kaspar Posted January 27, 2016 Share Posted January 27, 2016 hi! i installed Yosemite 10.10.1 with this Jake Lo's method .after installing the kexts and using this DSTD (E6420/E6520 Optimus Disabled = DSDT-NVS.aml ; uncheck Optimus in BIOS) screen goes black. i can only get picture with nv_disable=1. Optimus is disabled. I need help. Intel Core i5 2520M (integrated Intel HD Graphics 3000) 8 Gb RAM NVIDIA NVS 4200M HiRes 1600x900 LCD WIFI - Qualcomm Atheros AR3011 (not working yet, using WIFI stick) bios A22 Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted January 27, 2016 Moderators Share Posted January 27, 2016 Replace DSDT with this by Wern. Rename it to DSDT.aml Link to comment Share on other sites More sharing options...
kaspar Posted January 28, 2016 Author Share Posted January 28, 2016 hi thank u for your answer.after using this DSDT (first version?) there's no longer audio and brightness controls are gone.i copied it into ./Extra folder, should i do something else with it? Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted January 28, 2016 Moderators Share Posted January 28, 2016 Try this, patched Wern's DSDT with audio layout-id to 0x0C. Replace and rename as DSDT.aml dsdt-wern.aml.zip 1 Link to comment Share on other sites More sharing options...
kaspar Posted January 29, 2016 Author Share Posted January 29, 2016 thank u for the Wern's DSDT, it got audio working. Brightness still not working... but at moment it's not a issue - i found free soft from AppStore - Brightness Slider what allows to control brightness. And also the BrightnessFix works... Now i have to get internal WIFI card working... any ideas? Link to comment Share on other sites More sharing options...
kaspar Posted January 29, 2016 Author Share Posted January 29, 2016 And if i want to upgrade to 10.10.5 is there any problems? i will try to install El Capitan to another drive today, any good tutorials? Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted January 29, 2016 Moderators Share Posted January 29, 2016 You should have no issue upgrading to 10.10.5 with combo update. Make sure to add nullcpupowermanagement to /extra/extensions prior to the update as stated in my guide. Then install the updated files and then remove NullCPU... If you want to stick with Chameleon loader when installing El Capitan, this is a good guide, just use your current /Extra folder as bootpack. Only significant change is that you need the Enoch branch of Chameleon and SIP disabled, all covered in Hervé's guide. Otherwise, I have a Clover guide for El Capitan, use the E6420 bootpack but replace DSDT with your current DSDT. Link to comment Share on other sites More sharing options...
kaspar Posted February 17, 2016 Author Share Posted February 17, 2016 hmm, i have a problem with sound.... it seems that it's too quite compared to how this machine works with Win10. any ideas how to solve the low level? Link to comment Share on other sites More sharing options...
Administrators Hervé Posted February 17, 2016 Administrators Share Posted February 17, 2016 Patched AppleHDA often brings lower max volume than VoodooHDA I'm afraid. Link to comment Share on other sites More sharing options...
kaspar Posted February 19, 2016 Author Share Posted February 19, 2016 so i have to uninstall appleHDA and install Voodoo insteed? so this is the AppleHDA.kext in System/Library/Extensions ? Link to comment Share on other sites More sharing options...
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