Lenovo Thinkpad Twist s230u touchpad issue in ubuntu 14.04

Touchpad & Trackpad sometimes not working when the Ubuntu is boot. However when i plugged in usb mouse, it works fine.

Steps:
1. Run the following command in terminal:
sudo gedit /etc/default/grub

2. The GRUB configuration file should open. Locate the following line:
GRUB_CMDLINE_LINUX=" "

3. Add this into the parameters:
i8042.nomux=1 locale=fr_FR i8042.reset

4. The final line should look like this:
GRUB_CMDLINE_LINUX="i8042.nomux=1 locale=fr_FR i8042.reset"

5. Save file and exit gedit.

6. Run the following command in terminal:
sudo update-grub

7.Let the grub.conf file get recreated, and then restart.

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This is a bug that spans across several Linux distros if not all and is present on laptops (not sure of desktops). From whatever I could gather it is experienced in the Toshiba Satellite L775D-S7135, and many of Compaq and Lenovo laptop models.

credit: http://forums.linuxmint.com/viewtopic.php?f=46&t=41200