Hi, I have installed 10.12 using guide from post #1 except trackpad prefpane and I got Wifi, sound, and graphic on QHD working fine. Then I tried to add some kexts and dsdt from post #25 + replace the VoodooPS2Controller with the latest one at Rehabman's bitbucket and got bluetooth, brightness, and touchscreen working. The touchpad menu on system preferences is now working but the gesture is not.
But then I restarted the laptop, and I can't boot (crossed circle at apple logo), then I restarted with verbose and this time it succeeded boot to the desktop (I don't do anything besides add -v). The problem is now the bluetooth, touchscreen, and USB mouse is not working. I thought my USB is not working as one of my USB flashdisk is not detected, but I noticed that the other flashdisk is detected by the system (USB3.0).
I've tried to fix it by re-installed the macOS, redo all the steps and got it working again. But then it happened again, tried to change the kexts and dsdt -> the problem is fixed -> but after several restart / shutdown, it happened again. It seems to appeared on random occasion as not all the restart produced same behavior. Is there anything I missed?