[ubuntu] Touchpad of asus notebook e202sa does not work at ubuntu 14.04

Hi.
Sorry for my bad English. I'm not native at English.
Some days ago, I bought an asus notebook(e202sa) and installed ubuntu 14.04 LTS version.
When I was installing the ubuntu, my touchpad worked well.
But after I finished installing and reboot It does not work.
I searched some tips but all does not work.
Here's what I've tried to solve the problem.

1. I pressed fn key and f9 key simultaneously. It is combination to toggle activation the touchpad.

2. I have followed as outlined in the link below.
http://askubuntu.com/questions/50682...ad-not-working

but, It did not work. Followings are error message at install focaltech-dkms

Selecting previously unselected package focaltech-dkms.
(데이터베이스 읽는중 ...현재 197295개의 파일과 디렉터리가 설치되어 있습니다.)
Preparing to unpack .../focaltech-dkms_1.5~trusty1_all.deb ...
Unpacking focaltech-dkms (1.5~trusty1) ...
focaltech-dkms (1.5~trusty1) 설정하는 중입니다 ...
Loading new focaltech-1.5~trusty1 DKMS files...
First Installation: checking all keels...
Building only for 4.2.0-35-generic
Building for architecture x86_64
Building initial module for 4.2.0-35-generic
ERROR: Caot create report: [Ero 17] File exists: '/var/crash/focaltech-dkms.0.crash'
Error! Bad retu status for module build on keel: 4.2.0-35-generic (x86_64)
Consult /var/lib/dkms/focaltech/1.5~trusty1/build/make.log for more information.
jtchoi@jtchoi-E202SA:~/다운로드$

3. I tried to install xserver-xorg-input-synaptics but I couldn't install it.

Followings are some of the error msg.
xserver-xorg-input-synaptics : 의존: xorg-input-abi-20
의존: xserver-xorg-core (>= 2:1.14.99.902)

It may be caused by dependency problem.

Followings are some information about my problem.

jtchoi@jtchoi-E202SA:~/다운로드$ xinput list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Logitech USB Optical Mouse id=9 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ Video Bus id=7 [slave keyboard (3)]
↳ Sleep Button id=8 [slave keyboard (3)]
↳ USB2.0 VGA UVC WebCam id=10 [slave keyboard (3)]
↳ Asus WMI hotkeys id=11 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=12 [slave keyboard (3)]
jtchoi@jtchoi-E202SA:~/다운로드$ uname -a
Linux jtchoi-E202SA 4.2.0-35-generic #40~14.04.1-Ubuntu SMP Fri Mar 18 16:37:35 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

If there's some one know about it, please help me.
Thanks for reading.