i am using asus k56cm, and have installed yosemite 10.10, i installed elan kext ver3.8.5 and also v4, but both have the problems:
In the login screen, i double click on user symbol but nothing happen, i must press the left button
When i use my laptop for a while, about 30mins, i have a problem with the draging function, i can drag item but i can not release them. After logging off, or shutting down, or restarting, it works normally