It is an Acer problem. Here is a fix that worked for me.
Reboot and hold F2. You'll be in BIOS.
Under Main, go to Touchpad.
It will be on Advanced. You should change it to Basic.
Save changes and exit.
Your touchpad should work.
--
You received this bug notification because you are a member of
Downloaded and installed VirtualBox 5.0.14 and reinstalled linux
headers and all is working
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1540483
Title:
virtualbox-guest-dkms 4.3.36-dfsg-1+deb8u1ub
Public bug reported:
Virtualbox won't run and updates crash
ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: virtualbox-guest-dkms 4.3.36-dfsg-1+deb8u1ubuntu1.14.04.1
ProcVersionSignature: Ubuntu 3.13.0-49.83-generic 3.13.11-ckt17
Uname: Linux 3.13.0-49-generic x86_64
ApportVersion: 2.14