I have noticed that my Trackpad work fine when charger Is plugged in and jumps at some point when on battery. I had ACPIbattrymanager.kext, when I removed it, it worked fine but my battery icon is gone and also second problem I face is with my display the brightness is is 70% only and it turns on/off when on login page and later it gets stable and last one is my laptop reboots when I done touch it for 10mins it reboots automatically.
1) Brightness
2) Screen on/off on login
3) Battery icon
4) Reboots when ideal
Please if you can help as you might know solution for most of the issue.
Thanks you for solving my Trackpad issue, I spent 3-4 months to patch it I could not get solution anywhere, but luckily I got to this page and you solved in in few hours .