How can I disable touchpad while typing in ubuntu 14.04?

I want the touchpad to get disabled while typing.

Opening the system configuration and selecting "Pointing Devices" I can change only very basic settings, namely the primary and secondary button assignment, double click speed and cursor movement speed.

So, let's google...

I have found this. Further details about reasons or possible fixes are missing.

Some work-arounnds that I have found doesn't work for me. My system doesn't seem to load synaptics driver:

If type synclient I get Couldn't find synaptics properties. No synaptics driver loaded?.

I have also installed synaptiks, but at run it says that it can't find any touchpad.

Nevertheless, the basic functions of the touchpad work.

I don't know if this is relevant: my notebook is an Acer Aspire E 15 ES1-511-C18C and the Ubuntu version is, as I have said in the title, 14.04. If I run the app "Mouse and Touchpad", I can see that the device detected is "PS/2 Elantech Touchpad".

ajh@ANTONIO-ACER:~$ syndaemon 
ajh@ANTONIO-ACER:~$ killall syndaemon
syndaemon: proceso no encontrado
ajh@ANTONIO-ACER:~$ syndaemon -i 1 -K d
ajh@ANTONIO-ACER:~$ killall syndaemon
syndaemon: proceso no encontrado
ajh@ANTONIO-ACER:~$ syndaemon -i 1 -K -d
ajh@ANTONIO-ACER:~$ killall syndaemon
syndaemon: proceso no encontrado

(Note: "Proceso no encontrado" is "process not found" in Spanish).

Solution 1:

First entirely undo the current setting: Remove the tick for Disable touchpad while typing in Mouse & Touchpad settings.

Now search for and open Startup Applications from the Dash. Click Add.

Name: Syndaemon

Command: syndaemon -i 1.0 -K -R -t

Comment: Disable touchpad while typing, with a reasonable delay and only for tapping and scrolling

The -i 1.0 parameter sets the idle time of the keyboard to 1s. -K option ignores the Modifier keys. -R option uses the XRecord extension for detecting keyboard activity instead of polling the keyboard state. -t option disables tapping and scrolling but not mouse movements.

Click Add and then Close.

Reboot your computer.

Note: this is a user preference, so repeat this in every user account.

Solution 2:

Open a terminal window and run:

gsettings get org.gnome.settings-daemon.peripherals.touchpad disable-while-typing

It should output:

true

If it doesn't, run:

gsettings set org.gnome.settings-daemon.peripherals.touchpad disable-while-typing true

Alternatively, you can install dconf editor:

sudo apt-get install dconf-editor

Open dconf-editor and browse to "org" > "gnome" > "settings-deamon" > "peripherals" > "touchpad", and tick "disable-while-typing":