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Mackindows

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    Mackindows reacted to soumaxetuirk in GUIDE: How to Fix Brightness hotkeys in DSDT   
    If you have a working Brightness Slider and you might be using Brightness slider or manual hotkeys to control brightness then this guide may help you to use your Native hotkeys of laptop.
     
    (All the Credits goes to @RehabMan     For OS-X-ACPI-Debug Kext and DSDT Patches.)
     
     
    This step assumes that you are using RehabMan's VoodooPS2Controller
    Install the kext: https://github.com/RehabMan/OS-X-ACPI-Debug Open MaciASL and click on patch.(Add rehab man repo) Apply "Add DSDT Debug Methods" and "Instrument EC Queries" that are under Brightness Fix. Save the DSDT and restart Look in Syslog as you press the key corresponding to brightness to determine which _QXX methods handle the keys Then patch DSDT: into method label _Q1D replace_content begin // Brightness Down\n Notify(\_SB.PCI0.LPCB.PS2M, 0x0205)\n Notify(\_SB.PCI0.LPCB.PS2M, 0x0285)\n end; into method label _Q1C replace_content begin // Brightness Up\n Notify(\_SB.PCI0.LPCB.PS2M, 0x0206)\n Notify(\_SB.PCI0.LPCB.PS2M, 0x0286)\n end; Change the variable _Q1D/_Q1C as per the log. 

    7. Try compiling and check if it generates errors
    8. If it does, then change the PS2M to PS2X according to the one found in your DSDT
    9. Save and place the compiled DSDT.
    10. Now you should see that you have your corresponding keys to change your brightness 
     
     
     FOR  more detail and Queries,Check Out original Post of @RehabMan Here;
    http://www.insanelym...18#entry1997112
    Get Latest Version of  OS-X-ACPI-Debug kext here:
    https://bitbucket.org/RehabMan/os-x-acpi-debug/downloads
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