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Hi, I did a pretty successful installation of Yosemite on the laptop in my signature. Yet, I have some problems, especially with the touchpad, some small problems with my audio (no sound after sleep, mic loop on start, output device not changing to headphones and back when plugging and unplugging the headphones). Specifications: Processor : Intel Core i5 3337U Graphics Processor(GPU) : Intel HD4000 and Nvidia Optimus GT710M with 1GB DDR3 VRAM Hard disk : SSD Kingston HyperX 128GB RAM : 4GB DDR3 / bus 1600 Wifi : Original AR9485 not work (Replaced by:BCM94322HM8L) LAN : Realtek (will update the model later) Audio : Realtek ALC270 USB 3.0 : Intel 7series/210 USB 3.0 Touchpad : Elan Touchpad v4 Webcam : HD Web Camera Card reader : Monitor: 15.6" 16:9 HD (1366x768) LED Backlight Optical Drive: Super-Multi DVD (Optional) Working List: Graphics (Intel HD4000) - Full Audio - (with some problems) WIFI (Replaced) LAN HDMI Sleep, Processor Speedsteps and Native power management. Fn Hotkeys USB works Disable turbo boost on battery Not working: Trackpad Multitouch (works but detected as mouse so no settings like accidental palm detection which really irritates me) GT630M Graphics Realtek CardReader Webcam I used various sources/guides when installing the system and I want to prepare a clean guide and also dsdt for my future installs. Now the system is very stable but I want to get rid of all unnecessary patches / kexts or tweaks I did and have a very clean system and also a guide for other people. I will post the way I installed together with the sources and I will also post a clean DSDT (exported from Linux) and my patched DSDT (from another similar system and which works great but I think it has some issues). 1. Install Niresh's Yosemite with "Backup Graphics" option enabled and with no boot loader. 2. Install Clover with UEFI and add the boot path option in BIOS. 3. Installed Elan Touchpad - Detected as trackpad 4. Installed kexts and DSDT from this archive http://www.hackintoshosx.com/files/file/4332-efi-k46cb-i5-3337u-yosemite-10101/ 5. Now almost everything works due to the patched DSDT (fan not at full speed all time, full graphics, correct battery status, cpu states, sleep) 6. After the patched DSDT my trackpad doesn't work anymore (even if I edited it to look exactly like the original one for the PS2M device.) 7. Also problems with no sound after sleep, microphone input on startup, no switch when plugging headphones. PS. Please help me organizing everything so any moderator feel free to edit my post and organize it better because I'm not good at this. I am looking for help,and I'm ready to help with any requirements experienced people have in order to make this ready for EDP. So let's start with the trackpad, the problem is that my kext is not loaded. I used the latest Elan + FocalTech kexts available here. Mar 4, 2015, 10:35:09 PM kernel[0]: VoodooPS2SynapticsTouchPad Version 1.8.13 loaded... Mar 4, 2015, 10:35:09 PM kernel[0]: VoodooPS2Trackpad: Identify TouchPad command returned incorrect byte 2 (of 3): 0x04 Mar 4, 2015, 10:35:09 PM kernel[0]: VoodooPS2Mouse Version 1.8.13 loaded... x552cl.ioreg.zip dsdts.zip