables/dynamic.
Place all SSDT/DSDT in a single directory and use a recent build of iasl to disassemble:
cd "to directory where you placed all SSDT/DSDT"
iasl -da *.aml
Then search the resulting *.dsl so you know where GFX0 is defined.
Laptop repo: https://github.com/R...ptop-DSDT-Patch
Apply: "Rename GFX0 to IGPU" (to both DSDT and the SSDT that has your GFX0 device)
Apply: "Brightness Fix (Haswell)" to SSDT with GFX0
Place patched DSDT.aml in /Extra/dsdt.aml. Place patched SSDT in /Extra/ssdt-1.aml (assuming you have already generated SSDT.aml for CPU)
Result: Working brightness slider in SysPrefs->Displays (mapping of keyboard keys is a separate issue), possible LID sleep, and IGPU power management.