arhu Posted November 3, 2015 Author Share Posted November 3, 2015 When I copy AppleHDA_ALC255.kext to /System/Library/Extensions I have error like this The system extension “/System/Library/Extensions/AppleHDA_ALC255.kext†was installed improperly and cannot be used. Please try reinstalling it, or contact the product’s vendor for an update." Should I use easykext utility? Link to comment Share on other sites More sharing options...
Administrators Bronxteck Posted November 3, 2015 Administrators Share Posted November 3, 2015 that is because you have to correct the kext permissions that you dropped into S/L/E. but yeah i guess you can use a utility to install them instead Link to comment Share on other sites More sharing options...
arhu Posted November 3, 2015 Author Share Posted November 3, 2015 I removed them from S/L/E, rebuild cache with your commands and installed kexts with kext utility and than rebuild again, but after reboot (i didn't forget about config) I don't have sound. Link to comment Share on other sites More sharing options...
Administrators Bronxteck Posted November 3, 2015 Administrators Share Posted November 3, 2015 sometimes patched apple HDA audio takes a few reboots to kick in Link to comment Share on other sites More sharing options...
arhu Posted November 3, 2015 Author Share Posted November 3, 2015 I uninstalled VoodooHDA by removing VoodooHDA.kext from S/L/E is that right? Link to comment Share on other sites More sharing options...
Administrators Bronxteck Posted November 3, 2015 Administrators Share Posted November 3, 2015 yes also make sure you do not have a hda disabler kext in there Link to comment Share on other sites More sharing options...
arhu Posted November 9, 2015 Author Share Posted November 9, 2015 I have working DSDT, speedstep, battery and almost everything but battery lasts for not longer that 2h. When I was using windows 10 my battery lasts for about 4-5h (ati radeon was turned off). How to extend battery life? Link to comment Share on other sites More sharing options...
Administrators Hervé Posted November 19, 2015 Administrators Share Posted November 19, 2015 You may not have any GPU power management. Link to comment Share on other sites More sharing options...
arhu Posted November 22, 2015 Author Share Posted November 22, 2015 So what should i do? Link to comment Share on other sites More sharing options...
Recommended Posts