- Jan 25, 2014
- Haswell i7
- Classic Mac
- Mobile Phone
Make sure you don't have both ACPIBacklight.kext and IntelBacklight.kext installed.
Also, check that SIP is disabled.
I didn't install ACPIBacklight; only trying to use IntelBacklight. As far as SIP is concerned, my config has it as you can see in the attachment:
<key>RtVariables</key> <dict> <key>BooterConfig</key> <string>0x28</string> <key>CsrActiveConfig</key> <string>0x3</string> </dict>